Registered Gas Engineer - Sep/Oct 2025

Gas safety is everyone’s responsibility

Illegal gas work:

What does Gas Safe do when you report? PLUS illegal gas fitters prosecuted

Technical:

Boilers in bedrooms, mobile cabinet heaters PLUS Hydrogen update

Editor’s comment

Busy, aren’t we? Not just in a work sense – although it does still seem that the demand for good-quality gas engineers remains high – but also in our own lives.

Whether it’s keeping up with our own lives outside work or helping friends and family, there are lots of demands on our skills, knowledge or even our little black book of recommended people.

This Gas Safety Week (8-14 September), Gas Safe Register is focusing on the “sandwich generation” –people who may be supporting or advising their children in their first homes while also taking on responsibility for ageing parents. And let’s not forget the circle of friends and neighbours who might just be looking for a bit of advice.

Ensuring consumers know what to do (and what not to do) when it comes to gas is second nature to gas engineers. But raising general levels of awareness every year is a key part of Gas Safety Week and it’s why the Register is always so delighted by the levels of support right across industry.

So yes, we’re all busy, but this kind of campaign is the best kind of busy and we look forward to seeing you join in. Don’t forget to let us know how you’re supporting so that we can include you in Registered Gas Engineer’s activities round-up in the next edition – and stay up to date with week’s daily themes on Gas Safe Register’s social channels too.

Scott Darroch, managing editor

07 Gas Safe Register Update

Gas Safety Week is here! Read what this year’s campaign is all about

Gas Safe Register, PO Box 631, DARLINGTON, DL1 9GD

Email: enquiries@gassaferegister.co.uk, register@gassaferegister. co.uk or technical@gassaferegister.co.uk

Managing editor: Scott Darroch, scott.darroch@tmwunlimited.com

News editor: Sue Harker, suzanne.harker@tmwunlimited.com

Features editor: Nicki Shearer, editorial@registeredgasengineer.co.uk

Publisher: publisher@registeredgasengineer.co.uk

Technical consultants: Rob Walkerdine, Jonathan Palmer, Jonathan Marshall

Advertising enquiries only: Mike Allen, mike@360publishing.co.uk Tel: 07917 588511; Ian Tournes, ian@360publishing.co.uk Tel: 07814 970732

Registered Gas Engineer is produced on behalf of Gas Safe Register. Gas Safe Register, PO Box 631, DARLINGTON, DL1 9GD

CIRCULATION: Jan-Dec 2024 77,432

The views expressed in this magazine are not necessarily those of Gas Safe Register. The publishers will accept an advertisement or other inserted material only on the condition that the advertiser warrants that such advertisement does not in any way infringe copyright or contravene the provisions of the Trade Descriptions Act. All copy is subject to the approval of the publisher, who reserves the right to refuse, amend, withdraw or otherwise deal with advertisements submitted to it at its absolute discretion and without explanation. All advertisements must comply with the British Code of Advertising Practice. ABC membership approved 19 March, 2009.

10 Gas Safe Register Update

Illegal gas work: what does Gas Safe Register do when you report it?

11

Prosecutions

Rogue gas fitters brought to justice

14 The good, the bad and the ugly

Why soft skills and communication can be as important as working competently; Annual boiler servicing is also an opportunity to increase heating system efficiency; The role of system cleaning in keeping down fuel bills; Maximising hot water supply without a cylinder

Edition 4: Installation pipework on industrial and commercial premises

IGEM/G/11 Edition 2 with amendments July 2022, June 2024 and July 2025

Gas industry unsafe situations procedure (GIUSP)

in bathrooms Open-flued appliances in bedrooms and rules that must be followed

Steps to take and guidance should you encounter LPG cabinet heaters

for concession to manufacturer’s instructions

update

from the Register

Are you supporting the 15th Gas Safety Week?

This year’s Gas Safety Week takes place on 8-14 September. Celebrating its 15th anniversary, the week sees the industry come together to raise awareness of gas safety and encourage the public to book their annual gas safety check with a Gas Safe registered engineer.

The theme for this year, “Looking after your home, friends, and family”, looks to emphasise that everyone has a role in keeping the nation gas safe and that we can all make a difference, whatever our responsibilities.

A reception for Gas Safety Week (GSW) will be hosted, at the Houses of Parliament by Paul Davis, MP for Colne Valley, and Chair of the AllParty Parliamentary Carbon Monoxide Group.

Welcoming gas safety champions, the reception will have speakers talking about gas safety and carbon monoxide awareness, as well as how vital Gas Safe registered engineers are in keeping the public Gas Safe.

This year’s campaign aims to raise awareness that no one should ever attempt DIY on gas and challenges the assumption,

from some members of public, that they think they can DIY when in reality they may not have the necessary skills and should only use a Gas Safe registered engineer. The priority should always be gas safety and the importance of properly maintained gas appliances.

Thousands of organisations and individuals will be promoting Gas Safety Week and raising national awareness of gas safety. Will you be one of them?

The free GSW toolkit has everything you will need to support the week, featuring social media assets, in English

and Welsh, alongside a social media schedule — including a post for each day of the week — images, articles and blogs, printable leaflets and posters, shareable factsheets showing gas safety knowledge and a press release kit with guidance on how to work with your local media for community outreach. These resources and more are available to download at: bit.ly/GSWToolkit

You can find more information on Gas Safety Week at: GasSafetyWeek.co.uk

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update from the Register

Coming soon: digital licence cards, self-booking inspections and new payment option

Digital licence cards

Coming soon are digital licence cards, a secure and convenient alternative to the physical card. Your card can be stored in the digital wallet on your phone and will display all the essential information on the physical version, including:

• Licence card number

• Registration number

• Engineer name and photo

• Start and expiry dates

• A unique QR code.

When you show your digital licence card to your customer, they can scan the QR code with the camera on their phone, which will direct them to a dedicated page on the Gas Safe Register website. This page will confirm your registration status and the types of gas work you’re qualified to undertake.

Note: Business logos will appear only on physical cards.

How it will work

After the digital licence cards

At a glance

Over the coming months, Gas Safe Register will be introducing some updates designed to improve efficiency and modernise how it supports registered engineers and businesses. Look for changes including new digital licence cards, a self-booking system for inspections and additional online payment options.

launch, when you renew, order a replacement card or add a new engineer, all engineers will automatically receive both a digital and a physical licence card. Later, the business will be able to choose from the following options:

1 Both digital and physical cards (default)

Engineers will receive both versions. A fee will apply for the physical card.

2 Digital card only Included in the registration and operative fee. The card will be emailed to the engineer (or to the responsible person if no engineer email is provided) with instructions for adding it to your mobile

wallet. It will also be available for download in the “My Account” section of Gas Safe Register’s website.

3 Physical card only

A physical card will be issued at an additional cost. Where a business logo has been provided, this will continue to be printed on the card.

Self-booking inspections

Gas Safe Register is trialling a new self-booking system for inspections, giving selected businesses the option to choose their own inspection date and time.

If you’re eligible, you’ll receive an email invitation to log in to your account and book

your inspection. Once logged in, you’ll be asked to provide the full address of the inspection site. Based on the postcode, you’ll be offered a list of available dates and times. When you’ve chosen your slot, you’ll receive a confirmation email.

Note: Availability is dependent on inspector coverage in your area.

New online payment options To make online payments even easier, the Register will soon be introducing Apple Pay as an additional payment method. This option will offer a faster, more secure way to make payments.

Stay informed

Gas Safe Register will keep you updated as these changes roll out. Look out for further articles and emails with more details and guidance.

Gas Safe Register wants to hear from you and others in the gas industry about your experience of working in the sector over the past 10 years. The Register will be working with professional services provider Gemserv to

understand your opinions and experiences to create a Decade Review – and your voice will be hugely valuable in shaping the findings.

The Decade Review will be an independent record of how the UK’s gas industry has

changed and advanced during the past 10 years. It will also look at the challenges ahead, all from the perspective of those who work within it.

The previous Decade Review was published in

2017 and you can read it at: https://tinyurl.com/4nzjxsrt

Please complete the survey by 3 October 2025 at: https:// tinyurl.com/3dsnv4ht

update from the Register

Illegal gas work: What does Gas Safe Register do with reports?

Illegal gas work is work within the scope of the Gas Safety (Installation and Use) Regulations 1998 that has been carried out by someone who is not appropriately registered or does not hold the appropriate ACS qualifications.

Gas Safe Register receives reports of illegal gas work from members of the public, gas engineers and third parties such as Environmental Health and Trading Standards. These reports are passed to the dedicated Investigations Team for investigation, in line with their remit.

Where possible, a regional investigations officer will attend the site address within 10 working days.

Note: Gas Safe Register does not have rights of access and can only attend a property with permission of a property owner, occupier or appropriate enforcement body.

The regional investigations officer will usually attend site for up to three hours, carrying out gas safety checks on the meter, appliances and associated pipework. They will also ask the customer questions about the work that was carried out.

Following the inspection, an evidence-based technical report is created and issued within 10 working days. This report is shared with the customer and HSE, as the enforcement body for unregistered gas work.

In some cases, the report may also be shared with other bodies such as Trading Standards or Environmental Health.

After the inspection has been undertaken, Gas Safe Register will continue to support HSE enforcement by providing witness statements and attending courts where applicable.

Working out of scope

In some cases, Gas Safe Register will receive evidence that a Gas Safe registered business or engineer may be undertaking illegal gas work. For example, an engineer may be working out of scope of their qualifications or using unregistered operatives.

Gas Safe Register will fully investigate these concerns in line with the Rules of Registration and Sanctions policies. Appropriate sanctions may be applied at the discretion of Gas Safe Register where there is evidence that the registered business or engineer has breached the Rules of Registration.

Gas Safe Register understands that engineers want to know the outcome of any investigation that results from work they have reported. However, the Register is unable to advise you about any follow-up action taken unless you are the owner or occupier of the site address. However, please be assured that action is being taken following your report. ■

If you find work that you think may have been carried out illegally, you can report it by filling in the “Report Illegal Gas Workers” form located in the engineers’ section of the Gas Safe Register website at: https:// www.gassaferegister.co.uk/gas-safety/ concerns-reporting-illegal-gas-work/

Alternatively, you can call on 0800 408 5577 or report concerns by email at: nonreg@gassaferegister.co.uk

We appreciate your continued support when it comes to reporting illegal gas work. If you have any questions or concerns relating to unregistered work, please do not hesitate to contact Gas Safe Register.

update from

the Register

An illegal gas fitter from Norfolk has been jailed after carrying out unsafe gas work at a residential property.

Great Yarmouth Magistrates’ Court heard that Antony Clifton, from Wymondham, had been suspended from the Register but carried out unsafe gas work while falsely claiming to be Gas Safe registered. At the property in Drayton, Norwich, there was a gas escape on the inlet to a cooker that he had fitted the day before.

The HSE investigation found that Mr Clifton, 52, had left the appliance leaking gas and emergency repair work was required. Clifton had

Nottingham builder spared jail after explosion Rogue fitter jailed after leaving gas escape

A Nottingham builder has been given a suspended prison sentence after his failures resulted in a gas explosion. The explosion in 2022 left a worker with burns so serious that he has been unable to work since.

Nottingham Magistrates’ Court heard that sole trader Barry Newman of Foster Brother Builders, from Nottingham, had contracted a man to carry out refurbishment on a property in Bulwell. As part of those works, Mr Newman had placed a faulty portable space heater connected to a propane gas cylinder in the property’s cellar

previously been served with a Prohibition Notice by HSE following unsafe gas work.

Antony Clifton, a director of CS Appliance Repairs Limited, pleaded guilty to breaching Regulations 3(7) and 5(3) of the Gas Safety (Installation and Use) Regulations 1998. He was sentenced to 46 weeks in prison and ordered to pay £1,000 in costs.

After the hearing, HSE inspector Martyn Webb said: “Antony Clifton knew that he was not registered and should not carry out any gas work. However, he showed a blatant disregard to this fact and his illegal actions meant the people living in that house could have been killed.”

to dry out damp.

On 22 November 2022, a gas leak from the heater resulted in a violent explosion, causing the 51-year-old worker severe burn injuries to his hands, legs, face and scalp. Footage taken by a member of the public in the immediate aftermath shows the extent of the damage caused to the property, with explosion debris being propelled on to the pavement and residential road, also putting members of the public at risk.

HSE’s investigation found that Mr Newman had not carried out a risk assessment. Nor had he provided suitable

and adequately maintained equipment for the work being undertaken.

The manufacturer’s instructions for the type of heater used clearly state that it is only for use in well-ventilated areas and that LPG cylinders should not be kept below ground. This is because LPG is heavier than air and will collect at low levels if there is a leak.

Barry Newman of The Quay, Beeston Marina, Nottingham pleaded guilty to breaching Regulation 4(3) of the Provision and Use of Work Equipment Regulations 1998. He was sentenced to 12 months’ imprisonment, suspended for

two years, ordered to complete 240 hours of unpaid work in the community, and required to pay costs of £2,000.

HSE inspector Roy Poulter said: “This gas explosion has left one man unable to work due to the seriousness of the injuries sustained and it could have easily resulted in someone losing their life.

“This case should serve as a strong reminder to those in the building trade of the dangers of working with gas and the need to assess the risk, and just how seriously both HSE and the courts take failures like this.”

Government must do more on illegal gas work, says ATAG

ATAG Heating Technology is calling on MPs to enforce tighter restrictions on who can purchase gas boilers. The call comes amid new findings from the manufacturer that reveal the widespread impact of illegal gas work.

A nationwide survey1 of registered gas engineers, carried out by ATAG, found that more than 82% are forced to put right unsafe installations by illegal fitters at least once every quarter. More than half warned that the faulty work poses a serious risk of carbon monoxide poisoning.

One in five installers say illegal gas work is directly harming their business, from lost contracts and reputational damage to time and money spent rectifying botched jobs.

The survey highlights concerns not just about customer safety, but about cost: one-third of gas engineers say customers typically pay more than £400 to repair these

individuals to provide services without scrutiny.

The survey found that 61% of respondents say the most effective way to prevent this dangerous practice is to prohibit boiler sales to anyone who is not Gas Safe registered. ATAG Heating Technology has long maintained a strict policy of only selling boilers to Gas Safe registered engineers and is now urging the wider industry to adopt the same approach. It’s asking tradespeople and members of the public to sign a letter to MPs that calls for legislation to restrict boiler sales to Gas Safe registered engineers only.

Kevin Treanor, director of ATAG Heating Technology UK, said: “Illegal gas work poses a serious threat to our profession, but more than that, it endangers the lives of UK residents.

“Every year, around 250,000 gas jobs are carried out by unqualified individuals,

“Nearly half of illegal gas work is promoted via social media ads.”

dangerous installations.

The figures suggest that a major source of this problem is the lack of oversight. Nearly half (45%) of illegal gas work is promoted via social media ads, making it easier for unqualified

and we need to work to bring that number to zero.

“Our engineers routinely uncover dangerously installed systems that could lead to carbon monoxide poisoning, fires or even explosions.

“The fact that over half of

installers are never asked to show ID when attending a job shows just how vulnerable the current system is. We urgently need tougher safeguards to protect the public and uphold professional standards.”

ATAG is inviting gas engineers and members of the public to write to their MP in support of new legislation that would restrict access to gas-critical products and reduce the volume of illegal installations. ■

You can email your MP via the ATAG website at: https://www.atagheating. co.uk/help-us-stop-allillegal-gas-work-in-the-uk

1 Research was carried out between May and June 2025, and was conducted on ATAG Selected Partners (Installers), with 174 respondents.

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thegoodthebad&theugly

Send us your pictures Registered Gas Engineer wants to see your pictures – whether you’ve come across some horrors or instances of really good work. Please email your stories and pictures to editorial@registeredgasengineer.co.uk or via Twitter to @RGEMag

FROM BRIAN PENNY

Brian enjoyed the LPG focus in our last issue and wanted to share some of the recent horrors that he’s seen in his work, all in the space of a week. He reckons they’re the worst any engineer has seen – unless you know different, of course.

Fryers and gas cylinders not correctly separated

Cracked, leaking fitting

No Fulham nozzle adaptor

Fryers producing excessive amounts of carbon monoxide

Gas cylinder with no safety devices serving a griddle, inside a gazebo

Bypassed safety control

A regulator capable of a maximum of 2 bar being fed directly from gas bottles with pressure at 6-9 bar

Damaged hose

FROM GASTRAX

Chris was going to carry out a gas safety check only to find that the wall had recently had external wall insulation added, almost completely covering the air inlet part of the flue. Chris removed the flue and replaced with a correctly sized one, resealed and tested.

FROM STEPHEN HITCHENS

The importance of regular maintenance and servicing became apparent when Stephen attended to water leaking from a boiler. The boiler was irreparable and has been replaced.

FROM TOM WARING

Tom found a do-ityourself solution for a flue gas analyser test point. The boiler was isolated and warning notice issued.

FROM NICK FARRANT

FROM JAMES WEBB

This flue terminal wasn’t the correct one for the boiler. On further inspection, James also saw that parts of the existing flue had been connected to the new one in order to gain the required length. The correct sized manufacturer’s flue has since been fitted.

FROM EDDIE YEANDLE

When Eddie was carrying out a tightness test, he discovered expanding foam had blocked the meter box door and it was also preventing the ECV from being accessed and operated. The expanding foam has been removed.

The condense outlet pipe had been disconnected and a solid plug fitted in its place in this commercial plant room. Nick installed the correct fitting and reconnected to a drain.

IGEM/UP/2 Edition 4: Installation pipework on industrial and commercial premises

Date issued: 8 July 2025

This Industry Standard Update provides an overview of the key areas of change arising from the revision of IGEM/UP/2 Edition 4: Installation pipework on industrial and commercial premises.

Introduction

In July 2025, an updated version of IGEM/UP/2 Edition 41 Installation pipework on industrial and commercial premises Communication 1893 was released. This revised procedure supersedes the IGEM/UP/2 Edition 32 Installation pipework on industrial and commercial premises Communication 1771, which has been withdrawn.

The revision to this standard comes into effect immediately.

Scope

This standard has been updated to include Dangerous Substances and Explosive Atmospheres Regulations (DSEAR)3 requirements, safe working practices and relevant updates to working procedures and standards in industrial and commercial premises.

The following is a brief overview of the amendments made in the update to IGEM/UP/2.

DSEAR

One of the main inclusions has been to embed DSEAR throughout the standard. There are many references to DSEAR, which provide guidance in relation to protection against the risks of fire, explosion and other similar events, with regard to dangerous substances used or found within the workplace.

DSEAR requirements throughout the standard reference Appendix 9, IGE/ SR/25 Hazardous area classification of Natural Gas installations4, IGEM/ UP/16 Design for natural gas installations on industrial and commercial premises with respect to DSEAR5 and IGEM/GM/7b Hazardous area

classification for gas metering equipment6 to carry out a risk assessment to determine hazardous areas.

Section 10 has an opening statement with a distinct focus on DSEAR, primarily due to the section being the installation of pipework in ducts, voids and enclosures internal and external to buildings.

Notable updates

Section 4.23 has been amended to cover the lower operating pressure (LOP) to the reduced value of 18 mbar: this also influences the pressure drop figure (Pmin) now being 17 mbar.

Another inclusion is within Section 4.2.6. This now provides an easy-to-reference flowchart to determine pressure regulating and controls systems. This algorithm provides clarity on the number of safety devices required to prevent over-pressuring systems.

Further on in Section 4.2.8, the requirement for correctly positioned and sized test and purge points is included. Table 4 provides the correct sizing of purge points as per the requirement to permit a minimum flow rate. These points will also provide the ability to correctly decommission pipework. Extra information on location of all test/purge points has been added to the document.

There is also a change in this section which now prohibits the practice of drilling and tapping test points into the side wall of pipework, as this practice is no longer deemed appropriate. Any test point must now be installed into an appropriate fitting.

With the ever-increasing use of press-fit systems, there has been added direction in Section 6.7 covering the use of pressfit. This includes pressure limits for internal and external use, inspection, maintenance and hotworks within the proximity of fittings.

Pliable corrugated (stainless steel) tube also has become increasingly common, and Section 6.8 has added information with regard to the use of tubing and associated hazards.

In Section 7.8, the focus is electrical safety, with numerous requirements for labelling and safe isolation. Additionally, there are also requirements with regard to bonding, including sizing, positioning and labelling.

For Zone 2NE installations covered in Appendix 9.3.8, measurements have been reduced from 1.0m to 0.5m for installations not exceeding 2 bar, with further guidance provided in Table 33 – Zone 2NE Minimum Natural Ventilation Requirements for Pipework.

Appendix 16 includes an updated commissioning form with the correct terminology used within the standard.

There are numerous instances within the standard where the use of ‘should’ has now been superseded to state ‘shall’, which now gives a further requirement to carry out work without deviation.

Notably, the document has now become easier to reference with regard to listing requirements: whereas the listing requirements were previous included within text, they are now mainly provided in a bullet point list format.

Summary

This Industry Standard Update is an overview of the information contained in the amended Standard. Gas Safe Registered engineers/businesses should be aware that they have a responsibility to ensure that they are fully apprised of all the requirements of the whole published Standard and their practical application. IGEM/UP/2 can be purchased at: https://www.igem.org. uk/resource/igem-up2-edition-3-installationpipework-onindustrial-and-co.html

Bibliography (1)IGEM/UP/2 Edition 4

Installation pipework on industrial and commercial premises

(2)IGEM/UP/2 Edition 3

Installation pipework on industrial and commercial premises

(3)Dangerous Substances and Explosive Atmospheres Regulations (DSEAR)

(4)IGE/SR/25 Hazardous area classification of Natural Gas installations

(5)GEM/UP/16 Design for Natural Gas installations on industrial and commercial premises with respect to DSEAR

(6)GEM/GM/7b Hazardous area classification for gas metering equipment

Industry Standard Update 130

IGEM/G/11 Edition 2 with amendments July 2022, June 2024 and July 2025 - Gas industry unsafe situations procedure (GIUSP)

Date issued: 21 July 2025

This Industry Standard Update provides an overview of the key areas of change arising from the revision of IGEM/G/11 Ed 2 with amendments (July 2022, June 2024 and July 2025) Gas industry unsafe situations procedure.

Introduction

In July 2025 an updated version of IGEM/G/11 Edition 2 with amendments July 2022, June 2024 and July 2025 Gas industry unsafe situations procedure1 (GIUSP) communication 1904, was released. This revised procedure supersedes the IGEM/G/11 Edition 2 with amendments July 2022 and June 2024 Gas industry unsafe situations procedure2 communication 1887, which has been withdrawn.

The revision to this standard comes into effect immediately.

Scope

The guidance in this standard is relevant to all competent engineers and is based on the assessed risk when they encounter situations that have a potential or an immediate effect on safety. The priority for gas engineers when dealing an unsafe situation is to safeguard life and property.

The standard covers all commissioned gas installations, equipment and appliances installed in all domestic and non-domestic premises.

The following is a brief overview of the amendments made in the update to IGEM/G/11 GIUSP.

Main document

There have been minor amendments to the latest edition of the GIUSP. Section 3.3.2 has a change of wording regarding equipotential bonding, previously stating where non-metallic services enter a building. The wording has now been changed to where non-metallic services supply a building.

An adjustment to Figure 1 – GIUSP appliance/installation risk classification process in Section 5.3 adds more definition to the “At Risk” pathway, now including the word “reduce” in the option for turning off the appliance/ installation box to give additional clarity to engineers when factoring their decisionmaking and risk assessment.

Section 9 Table 1

Table 1 gives examples of unsafe situations. However, the list is not exhaustive and engineers shall use their engineering judgement if their situation differs from Table 1. There have been numerous changes to Table 1 in this update, which mainly surround updating the wording used to harmonise the document.

Scenario 2.9 has removed reference to Technical

Bulletin (TB) 003 Built-over unprotected polyethylene (PE) low and medium pressure natural gas service – Safety concern3, which has now been removed. This is due to additional information being included in Section 3.10 regarding built-over PE service pipework. Added guidance is now given in Situation 2 for pressures exceeding 75mbar and the reference to buildings over 18m high removed.

There have been a number of changes in Section 4 of Table 1 (Air supply (Ventilation)), which now uses harmonised language when describing a situation where purposeprovided ventilation is required but not provided.

The guidance notes for RIDDOR reporting (section 8) and the flowchart in Appendix 7 have now been removed from Scenario 7.3 with respect to appliances not suitable for use with the gas being supplied.

Summary

This Industry Standard Update is an overview of the information contained in the amended standard. Gas Safe registered engineers/businesses should be aware that they have a responsibility to ensure that they are fully apprised of all the requirements of the whole published standard and their practical application. The latest version of IGEM/G/11(1) can be downloaded free of charge by visiting the IGEM website at https://www.igem.org. uk/resource/igem-g-11edition-2-gas-industryunsafe-situationsprocedure.html

Bibliography

(1)IGEM/G/11 Ed 2 Gas Industry Unsafe Situations Procedure with amendments July 2022, June 2024 and July 2025 (Communication 1904)

(2)IGEM/G/11 Ed 2 Gas Industry Unsafe Situations Procedure with amendments July 2022 and June 2024 (Communication 1887)

(3)Technical Bulletin 003 – Built-over unprotected polyethylene (PE) low and medium pressure natural gas services – Safety concern

Open-flued appliances in bedrooms

Gas Safe Register’s Technical Team look at the rules that must be followed when an open-flued appliance is fitted in a bedroom

The Gas Safe technical team are often asked whether an open-flued appliance may be installed in a room used as a bedroom or sleeping accommodation. The answer is yes but only when set parameters are met.

A non-room sealed appliance fitted in a room used as a bedroom must not have a heat input greater than 14kW gross (12.7kW net). It must also be fitted with a safety control that shuts down the appliance before there is a build-up of a dangerous quantity of products of combustion in the room.

The regulations also extend to rooms that are used as a temporary sleeping accommodation, where it is known that the room is intended to be converted for such use, including bed-sitting rooms and the sleeping areas of caravans.

Guidance given in the Unsafe Situations Procedure, IGEM/G/11 states that an appliance of this nature over the prescribed 14kW gross input and not fitted with a builtin atmospheric sensing device falls into the At Risk category, subject to appropriate tests and risk assessment.

Additional consideration should be given to the appliance surroundings: for example, beds, bedding and curtains, as well as people with medical needs who use apparatus such as oxygen cylinders. Considerations for ventilation should also be given to any cupboards or compartments where a non room-sealed appliance is installed or where the appliance takes its ventilation from within a bedroom/bathroom. These are for any newly installed/ replacement appliances that have a heat input greater than 14kW gross (12.7kW net).

Table 1: Implementation dates of geographical regulations

Safety controls

An atmospheric sensing device, sometimes called an oxy-pilot oxygen depletion system, is a sealed unit that cannot be stripped down. Some devices may contain a gauze filter to prevent a build-up of lint entering the primary air intake on the pilot assembly. If the device fails, then the unit needs to be replaced.

The safety control is designed so that if the air becomes contaminated, the pilot flame will lift away from the thermocouple tip, causing the thermo-electric gas valve to shut down and close. This happens when the oxygen level decreases by 2%, CO2 levels increase by 2% or the CO levels reach 200ppm.

Frequently asked questions

The following are some common questions that the Technical Team are asked about open-flued appliances in bedrooms:

Q. A customer in a rented accommodation has temporarily moved a bed into a room containing an open-flued appliance, outside of the permitted regulations. What action must I take?

A. A temporary change of the use of the room is not recognised in the regulations. Therefore, any gas appliance that doesn’t comply with the requirements must be:

• replaced with an appliance that meets the minimum requirements

• classified as per the GIUSP, turned off with the gas user’s permission until the appliance is either replaced or until the room is no longer used for that purpose. Consideration should be given to re-housing the tenant into other suitable accommodation.

In owner-occupied properties, there is no legislation to prevent private

householders from using a room as a bedroom where appliance(s) that do not meet regulations are already installed. Where this is encountered, the appliance should still be classified as At Risk, turned off with the customer’s permission, and the appropriate labels and paperwork issued.

Q. Can gas fires be installed in bedrooms?

A. A gas fire can be installed in a bedroom if the criteria are met:

• A heat input no greater than 14W gross input (12.7kW net)

• It is fitted with an atmospheric sensing device Consult the manufacturer’s instructions to confirm that they would allow installation.

Q Can an open-flued appliance fitted inside a cupboard accessed from a landing/hallway take its ventilation in series through a bedroom?

A. No. The appliance cannot take ventilation through such a room. Also, an air vent must not communicate with a room containing a bath or shower.

Q Is a CO alarm required for open flued appliances in bedrooms?

A It is always good practice to install a CO alarm in any room where there is a fixed-combustion appliance (excluding gas cookers). There may be a mandatory requirement, subject to geographical location, and it will vary depending on whether the property is rented or privately owned and if the appliance is a new installation/replacement or existing. We would advise that you check the specific Building Regulations for the relevant UK nation. Alarms should be positioned in line with the guidance from current regulations and manufacturer’s instructions. ■

Showing both suitable and unsuitable routes for combustion air provision.

Source: Technical Bulletin 105

Bibliography

• Gas Safety (Installation and Use) Regulations 1998 as amended (GSIUR)

• IGEM/G/11 Edition

2 Gas Industry Unsafe Situations Procedure (with amendments July 2022 and June 2024) (GIUSP)

• Technical Bulletin (TB)105: Non-roomsealed gas appliances located in sleeping accommodation.

Bibliography

1. IGEM/G/11

Edition 2 with amendments July 2022 and June 2024 Gas industry unsafe situations procedure

2. BS 5440-2:2023

Chimneys, flue pipes and ventilation for gas appliances of rated input not exceeding 70KW net (1st, 2nd and 3rd family gases) Part 2: Installation and maintenance of ventilation provision for gas appliances –Specification

3. Liquid Gas UK Guidance Note

GN2:2002 A guide for Cabinet Heater

4. Liquid Gas UK Consumer Guidance Sheet 01: Mobile bottled gas heaters and condensation

Mobile LPG cabinet heaters

LPG

Mobile cabinet heaters do not come within the scope of the GSIUR but there are steps you should take if you

encounter them during your work. Here, Gas Safe Register’s Technical team set out some guidance.

LPG mobile cabinet heaters are individual units that can be moved from room to room whenever required. They can be used as a primary or a secondary heat source and incorporate their own LPG cylinder/gas bottle, usually within the appliance casing.

Visual inspection

They come in different types such as radiant, plaque, and more recently, living flame options.

Because they generally fall out of the scope of the Gas Safety (Installation and Use) Regulations (GSIUR), Gas Safe Register’s remit only covers them when they are

used for hire or reward or owned by a landlord in rented accommodation. But regardless of whether in scope or not, if you find one on site, you must visually inspect it to ensure it is in a safe condition, just as with any other gas appliance.

Table 3 of IGEM/G/11 Gas industry unsafe situations procedure1, gives the following guidance on the minimum requirements of a visual inspection:

Checks required

An appliance is encountered whilst working on another appliance

An appliance forming part of a tightness test

An appliance, when purging the system of air and relighting, following work elsewhere on the installation

Table 3: Minimum visual checks to ensure compliance

Consideration of the visual inspection should include, but not be limited to:

Ventilation

Always: Ensure that the room is well ventilated, ensuring that an adequate supply of fresh air is available to ensure the correct operation of the appliance. Ventilation requirements can often be found in the manufacturer’s instructions, which you should consult where available.

Room size requirements: Manufacturers’ instructions or the appliance’s data badge may give a minimum room size for the appliance. Where these aren’t available, guidance is given in Table 4 of BS 5440-2+A1:20072

Gas supply: The gas supply for the cabinet heater will be fed by an LPG cylinder contained inside the body of the heater. This will be connected via a regulator and hose to the gas valve. The hose should be checked for its condition and age: these hoses should generally be replaced every five years unless the manufacturer’s instructions state otherwise.

Appliance: Check the appliance to ensure that the fireguard is fitted correctly and that the face panel mesh is firmly attached and not damaged. Ensure that there are no visible cracks in the plaque or ceramic burners. Also confirm that the appliance is stable.

Safety tips

Space heaters conforming to BS EN 449:2002+A1:2007 in room

50 W/m3 of heated space >15

Space heaters conforming to BS EN 449:2002+A1:2007 in an internal space

Signs of distress: Examine for signs of incomplete combustion on and around the appliance, such as soot and/or staining. The castors and door catches should be inspected for damage and or if they are missing. Excess moisture and condensation on the walls and windows during appliance use may indicate poor ventilation.

Location: Mobile cabinet heaters must not be used in locations such as bathrooms and shower rooms.

They shall not be used in places where highly flammable materials are used or stored.

They also should not be used in sleeping accommodation such as bedrooms or tents, etc, or in any room smaller than the size specified in the manufacturer’s instructions.

• Recommend that the gas appliance should be used in conjunction with a suitably positioned CO alarm in each room where a mobile cabinet heater is used.

• Always ensure that the room is well ventilated. If the room becomes stuffy, then immediately increase the ventilation by opening a window.

• Issues with condensation can also become a factor in an inadequately ventilated space. See Liquid Gas UK Consumer Guidance Sheet 01 for more details.

100 W/m3 of heated space >15

25 cm2/kW with a minimum of 50 cm2 at high and low level

25 cm2/kW with a minimum of 50 cm2 at high and low level

Yes

Yes

“The relevant ACS competency for working on mobile cabinet heaters is CABLP1.”

General information

These appliances are generally fitted with thermocouple-type flame supervision devices to safeguard against unburnt gas escaping into the room in the event of the flame blowing out.

Most modern appliances are also supplied with oxygen depletion sensors, which automatically turn off the appliance if the oxygen level drops to a dangerous level.

Servicing guidance can be found Liquid Gas UK Guidance

Note GN2:2002 A guide for Cabinet Heater Servicing3

Customer advice

Always advise the customer that is it important to have the appliance serviced regularly by a competent engineer and in line with the manufacturer’s instructions.

If the heater is used in a multi occupancy building or any rented accommodation, advise the tenant to check their tenancy or building management agreement for any restrictions that may prohibit their use. ■

• Always follow the manufacturer’s guidance with regard to general usage.

• Avoid using the heater in the proximity of flammable materials and avoid placing items of clothing over the heater.

• Before going to bed, leaving the property or moving the appliance to a different location, always ensure that the appliance is turned off.

• Never use the heater in a room containing a bath or shower.

You can find more information about Gas Safe Register’s policies at: www. GasSafeRegister.co.uk/ about-us/our-policies

Request for concession to manufacturer’s instructions

It’s not always easy to balance the appliance manufacturer’s installation instructions with your customers’ requirements. Factors such as the constraints of the property and the intended appliance location can cause some difficulties.

But it’s important to remember that the most important requirement is to ensure that the appliance is safe and complies with the Gas Safety (Installation and Use) Regulations. You must ensure that the specific installation requirements of the manufacturer are met. Carry out a survey of the intended location of the appliance and its instructions before starting work, to ensure that the installation will comply with the relevant regulations.

What if I cannot meet all the requirements as specified?

Gas Safe Register recognises that there are sometimes unique circumstances where the only available location for the appliance is one that will not comply fully with the manufacturer’s installation instructions. As a Gas Safe engineer, you must seek the advice and approval of the

appliance manufacturer to ensure that any intended deviation from its instructions will not reduce safety before undertaking any gas work. A formal process is available to help you provide a consistent approach for dealing with these circumstances.

The process

If your intended installation cannot fully meet the requirements of the manufacturer’s installation instructions, you must request a formal concession from the appliance or equipment manufacturer to deviate from the instructions.

To provide a consistent and robust method for this process, you can use the Request for Concession to Manufacturer’s Instructions template and follow the process in the diagram. You can download the template by signing into your online account at www.GasSafeRegister. co.uk/sign-in

Important:

This process must be used at the quotation stage, before work takes place.

“A request for concession to the manufacturer’s instructions does not detract from them.”

Manufacturer’s view and advice

The manufacturer’s installation instructions will cater adequately for most installations. This process is to cater only for those rare occasions where there is genuine ambiguity and/or extenuating circumstances:

• Any concession given by a manufacturer to its standard written instructions will relate only to the appliance, address and concession stated. It cannot be used to apply similar concessions to other work. A separate concession must be obtained for any additional site or appliance.

• Approval will not be granted without valid reason and supporting evidence. You must not circumvent the manufacturer’s instructions simply to make the job easier.

• A request for concession to the manufacturer’s instructions does not detract from them; it is aimed at helping compliance with the regulations and making sure that unfounded defects are not raised and unsafe situations logged incorrectly. Gas Safe Register will require you to show evidence of this approval process in the event that an inspection identifies appliance or equipment installation defects. Where approval of a requested concession has not been granted by the manufacturer, you will be required to correct the defect to meet the existing installation instructions, in accordance with the issued defect notice.

Customer requests a new gas installation/appliance

Gas engineer carries out pre-installation survey. They identify unique circumstances with no alternative installation option or solution that will allow full compliance with MIs

Gas engineer sources and completes Request for Concession template document from Gas Safe’s website and sends to the manufacturer’s technical team for approval

At a glance

• All gas work should be carried out competently and safely, in accordance with the relevant geographical gas safety legislation, Building Regulations, manufacturer’s instructions and appropriate industry standards.

• Deviations from the manufacturer’s instructions, normative industry standards or technical specifications or the use of ‘alternative methods’ to achieve compliance are not acceptable without documented and auditable approval from the equipment manufacturer or other relevant authority.

• It is your responsibility to provide this evidence in these circumstances. Approval for any deviation should be sought from the manufacturer or other relevant authority before any gas work is carried out.

Manufacturer assesses the Request for Concession

Manufacturer grants concession or asks the gas engineer for more information

Manufacturer grants concession Gas engineer provides more information, such as technical detail or photographs Gas engineer tells customer that concession is approved and installs and commissions appliance in accordance with the concession

Gas engineer provides their customer with a copy of the concession approval, along with all appliance instructions and completed Benchmark commissioning documents

Gas engineer sends copy of concession approval to Gas Safe Register to be added to their registration file

Gas engineer notifies the installation as compliant with Building Regulations

Manufacturer does not grant concession

New installation does not start and alternative compliant installation solution must be sought and used

For more information see Technical Bulletin 158: Requesting a Concession to Manufacturer’s Instructions, by logging in to your online account at: www. GasSafeRegister. co.uk/sign-in

Green light for Fife hydrogen trial

The first-of-its-kind green hydrogen gas network on Scotland’s east coast will see 300 homes connected to the net-zero gas. Here, SGN looks at what’s involved and what differences gas engineers and consumers will – and won’t – see.

In Levenmouth, Fife, a pioneering green hydrogen project is under way to help provide evidence in support of the government’s work. H100 Fife is leading the way in decarbonising home heating by using 100% hydrogen instead of natural gas in up to 300 homes in Buckhaven and Denbeath. The project, run by SGN, aims to connect its first home later this year.

H100 Fife is an end-to-end system, not only encompassing hydrogen production, storage and distribution but also to supply SGN consumers. The project will deliver green hydrogen into homes of participating customers for use in heating and cooking.

Case for safety

Safety is fundamental. The project has submitted a Safety Dossier to HSE. The Safety Dossier is made up of three ‘cases for safety’ covering Production & Storage, Distribution and End Use. If the HSE is satisfied that the evidence demonstrates that SGN can run the trial safely, it will write to SGN, Ofgem and the Department for Energy Security and Net Zero setting out the conclusions of its assessment. All parties will need to consider the conclusions of HSE’s assessment before the trial goes ahead.

Hydrogen, like natural gas, has no smell. To ensure it’s easily detectable, the same odorant will be used as in natural gas, so its scent will be familiar. That means the process for reporting a leak remains unchanged. If users suspect a hydrogen leak, they should call the National Gas Emergency Service on 0800 111 999, just as for a natural gas leak.

Participants will pay the same standing charge and price per kilowatt hour (kW/h) for natural gas while using hydrogen gas. SGN has been working closely behind the scenes with Xoserve and the wider gas industry to devise a billing and metering solution that ensures there is no cost disadvantage to taking part in the trial.

The project is converting participating homes to hydrogen. As part of this process, trained engineers will install new hydrogen appliances, hydrogen gas meters, gas services and any ancillary system works.

In February this year, SGN opened three hydrogen demonstration homes next to its production and storage facility at Fife Energy Park. Residents involved in the trial can now visit the demonstration homes to get hands-on experience ahead of appliances being installed in their own homes later this year.

Hydrogen engineers

To facilitate the H100 Fife trial, SGN worked with Fife College to develop the UK’s first hydrogen training facility for gas engineers. Based in the Levenmouth Campus, the new training facility opened earlier this year and will create a new net-zero workforce in Fife by upskilling more than 100 Gas Safe registered engineers to work with hydrogen gas.

SGN developed the training courses in partnership with Fife College, alongside key stakeholders such as BPEC Certification, Energy & Utility Skills Partnership and IGEM. Engineers receiving the training will be deemed competent to work on H100 Fife.

The course is set up as a Changeover of Natural Gas to Hydrogen (CONGHY) Approved Code of Practice (ACOP).

The course and assessment is being delivered by expert trainers with experience in delivering natural gas training with support from industry professionals.

This competence will enable engineers to safely install, test, commission, service and maintain the hydrogen supply system in people’s homes including the newly developed hydrogen appliances (boilers, hobs and meters).

• For more information on the project, please visit: www.h100fife.co.uk

Producing, storing and distributing hydrogen

Turbine

SGN is partnering with Offshore Renewable Energy Catapult to use its 7MW offshore wind turbine. The turbine offers an abundant source of clean electricity provided by Fife’s rich wind resources. The project will also have a backup connection from the electricity grid.

New network

Electrolyser

Electricity generated by the turbine is used to produce hydrogen at a dedicated electrolysis plant. The electrolyser separates water into its elements: hydrogen and oxygen. If the electricity used is from renewable sources, like the wind the project is using, the hydrogen produced is green hydrogen.

Green hydrogen will be delivered via a newly constructed 8.4km polyethylene (PE) gas distribution network. This will allow households to opt in for hydrogen or continue using the existing natural gas supply.

The new infrastructure is built to the same standards and uses the same materials as the current PE networks that already make up approximately 80% of Britain’s gas distribution system. This effectively validates the suitability of 80% of Great Britain’s gas network to safely transport hydrogen.

Storage vessels

Hydrogen will be stored on-site in six purpose-built vessels. SGN will store more than enough to heat all participating homes, ensuring supply won’t be disrupted during even the coldest weather.

How

to identify a hydrogen home

Hydrogen boilers, hobs and meters will be clearly identified. If you are called to a hydrogen installation in the Buckhaven & Denbeath trial area, DO NOT carry out any work. Please call SGN on 0808 175 4475 and inform the customer that a suitably competent hydrogen engineer will need to attend.

Hydrogen gas meters, like this one, will be easily identifiable and installed outdoors.

Why communication is key to gas safety

Every job is a chance to build trust and share essential safety advice. Mark Krull, director of Logic4training, shares why ‘soft skills’ can be as important as technical ability when it comes to keeping people safe.

Gas engineers are practical people with strong technical abilities, attention to detail and a problem-solving mindset. But there is another asset that is just as important: customer service and communication skills. Every visit is an opportunity not just to service appliances, but to educate, reassure and build lasting relationships with customers

The gas safety gap

One-third of homeowners say they’ve considered skipping their annual gas safety check either because of cost, lack of awareness or not fully understanding the potential dangers.

Just 58% of homes are fitted with a CO alarm, according to a survey by Firechief Global, leaving millions of households potentially exposed. This statistic highlights the vital role of clear communication when you’re out on the job.

A calm, confident explanation of hidden hazards like CO, along with the benefits of regular alarm checks, can safeguard your customers and strengthen your credibility. It’s not about scare tactics, just plain, helpful facts delivered clearly.

What are soft skills?

Technical skills are vital but communication skills are

what can turn a competent engineer into a trusted advisor. They also help build longterm relationships that lead to repeat business and word-ofmouth referrals:

• Listen: Acknowledge concerns and understand what the customer is asking, even if they are not using the right terminology, and provide a clear helpful response in everyday terms.

• Empathy: Showing an understanding of customers’ concerns goes a long way, especially around cost, safety and any previous negative experiences.

• Confidence: Talk to them in a professional and calm manner and always be clear about your responsibilities.

This assures them that they’re in safe hands and builds trust. Trust is earned through consistent actions, such as arriving on time, doing quality work and communicating with clarity and care. Combined with your technical expertise, this approach ensures that customers understand the information they need to stay gas safe.

Keeping everyone safe

Gas Safety Week is an opportunity to bring customers into the national conversation. It doesn’t need to be complicated or time-

“Communication skills are what can turn a competent engineer into a trusted advisor.”

consuming. Why not give them a leaflet or send an email that explains the importance of annual servicing and CO alarms. Following-up a visit is always a nice touch, with a quick thank you and a reminder of when the next inspection is due.

Customers trust gas engineers to keep their homes safe, but gas safety takes

more than technical proficiency and training. Strong soft skills build the relationships needed for customer trust and understanding. This year’s Gas Safety Week theme, Looking after your home, friends and family, is a reminder that everyone has a responsibility and role to play in gas safety. ■ www.logic4training.co.uk

Take practical action

Gas Safety Week is a timely reminder to keep training and skills up to date. Ongoing professional development ensures you remain up to speed with the latest safety standards, regulations and technologies -– all essential for giving customers accurate, reliable advice. Choose a quality training provider that delivers handson, in-person training as the foundation, with digital tools used to enhance (not replace) the learning experience. Make sure you check their reviews and, ideally, visit the centre before handing over any money.

Keep gas safety front and centre

Gas Safety Week highlights the commitment of gas engineers to keeping heating systems working safely, writes Martyn Bridges, director of Governmental and External Affairs at Worcester Bosch.

Gas Safety Week continues to shine a spotlight on the importance of safe gas appliance use. For gas engineers, the week provides a timely reminder of the unique position they hold.

Many homeowners stay loyal to their trusted engineer, relying on them year after year to keep their heating and cooking systems working safely and efficiently. That ongoing relationship places engineers on the front line of prevention and education.

Modern boilers have become incredibly safe. But safety doesn’t end with design: it depends on maintenance. Annual servicing is usually a requirement for the extended warranties we now see, with 10-year guarantees becoming increasingly common. Without

that regular attention, even the most advanced appliance can become vulnerable.

Changing systems, changing risks

Boiler installations are far more flexible than in the past. Flue runs can now be much longer and incorporate multiple changes in direction, which would have been impossible a generation ago. However, that flexibility brings added responsibility.

When things go wrong it’s often because of a change to the installation environment, not the appliance itself.

What to prioritise

Engineers must remain vigilant, especially with vertical flue systems that pass through roof spaces. Roof spaces often double as household storage and it’s not

“The annual service visit is an opportunity to enhance system performance, improve efficiency and reduce fuel bills.”

uncommon for flues to be knocked or obstructed by boxes and other stored items. Checking the condition and support of flue runs is essential to ensure continued safe operation.

When flue integrity has been confirmed, servicing can begin, following the manufacturer’s specific instructions. These can vary considerably, and some may call for scheduled part replacements at certain service milestones. Gaskets, seals, electrodes and similar components often have recommended lifespans, and knowing the appliance’s history can help engineers arrive with the right parts, avoiding return visits.

Beyond safety

The annual service visit is no longer just about compliance: it’s an opportunity to enhance system performance, improve efficiency and reduce fuel bills. Homeowners are increasingly open to advice on upgrades, from system flushing and magnetic filters to smarter controls and improved

components. The appetite for energy-saving solutions has grown and engineers are well placed to recommend meaningful improvements.

This shift in customer attitude is important. It means engineers can now have broader conversations about cost, performance and energy use – not just about what’s broken. It’s a chance to add value, not just ensure safety.

Gas Safety Week may only last seven days but the work of keeping homes safe continues year-round. Modern systems are safer and smarter than ever but that safety depends on engineers staying alert to the bigger picture: not just the appliance, but the full environment in which it lives.

With systems growing more complex and customers becoming more engaged, engineers have both a responsibility and an opportunity. With the right checks, tools and conversations, they remain the homeowner’s most trusted ally in staying safe, efficient and prepared for the future. ■

Raising the (water) bar

What influences low water pressure and why are bigger, multi-level buildings with multiple outlets at particular risk? Mike Oxley, training manager at Salamander Pumps, has some answers.

Water flow is the volume of water flowing from an outlet over a given time period, and pressure is the force driving it through the pipework and outlets. The flow rate is proportional to the square root of the pressure difference across the piping. This means that the greater the pressure, the higher the flow rate.

Low water pressure can be highly problematic, creating dribbling taps and

“Water demand can exceed supply capacity, usually during peak usage periods.”

showers, slow-filling baths and underperforming appliances. The type of water system often accounts for low pressure, which, according to our research, occurs daily in up to 40% of households.

Gravity-fed systems

These are commonly found in older houses and include a cold water storage tank, frequently in the roof space, and a hot water cylinder in the airing cupboard. They rely on gravity to force water around the system, with the height of the cold-water storage tank determining the pressure throughout the system.

Poor water pressure is common in gravity-fed systems, often occurring when outlets, usually showers, are located above the water

storage, so it has to go against the force of gravity. In these instances, a pump is required.

Mains fed with combi or unvented systems

These rely on the pressure of the mains water supply and water companies are required to provide an average pressure of 0.7 bar over a 24-hour period. Yet pressure often fluctuates, and a common reason is water demand exceeding supply capacity, usually during peak usage periods such as early mornings and evenings.

This can be either within a building or at street-level when multiple properties draw on the mains water supply.

An all-in-one unit combining a water storage tank and integrated pump can boost

the water pressure and flow throughout a whole building across multiple floors and outlets. A higher-pressure solution boosts water in outlets on upper floors and in properties with a large number of outlets such as houses of multiple occupancy, B&Bs, hotels, restaurants and gyms.

These types of building with mains-fed systems are particularly vulnerable because pressure drops by 0.1 bar for ever metre it travels upwards, and because they are more likely to have multiple outlets running simultaneously.

In addition, large buildings often include extensive plumbing systems with lengthy pipework and multiple turns, which cause pressure loss through friction. ■

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Connected controls for smarter home energy management

Drayton’s Merlin Milner looks at the latest smart technology trends, how smart home automation can help homeowners reduce their energy consumption and what installers need to know.

People are increasingly turning to smart technologies for better control over their energy use, security and convenience. For heating engineers, this shift is both a challenge and a significant opportunity.

According to research by Drayton, 87% of installers say the majority of their customers have an interest in adding smart technology to their home and a further 9% say this is true of almost all their customers.

At its heart is the drive to reduce energy consumption. Homeowners are seeking practical, reliable ways to manage their usage more effectively. Smart heating controls have long been at the forefront, providing room-byroom control, remote access and learning algorithms that optimise heating schedules.

But the market is expanding beyond heating and your customers want to integrate more systems into a cohesive smart ecosystem.

Wiser’s latest updates include the addition of a new Smoke Alarm, Window and Door Sensor, Water Leakage Sensor, Temperature and Humidity Sensor, Motion Sensor, Lighting Dimmer Micromodule, Shades Control Micromodule, and Power Micromodule. All of these sensors and micromodules can be managed via the Wiser Home app alongside heating control.

“87% of installers say the majority of their customers have an interest in adding smart technology to their home.”

What do they want?

In addition to smart heating controls, smart lighting (56%), smart alarms (36%), smart EV charging (31%) and sensors such as leak sensors (13%), window/door sensors (12%) and humidity sensors (11%) were all identified by homeowners.

Many of these smart devices, such as lighting, EV charging, sensors and alarms, have a key role to play in making homes more efficient, especially as the electrification of homes drives forward to create more sustainable buildings.

Smarter energy management

However, as the number of connected devices grows, so does the importance of managing them efficiently. A single, unified app that brings together these technologies provides convenience for homeowners and is pivotal in reducing energy consumption and maximising efficiency.

For example, smart sensors – such as window/door sensors or humidity sensors – can directly influence how heating systems operate. If a window is left open or humidity levels indicate excess moisture, the heating schedule can be adjusted automatically to avoid unnecessary usage.

A system that can incorporate all of this into one management

tool will offer a more responsive and tailored environment.

The opportunity

Installers are doing more than just fitting smart thermostats: they’re delivering intelligent systems that adjust in real time based on data from across the home. The ability to advise on whole-home automation, and to explain the benefits of integrated control, builds trust with customers and helps futureproof installations. This integration trend opens new avenues for growth. Those who understand how to configure and optimise multi-device smart home systems are well positioned to add value and stand out from the competition.

A greener, more intelligent future

The shift towards integrated smart homes is more than just a trend; it reflects a deeper commitment to reducing energy use and living more sustainably. By bringing together connected devices through a single app, homeowners gain greater visibility and control over their energy habits.

For installers, embracing this opportunity means not only meeting customer expectations, but becoming an essential part of the UK’s transition to smarter, greener homes. n www.draytoncontrols.co.uk

Evolution and innovation

Keeping heating system clean has become a priority to help avoid unexpected bills and further costs. Spirotech’s Pete Chamberlain looks at innovations in water treatment and why prevention is better than cure.

The number of different water treatment solutions available to heating engineers has expanded greatly over the past few decades, along with the level of education and training. It’s important that installers are aware of the different options and combinations available to prevent the presence of dirt and air and keep the system performing at its best for their customers.

The basics

Heating and cooling systems play a critical role and keeping them clean is a long-term investment. When understanding the quality of a system, installers have become familiar with carrying out a water analysis as a first port of call. Checks on pH levels help to determine the nature and cause of any problems so the correct action can be taken.

Because chemicals, minerals and nutrients dissolve in water, they can deposit on to surfaces, leading to scale formation and reducing the system’s efficiency. Additionally, air in the system can cause corrosion, which leads to the formation of magnetite. This can travel and collect around the system and cause damage to the boiler.

Evolution of deaeration

For a long time, the general belief was that an automatic air vent (AAV) would be enough to tackle the issue of air in the heating system. And although it is useful during the filling or

draining process, and the ongoing release of free air, it does little to remove invisible microbubbles.

Microbubbles are formed by an increase in temperature or a decrease in pressure, and when dissolved gases become liberated from water – similar to boiling a kettle or opening a bottle of fizzy drink. They are so small that they have a hard surface tension, meaning they cannot coalesce to form a bubble large enough to be removed by an AAV.

A deaerator can be installed on to the flow pipe to enable microbubbles to rise out of the water, before being released by an automatic valve at the top of the unit.

Dirt separation

Removing all traces and contaminants of dirt and debris is vital to keeping the system clean and avoiding radiator cold spots, noisy pipework or parts breakdown. If left untreated, the boiler will also have to work harder to deliver heat, which could lead to higher energy bills.

The problem can be remedied with a dirt separator fitted on the return to ensure that any magnetite caused by corrosion and any nonmagnetic particles are captured and removed before they recirculate around the system.

New developments

A new practice emerging in water treatment is that of demineralised water, which has had its dissolved mineral content – such as calcium, magnesium, sodium, chlorides and sulphates – removed. This is achieved through the use of resin beads. Positively and negatively charged beads attract the unwanted positive and negative ions in the water and exchange them with useful and safe ions. By conditioning the water and removing these unwanted salts and minerals, the conductivity of the water decreases and the pH value is increased. The system water is chemically ‘hungry’ and free from buffering agents, making it highly compatible with modern, closed-loop heating systems when correctly managed. Used correctly, it creates a healthier environment inside the system, reducing the risk of internal damage and helping to maintain performance over time.

In mainland Europe, demineralised water has already become the standard and the UK is beginning to follow suit, with the growing emphasis on renewable systems. ■

Maximising hot water without a cylinder

Kyle Lee, product director at Navien UK, explores how installers can meet rising hot water demands in homes, and why next-generation combis may be the key.

Long gone are the days of waiting endlessly for the shower to heat up or scheduling baths like a military operation. Families now expect instant, reliable hot water delivery that keeps pace with their lifestyles.

The boiler is vital for ensuring hot water delivery throughout the property. For some homes, only one or possibly two showers are required at a given time. However, for bigger homes with more occupants and additional bathrooms, hot water delivery must be prioritised to ensure comfort and efficiency at each outlet.

“Customers now expect instant hot water, which is reshaping how hot water systems are specified and installed.”

But with greater demands come greater challenges. It’s no secret that the average home uses more hot water than a generation ago. Rainfall showers, large bathtubs and smart control systems have made convenience and comfort the norm.

At the same time, housing density and floorplans are changing too. Open-plan

living spaces, loft conversions and side extensions are placing higher expectations on systems once designed for simpler layouts. What’s more, customers now expect instant hot water, which is reshaping how hot water systems are specified and installed.

Revolution

Conventional combi boilers have long been the go-to solution for homes without the space or budget for a separate hot water cylinder. They’re compact, easy to install and well suited to properties with relatively low or predictable hot water usage.

But in households with high simultaneous demand, combi boilers can begin to struggle. Flow rates drop, temperatures fluctuate and customer satisfaction suffers. Installers have often had to choose between oversizing a boiler (with all the inefficiencies that come with it) or recommending a system boiler with an unvented cylinder, which requires more space and longer installation times

Solution

Fortunately, innovation in boiler design is beginning to close that gap. A new generation of combi boilers are engineered specifically for high-demand homes that need excellent hot water performance without the complexity of cylinders. These

Navien’s flagship NCB700 ON is a combi boiler featuring an integrated 40-litre stainless steel thermal store. Designed for high domestic hot water (DHW) demand, it supports DHW recirculation to help reduce water wastage and provides flow rates of up to 22 litres per minute at a 35°C temperature rise.

The combi boiler delivers performance comparable to that of a system boiler with a separate cylinder but with a more compact and simplified installation.

models integrate larger stainless steel heat exchangers, preheat capabilities and, in some cases, built-in thermal stores, to deliver strong, stable hot water at flow rates previously thought impossible from a combi.

With consumer expectations higher than ever and building standards tightening year by year, it’s clear that installers need to look beyond the basic combi when specifying for high-demand homes. Whether it’s a growing family with three bathrooms, a landlord upgrading a property portfolio or a self-builder looking to minimise system complexity, high-performance combis are increasingly the right fit. ■

Legislative, Normative & Informative

The Gas Safe Register Legislation & Standards Document List

Date issued: 1 August 2025

Introduction

This document defines all documents recognised by Gas Safe Register as being Legislative, Normative (gas standards) and Informative reference documents.

Some documents may only be available as hard copy documents but the majority are available to download, either via Gas Safe Register’s engineer website or from the organisation or body promoting the document. In some cases, the document is only available for purchase from the organisation or a recognised supplier.

Hierarchy of legislation and standards

In this document list, the hierarchy of documents within the following tables is defined in order of significance.

Detailed first are those Statutory Acts, or regulations that are legally enforceable. These are followed by a recognised list of documents known as ‘second tier’ documents. This series of documents provides practical guidance on ways to comply with the functional requirements of regulations. This guidance is not law but provides information that, if followed correctly, will ensure that legal obligations have been met.

Where someone chooses to depart from this guidance, they will need to ensure that the method chosen provides equivalent or better standards of safety than the relevant published guidance. The guidance provided within appropriate second tier documents will be used to assess compliance.

The next tier of documents is gas industry standards that are aimed specifically at the installation, commissioning or maintenance of gas equipment (pipework, appliances, etc). These are known as Normative Documents and are referred to as ‘Gas Industry Standards’. These documents, in conjunction with any available manufacturer’s instructions, will be used by

Gas Safe Register to assess compliance.

Finally, the remaining listings provide details of links to other available information considered useful to help registered businesses to comply with their obligations and assist them in carrying out their day-to-day activities. These are referred to as Informative Documents.

1. Hierarchy of documents Legislation

In this section, the listed documents are those brought to the Statute Book by Act of Parliament and are referenced as Statutory Instruments (SI) or equivalent. These are the law in the respective countries as stated and must be followed. The SI Reference number (or equivalent) is preceded by the year of it being added to the Statute Book, ie, the Gas Safety (Installation and Use) Regulations 1998 has an SI Number of 1998:2451. Regulations are in general written in a format that provides highlevel requirements.

Documents supporting legislation

These documents provide practical guidance on ways to comply with the functional requirements of the Regulations.

For the Building Regulations, these are outlined in a series of Approved Documents (AD) published by the appropriate government department responsible for the Regulations.

The ADs that currently apply to gas work are:

• A Structure

• B Fire safety

• F Ventilation

• G3 Hot water storage

• J Heat producing appliances

• L Conservation of fuel and power

• M Access to and use of buildings

• P Electrical safety in dwellings.

Each document contains general guidance on the performance expected of materials and building work in

order to comply with each of the requirements of the Building Regulations, and practical examples and solutions on how to achieve compliance for some of the more common building situations.

2. Gas Industry Standards

In this section are included all the Gas Industry Standards published by the three current Standard Setting Bodies, which are:

• British and European Standards (BSI)

• Institution of Gas Engineers and Managers (IGEM)

• Liquid Gas UK (formerly known as UKLPG).

One standard is published by National Caravan Council (NCC).

3. Documents under review

When published, if it is known that the three-month validity period coincides with a period of time in which a standard being revised is out for public comment, the final date for comment will be included.

Gas Safe Register will use best endeavours to keep the documents under review as up to date as possible but Gas Safe Register is NOT responsible for reviewing, revising or updating industry standards. Where a registered business or industry stakeholder has an enquiry with regard to revisions to guidance documents then these enquiries should be directed to the relevant Standard Setting Body.

Comments on draft standards can be submitted via:

• British and European Standards (BSI)

• Institution of Gas Engineers and Managers (IGEM).

4. Links to online documents

When viewing this document online, hyperlinks are active so that you can open the document and then be read or it for later use. However, all saved documents will be considered as uncontrolled versions, and you should check that you are referencing the current version.

5. Inspections undertaken by Gas Safe Register

When Gas Safe Register inspects work undertaken by registered gas businesses in Great Britain, Northern Ireland and the Isle of Man and Guernsey, in the first instance it will assess against the manufacturer’s installation instructions. Where these are not available or relevant, it will inspect against the criteria as specified within legislative documents and relevant gas industry standards. However, it is recognised that, due to the differences of individual legislation used in different geographical areas, there will be some differences in application. While conducting inspections, due regard will be taken of the requirements of all appropriate guidance.

6. General

This Gas Safe Register document will be updated and republished on, or about the following dates each year:

• 1 January

• 1 April

• 1 July

• 1 October.

If you identify an error in this document or you are aware of reference documents that you think should be added to future editions, please email: technical@gassaferegister. co.uk

BSI, IGEM and Liquid Gas UK develop and publish guidance with the help of industry in the form of committees. Gas Safe Register does not hold any responsibility for the development and publication of this type of guidance document. Where registered businesses and stakeholders have questions regarding these guidance documents, these should be directed to the relevant Standard Setting Body.

7: LEGISLATION

Health and Safety Legislation

Health and Safety at Work etc Act 1974 (GB)

The Management of Health and Safety at Work Regulations 1999 (GB)

The Workplace (Health, Safety and Welfare) Regulations 1992 (GB)

Health and Safety at Work (Northern Ireland) Order 1978

Health and Safety at Work etc Act 1974 (of Parliament) (As applied to Isle of Man)

The Construction (Design and Management) Regulations 2003 (As applied to Isle of Man)

The Health and Safety at Work (General) (Guernsey) Ordinance 1987, As Amended – Version 7 September 2020

Gas Safety Legislation

The Gas Safety (Installation and Use) Regulations 1998 (England, Scotland & Wales)

The Gas Safety (Installation and Use) Regulations (Northern Ireland) 2004

Gas Safety (Installation and Use) Regulations 1998 as amended and applied by the Gas Safety (Installation, Use and Management) (Application) Order 2021 (As applied to Isle of Man)

The Health and Safety (Gas) (Guernsey) Ordinance, 2006 As Amended Version – May 2016

Safe Work with Gas Systems and Appliances, Approved Code of Practice – Health & Safety at work (Jersey) Law, 1989 – 1st February 2021

The Gas Appliances (Safety) Regulations 1995 (As applied in the United Kingdom)

The General Product Safety Regulations 2005

The Gas Safety (Management) Regulations 1996 (As applied in Great Britain) (AMD 2023)

The Gas Safety (Management) Regulations (Northern Ireland) 1997

The Gas Safety (Rights of Entry) Regulations 1996 (as applied to Great Britain)

The Gas (Northern Ireland) Order 1996, Schedule 5 (Powers of Entry, etc)

Gas Safety (Rights of Entry) Regulations 1983 as applied by the Gas Safety (Application) Order 1996 (Isle of Man)

Part 7 of The Health and Safety (Gas) (Guernsey) Ordinance, 2006 As Amended Version May 2016

Reporting of Injuries, Diseases and Dangerous Occurrences (RIDDOR)

The Reporting of Injuries, Diseases and Dangerous Occurrences Regulations 2013 (RIDDOR) (GB)

Reporting of Injuries, Diseases and Dangerous Occurrences Regulations (Northern Ireland) 1997 Reporting of Injuries, Diseases and Dangerous Occurrences Regulations 1999 (RIDDOR) (Isle of Man)

The Health and Safety at Work (General) (Guernsey) Ordinance, 1987 (includes RIDDOR-type reporting)

Building Legislation

Building Regulations (England and Wales) 2010

Building and Buildings, England & Wales, The Building Regulations & (Amendment) Regulations 2015

Building Regulations & (Amendments) (Wales) Regulations 2013

Building Standards (Scotland) Regulations 2004

Building (Scotland) Amendment Regulations 2010

Building (Scotland) Amendment Regulations 2011

Building (Miscellaneous Amendments) (Scotland) Regulations 2013

Building (Scotland) Amendment Regulations 2022

Building Regulations (Northern Ireland) 2012

The Building (Guernsey) Regulations 2012

Building Bylaws (Jersey) 2007

Building Regulations 2014 (Isle of Man)

Construction (Design and Management) Regulations 2015 (Great Britain)

The Construction (Design and Management) Regulations (Northern Ireland) 2016

The Construction (Design and Management) Regulations 2003 (As applied to Isle of Man)

Building Control (Approved Documents) (No. 2) Order 2019 (As applied to Isle of Man)

Other Legislation

The Workplace (Health, Safety and Welfare) Regulations 1992

The Dangerous Substances and Explosive Atmospheres Regulations 2002 (DSEAR) (GB)

Control of Substances Hazardous to Health Regulations 2002 (COSHH) (GB)

The Pressure Equipment (Safety) Regulations 2024

The Pressure Equipment (Amendment) Regulations 2015 (UK)

The Pressure Systems Safety Regulations 2000 (GB)

Control of Asbestos at Work Regulations 2002 (GB)

Control of Asbestos at Work (Northern Ireland) Regulations 2003

The Control of Asbestos Regulations (GB) 2012

The Control of Asbestos Regulations (Northern Ireland) 2012 Managing Asbestos (Isle of Man)

HSE Guernsey – Management of Exposure to Asbestos in Workplace Buildings and Structures – ACOP

HSE Guernsey – Control of Asbestos – ACOP 2017

The Electricity at Work Regulations 1989 (GB)

Electricity At Work Regulations (Northern Ireland) 1991

Note 1: Further information on ordinances in Guernsey at: www.gov.gg/hseguidance

Note 2: Further information on legislation in the Isle of Man at: https://pabc.gov.im/buildingcontrol/building-control/

8: DOCUMENTS SUPPORTING LEGISLATION

Key Approved Documents to the Building Regulations (England) Approved Document 7: Materials and workmanship

B: Fire Safety – Volume 1: Dwelling houses

B: Fire Safety – Volume 2: Buildings other than dwelling houses

F: Ventilation Volume 1: Dwellings

F: Ventilation Volume 2: Buildings other than dwellings

G: Sanitation, hot water safety and water efficiency (2016 edition)

J: Combustion Appliances & Fuel Storage Systems

L: Conservation of fuel and power –Volume 1: Dwellings

L: Conservation of fuel and power – Volume 2: Buildings other than dwellings

Second-tier documents to the Building Regulations – England Code for Sustainable Homes & Technical Guide December 2014

Building Energy Performance Assessment

Key approved documents to the Building Regulations (Wales)

B: Fire Safety – Volume 1: Dwellinghouses

B: Fire Safety – Volume 2: Buildings other than dwellinghouses

F: Ventilation – Volume 1: Dwellings

F: Ventilation – Volume 2: Buildings other than dwellings

G: Sanitation, hot water safety and water efficiency (2018 edition)

J: Combustion Appliances & Fuel Storage Systems

L: Conservation of fuel and power –Volume 1: Dwellings

L: Conservation of fuel and power – Volume 2: Buildings other than dwellings

Second tier documents to the Building Regulations – Wales Code for Sustainable Homes & Technical Guide December 2014

Building Energy Performance Assessment

Key Approved Documents to the Building Standards (Scotland) Regulations (Domestic)

Scottish Technical Handbook (Domestic)

Section 2-Domestic Fire

Section 3-Domestic Environment

Section 6-Domestic Energy

Building Energy Performance Assessment

Key Approved Documents to the Building Standards (Scotland) Regulations (Non-Domestic)

Scottish Technical Handbook (Non-Domestic)

Section 2 – Non-Domestic Fire

Section 3 – Non-Domestic Environment

Section 6-Non-Domestic Energy

Second-tier documents to the Building Standards (Scotland) Regulations

Scottish Government Guide to the Condensing Boiler Installation Assessment

Building Energy Performance Assessment

Key Approved Documents to the Building Standards (Regulations) Northern Ireland

DFP Technical Booklet C: 2012 –Site preparation and resistance to moisture

DFP Technical Booklet E: 2012 –Fire Safety

DFP Technical Booklet F1: 2022 –Conservation of fuel and power in dwellings

DFP Technical Booklet F2: 2022 –Conservation of fuel and power in buildings other than dwellings

DFP Technical Booklet K: 2012 – Ventilation

DFP Technical Booklet L: 2012 –Combustion appliances and fuel storage systems

DFP Technical Booklet P: 2012 – Sanitary appliances, unvented hot water storage systems and reducing the risk of scalding

Building Energy Performance Assessment

Key Approved Documents to the Building Regulations Isle of Man (IOM)

B-Fire Safety – Fire safety (2022 Edition)

F-Ventilation (2022 Edition)

J-Combustion Appliances & Fuel Storage Systems (2022 Edition)

L1-Conservation of Fuel & Power in Dwellings (2022 Edition)

> L2-Conservation of Fuel & Power in Buildings other than Dwellings (2022 Edition)

Building Energy Performance Assessment

Key Approved Documents to the Building Bylaws (Guernsey) –Channel Islands

B-Fire Safety – Volume 1: Dwelling houses

B-Fire Safety – Volume 2: Buildings other than dwelling houses

F-Ventilation

J-Heat producing appliances and Fuel Storage Systems

L1-Conservation of Fuel & Power in Dwellings

L2-Conservation of Fuel & Power –Buildings other than Dwellings

Building Energy Performance Assessment

Key Approved Documents to the Building Bylaws (Jersey) –Channel Islands

Part 2 – Fire Safety

Part 3 – Combustion appliances and Fuel Storage Systems

Part 5 – Ventilation

Part 11 – Conservation of Fuel and Power

HSE Publications and other Approved Codes of Practice (Great Britain)

L21 – Management of Health & Safety at Work. Withdrawn, see HSG65

L24 – Workplace health, safety and welfare (ACoP & Guidance)

2nd Edition

L25 – Personal Protective Equipment at Work

L56 – Safety in the Installation and use of Gas Systems and Appliances

– Approved Code of Practice

L80 – A guide to the Gas Safety (Management) Regulations 1996

L108 – Controlling noise at work

– The Control of Noise at Work Regulations 2005 – Guidance on Regulations

L122 – Safety of pressure systems – Pressure Systems Safety Regulations 2000 – Approved Code of Practice (Second Edition)

L138 – Dangerous Substances and Explosive Atmospheres. Dangerous Substances and Explosive Atmospheres Regulations 2002. Approved Code of Practice and Guidance

L143 – Control of Asbestos Regulations 2012 (ACoP) – The management of asbestos in nondomestic premises, and Work with materials containing asbestos (Second Edition), incorporating previous L127

L153 – Managing health and safety in construction – Construction (Design and Management) Regulations 2015 Approved Code of Practice

HSG47 – Avoiding danger from underground services – Third edition 2014

HSG48 – Reducing error and influencing behaviour

HSG65 – Managing for Health and Safety Management – Third Edition – 2013

HSG85 – Electricity at Work –Safe working practices – Third Edition 2013

HSG97 – A step-by-step guide to Control of Substances Hazardous to Health (COSHH) assessment (see also link to COSHH Essential Guidance publications below)

HSG137 – Health Risk Management – A practical guide for managers in small and mediumsized enterprises

HSG176 – The storage of flammable liquids in tanks

HSG210 – Asbestos Essentials – A task manual for building, maintenance and allied trades on non-licensed asbestos work (Free task sheets)

HSG213 – Introduction to Asbestos Essentials

HSG250 – Guidance on permitto-work systems: A guide for the petroleum, chemical and allied industries

HSG253 – The safe isolation of plant and equipment (Second edition)

HSG261 – Health and safety in motor vehicle repair and associated industries

EH40 – Workplace Exposure Limits (2020)

INDG163 (rev4) – Risk assessment (A brief guide to controlling risks in the workplace)

INDG223 (rev5) – Managing asbestos in buildings (A brief guide)

INDG231 (rev1) – Electrical safety and you (A brief guide)

INDG258 (rev1) – Confined spaces (A brief guide to working safely)

INDG428 (08/09) – Inspecting and maintaining or replacing buried metallic pipework carrying LPG vapour

INDG223 (rev5) – Manage asbestos in buildings: A brief guide

INDG370 (rev1) – Controlling Fire and explosion risks in the workplace – A brief guide to the Dangerous Substances and Explosive Atmospheres Regulations (DSEAR)

INDG453 (rev1) – Reporting accidents and incidents at work

A brief guide to the Reporting of Injuries, Diseases and Dangerous Occurrences Regulations (RIDDOR)

HSE AO – Advice on non-licensed work with Asbestos. Introduction to ‘Asbestos essentials’ task sheets

Control of Substances Hazardous to Health (COSHH) Essentials guidance publications

Guidelines on ventilation, thermal comfort and indoor air quality in schools

LAQM.TG(22) Local Air Quality Management – Technical Guidance

CAIS10 (Revision 3) – Ventilation of kitchens in catering establishments

CAIS23 (Revision 3) – Gas safety in catering and hospitality

Note 3: Further asbestos-related guidance at: www.hse.gov.uk/ asbestos/information.htm

Note 4: Further Health and Safety Guidance (HSG) publications at: www.hse.gov.uk/pubns/books/ index-hsg-ref.htm

HSENI Publications and other Approved Codes of Practice (Northern Ireland)

A guide to the Reporting of Injuries, Diseases and Dangerous Occurrences Regulations (Northern Ireland) 1997

L56 Safety in the installation and use of gas systems and appliances

– GB ACOP approved for use in NI Memorandum of guidance on the Electricity at Work Regulations (Northern Ireland) 1991

Note 5: Further information on Northern Ireland Approved Codes of Practice and guidance notes at: www.hseni.gov.uk/publications

HSE Publications and other Approved Codes of Practice (Guernsey)

Safety in the Installation & Use of Gas Systems & Appliances. The Health and Safety (Gas) (Guernsey) Ordinance 2006

The Organisation and Management of Health & Safety in Construction (Guernsey)

Reporting an Injury, Disease or Dangerous Occurrence (Guernsey)

Note 6: Note 6: Further information on Approved Codes of Practice and guidance notes for gas safety and other important issues: www.gov.gg/hseguidance

9: GAS INDUSTRY STANDARDS

British and European Standards

BS 4163: 2021 + A1:2022

Health and safety for design and technology in educational and similar establishments. Code of practice

BS 3632: 2023 Residential park homes – Specification

BS 5440-1: 2023 Chimneys, flue pipes and ventilation for gas appliances of rated input not exceeding 70kW net (1st, 2nd and 3rd family gases). Design, installation, commissioning and maintenance of chimneys. Specification

BS 5440-2: 2023 Chimneys, flue pipes and ventilation for gas appliances of rated input not exceeding 70kW net (1st, 2nd and 3rd family gases). Installation and maintenance of ventilation provision for gas appliances. Specification

BS 5546: 2010 Specification for installation and maintenance of gasfired water-heating appliances of rated input not exceeding 70kW net

PD 54823: 2016 Guidance for the design, commissioning and maintenance of LPG systems in small craft

BS 5864: 2019 Installation and maintenance of gas-fired ducted air heaters of rated input not exceeding 70kW net (2nd and 3rd family gases). Specification

BS 5871-1: 2005 Specification for the installation and maintenance of gas fires, convector heaters, fire/ back boilers and decorative fueleffect gas appliances. Gas fires, convector heaters, fire/back boilers and heating stoves (2nd and 3rd family gases)

BS 5871-2: 2005 Specification for the installation and maintenance of gas fires, convector heaters, fire/back boilers and decorative fuel-effect gas appliances. Inset live fuel effect gas fires of heat input not exceeding 15kW and fire/back boilers (2nd and 3rd family gases)

BS 5871-3: 2005 Specification for the installation and maintenance of gas fires, convector heaters, fire/ back boilers and decorative fuel effect gas appliances. Decorative fuel-effect gas appliances of heat input not exceeding 20kW (2nd and 3rd family gases)

BS 5871-4: 2007 Specification for the installation and maintenance of gas fires, convector heaters, fire/ back boilers and decorative fueleffect gas appliances. Independent gas-fired flueless fires, convector heaters and heating stoves of nominal heat input not exceeding 6kW (2nd and 3rd family gases)

BS 6172: 2010 + A1:2017 Specification for installation, servicing and maintenance of domestic gas cooking appliances (2nd and 3rd family gases). Specification

BS 6173: 2020 Installation and maintenance of gas fired catering appliances for use in all types of catering establishments (2nd and 3rd family gases). Specification

BS 6230: 2011 Specification for installation of gas-fired forced convection air heaters for commercial and industrial space heating (2nd and 3rd family gases)

BS 6400-1: 2016 Specification for installation, exchange, relocation, maintenance and removal of gas meters with a maximum capacity not exceeding 6m³/h. Low pressure (2nd family gases). Under review

BS 6400-2: 2018 Specification for installation, exchange, relocation, maintenance and removal of gas meters with a maximum capacity not exceeding 6m³/h. Medium pressure (2nd family gases). Under review

BS 6400-3: 2007 Specification for installation, exchange, relocation and removal of gas meters with a maximum capacity not exceeding 6m³/h. Low and medium pressure (3rd family gases)

BS 6644: 2011 Specification for the installation and maintenance of gas-fired hot water boilers of rated inputs between 70kW (net) and 1.8MW (net) (2nd and 3rd family gases)

BS 6798: 2014 Specification for selection, installation, inspection, commissioning, servicing and maintenance of gas-fired boilers of rated input not exceeding 70kW net. Under review

BS 6891: 2015 + A1:2019

Specification for the installation and maintenance of low pressure gas installation pipework of up to 35mm (R 1¼) on premises

BS 6896: 2011 Specification for installation and maintenance of gasfired overhead radiant heaters for industrial and commercial heating (2nd and 3rd family gases)

BS 7624: 2004 Installation and maintenance of domestic direct gas-fired tumble dryers of up to 6kW heat input (2nd and 3rd family gases)

BS 7671: 2018 + A3:2024 Requirements for Electrical Installations

BS 7967: 2015 Guide for the use of electronic portable combustion gas analysers for the measurement of carbon monoxide in dwellings and the combustion performance of domestic gas-fired appliances

BS 7967-5: 2010 Carbon monoxide in dwellings and other premises and the combustion performance of gas-fired appliances. Guide for using electronic portable combustion gas analysers in non-domestic premises for the measurement of carbon monoxide and carbon dioxide levels and the determination of combustion performance

BS 8313: 1997 Code of practice for accommodation of building services in ducts

BS 8446: 2020 Installation and maintenance of open-flued, non-domestic gas-fired laundry appliances. Specification

BS 8660-1: 2011 Gas-fired micro-cogeneration appliances of rated thermal input not exceeding 70kW net. Specification for selection, installation, inspection, commissioning, servicing and maintenance of Stirling engine micro-cogeneration appliances

BS EN 721: 2019 Leisure accommodation vehicles. Safety ventilation requirements

BS EN 751-1:1997 Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water. Anaerobic jointing compounds

BS EN 751-2:1997 Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water. Nonhardening jointing compounds

BS EN 751-3:2022+A1:2023

Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water. Unsintered PTFE tapes and PTFE strings

BS EN 1775: 2007 Gas supply. Gas pipework for buildings. Maximum operating pressure less than or equal to 5 bar. Functional recommendations

BS EN 12327: 2012 Gas infrastructure. Pressure testing, commissioning and decommissioning procedures. Functional requirements

BS EN 50292: 2023 Electrical apparatus for the detection of carbon monoxide in domestic premises, caravans and boats. Guide on the selection, installation, use and maintenance

BS EN 15001-1: 2023 Gas Infrastructure. Gas installation pipework with an operating pressure greater than 0.5 bar for industrial installations and greater than 5 bar for industrial and nonindustrial installations. Detailed functional requirements for design, materials, construction, inspection and testing

BS EN 15001-2: 2023 Gas supply systems. Gas installation pipework with an operating pressure greater than 0.5 bar for industrial installations and greater than 5 bar for industrial and non-industrial installations. Detailed functional requirements for commissioning, operation and maintenance

BS EN ISO 10239: 2025 Small craft. Liquefied petroleum gas (LPG) systems

BS EN 13410: 2001 Gas-fired overhead radiant heaters. Ventilation requirements for non-domestic premises

BS EN 1749: 2020 Classification of gas appliances according to the method of supplying combustion air and of evacuation of the combustion products (types)

BS EN 1949: 2021 Specification for the installation of LPG systems for habitation purposes in leisure accommodation vehicles and accommodation purposes in other vehicles

Institution of Gas Engineers and Managers Documents (IGEM)

IGE/UP/1 Edition 2 Strength testing/tightness testing/direct purging of industrial and commercial gas installations. Under review

IGE/UP/1A Edition 2 Strength/ tightness testing/purging of small, low-pressure industrial and commercial installations. Under review

IGEM/UP/1B Edition 3 Tightness testing and direct purging of small Liquefied Petroleum Gas/Air, NG and LPG installations. Under review

IGEM/UP/1C Strength testing, tightness testing and direct purging of Natural Gas and LPG meter installations

IGEM/UP/2 Edition 3 Installation pipework on industrial and commercial premises. Under review

IGEM/UP/3 Edition 3 Gas-fuelled spark ignition and dual fuel engines. Under review

IGEM/UP/4 Edition 4

Commissioning of gas fired plant on industrial and commercial premises

IGEM/UP/6 Edition 3 Application of compressors to natural gas fuel systems

IGE/UP/7 Edition 2 with amendments October 2008 Gas installations in timber framed and light steel framed buildings. Note 7: IGE/UP/7 – Edition 2 with Amendments is available free at: www.igem.org.uk

IGE/UP/9 Edition 3 Application of Gas systems to Gas turbines and supplementary and auxiliary fired burners

IGEM/UP/10 Edition 4 with amendments March 2016 & February 2017 Installation of flued gas appliances in industrial and commercial premises

IGEM/UP/11 Edition 3 Gas installations for educational establishments

IGEM/UP/12 Edition 3 Application of burners and controls to gas fired process plant

IGEM/UP/16 Edition 2 with Amendments November 2023 Design for natural gas installations on industrial and commercial premises with respect to DSEAR

IGEM/UP/17 Edition 2 Shared chimney and flue systems for domestic gas appliances

IGEM/UP/18 Gas installations for vehicle repair and body shops

IGEM/UP/19 Edition 2 Design and application of interlock devices/associated systems in gas appliance installations in catering

IGEM/UP/19 Edition 2

Supplement 1 Guidance for gas engineers to the application of relevant sections of IGEM/UP/19 in catering establishments

Note 8: IGEM/UP/19 Edition 2

Supplement 1 is available free at: www.igem.org.uk

IGEM/GL/8 Edition 4 Reporting and investigation of gas-related incidents. Under review

IGE/GL/9 Guidance for large gas consumers in dealing with natural gas supply emergencies

Available free at: www.igem.org. uk/resource/igem-gl-9.html

IGE/TD/4 Edition 5 Polyethylene (PE) and steel gas services and service pipework

IGEM/G/1 Edition 2 Defining the end of the Network

IGEM/G/4 Edition 2 Definitions for the gas industry. Under review

IGEM/G/5 Edition 3 with amendments April 2023 Gas in multi-occupancy buildings. Under review

IGEM/G/6 Edition 2 Gas supplies to mobile dwellings

IGEM/G/7 Risk assessment techniques

IGEM/G/10 Non-return valves

IGEM/G/11 Edition 2 with amendments July 2022 and June 2024 Gas industry unsafe situations procedure

Note 9: Available free at: https:// www.igem.org.uk/resource/ igem-g-11-edition-2-gasindustry-unsafe-situationsprocedure.html

IGEM/G/11 Supplement 1 Responding to domestic CO alarm activations/reports of fumes after attendance by the emergency service provider or the Liquified Petroleum Gas supplier

Note 10: Available free at: https:// www.igem.org.uk/resource/ igem-g-11-supplement-1responding-to-domestic-coalarm-activations-reports-offumes.html

IGEM/G/13 with Amendments August 2023 Domestic supply capacity and operating pressure at the outlet of the meter

Note 11: Available free at: https:// www.igem.org.uk/resource/ igem-g-13-domestic-supplycapacity-and-operatingpressure-at-the-outlet-of-themeter.html

IGE/GM/4 Edition 3 Flow metering practices. Inlet pressure exceeding 38 bar and not exceeding 100 bar

IGE/GM/5 Edition 4 Electronic gas meter volume conversion systems. Under review

IGEM/GM/6 Edition 3 Non-domestic meter installations. Standard designs

IGEM/GM/7A Edition 2

Electrical connections for gas metering equipment

IGEM/GM/7B Edition 2

Hazardous area classification for gas metering equipment

>

IGEM/GM/8 – Part 1 Edition 2

Design

IGEM/GM/8 – Part 2 Edition 2

Location, housings and compounds

IGEM/GM/8 – Part 3 Edition 2

Fabrication, installation, testing and commissioning

IGEM/GM/8 – Part 4 Edition 2

Operation and maintenance

IGEM/GM/8 – Part 5 Edition 2

Notices and labels

IGEM/IG/1 Ed 2 Standards of training in Gas Work

Note 12: Available free at: https:// www.igem.org.uk/resource/ igem-ig-1-ed-2-standards-oftraining-in-gas-work.html

IGEM/IG/1 Supplement 1 Nondomestic training specification

Note 13: Available free at: https://www.igem.org. uk/resource/igem-ig-1supplement-1-non-domestictraining-specification.html

IGEM/SR/25 Edition 2 Hazardous area classification of natural gas installations. Under review

IGEM/SR/29 Edition 2 Dealing with gas escapes

IGEM/H/1 Edition 2 Reference Standard for low pressure hydrogen utilisation

Note 14: Available free at: https:// www.igem.org.uk/resource/ igem-h-1-with-amendmentsjune-2022-reference-standardfor-low-pressure-hydrogenutilisation.html

Liquid Gas UK Codes of Practice (CoP)

UKLPG – LPG Technical Fundamentals

CoP 1 Part 1 Bulk LPG Storage at Fixed Installations – Design, Installation and Operation of Vessels Located Above Ground (October 2017)

CoP 1 Part 2 Bulk LPG Storage at Fixed Installations – Vapour Off-take Small Bulk Propane Installations (March 2021)

CoP 1 Part 3 Bulk LPG Storage at Fixed installations – Examination and Inspection (April 2020)

CoP 1 Part 4 Bulk LPG Storage at Fixed Installations – Buried/ Mounded LPG Storage Vessels (January 2021)

CoP 7 Storage of Full and Empty LPG Cylinders and Cartridges (2021)

CoP 17 LPG vessels: Preparing for and Removing from Service (2025) CoP 22 Including Amd 1 Design Installation and Testing of LPG Piping Systems (Updated 2021)

CoP 24 Part 3 Use of LPG Cylinders – Use of LPG for Commercial Catering Events, Street Food and Mobile Catering (September 2017)

CoP 25 LPG Central storage and Distribution Systems for Multiple Consumers (June 2018)

CoP 32 LPG systems in Leisure Accommodation Vehicles and Road Vehicles with Habitation – Post Delivery Inspection, Commissioning and Maintenance (December 2020)

CoP 33 Use of LPG Cylinders (July 2023) (Replaces COP 24 Part 1/5/6)

GN 2 A Guide for Cabinet Heaters Servicing (March 2002)

10: OTHER INFORMATIVE DOCUMENTS AND USEFUL REFERENCES

Liquid Gas UK Consumer Guidance Sheets (CGS)

CGS O1 Mobile Bottled Gas Heaters and Condensation

CGS 03 The Use of LPG Cylinders Indoors

CGS 04 LPG Patio HeatersSafe Use

CGS 05 LPG Hose and Tubing for use with Vapour Offtake Cylinders

CGS 20 Camping Safely

CGS 22 Owning your own LPG Storage Vessel

CGS 25 LPG Installation Record and Documentation

CGS 28 Safe Use of Propane and Butane Cylinders and Cartridges

CGS 37 Guidance for Private Ownership and Filling of ‘Freestanding’ Liquified Petroleum Gas (LPG) Cylinders

CGS 39 Regulators – Safe Use

Note 15: Liquid Gas UK Consumer Guidance Sheets (CGS) are available at: https://www. liquidgasuk.org/domestic/ consumer-guidance-sheets

Other Industry Procedures/ Documents

DW/172 Specification for kitchen ventilation systems 2nd Edition (incorporates addendum April 2020)

IGEM/G/11 Edition 2 with amendments July 2022 and June 2024 The Gas industry unsafe situations procedure (GIUSP)

Note 16: Available free at: https://www.igem.org.uk/ technical-services/technicalgas-standards/general/igemg-11-edition-2-gas-industryunsafe-situations-procedure/ All Technical Bulletins For further information see TB 1000. This can be viewed by logging into your online account at: www. GasSafeRegister.co.uk/sign-in

All Gas Safe Register Safety Alerts These can be viewed by logging into your online account at: www.GasSafeRegister.co.uk/ sign-in

All Gas Safe Register Industry Standard Updates These can be viewed by logging into your online account at: www. GasSafeRegister.co.uk/sign-in

Note 17: Gas Safe Registered businesses can find up-to-date access manufacturer’s instructions/ information for a wide range of heating appliances notably boilers and warm air heating appliances on the HHIC’s website at: xxxxx. For further information go to: Click here

11: ACCESS TO INDUSTRY STANDARDS FROM GAS SAFE REGISTER

The Industry Standard numbers in table below are those included in the list of current Industry Standards available on a subscription basis to the majority of Gas Safe registered business. To subscribe, log into your online account at www. GasSafeRegister.co.uk/sign-in and choose Standards Subscriptions’. Choose and pay for a one or threeyear subscription and then you will be able to access the normative documents.

BS 5440-1: 2023 Chimneys, flue pipes and ventilation for gas appliances of rated input not exceeding 70kW net (1st, 2nd and 3rd family gases). Design, installation, commissioning and maintenance of chimneys. Specification

BS 5440-2: 2023 Chimneys, flue pipes and ventilation for gas appliances of rated input not exceeding 70kW net (1st, 2nd and 3rd family gases). Installation and maintenance of ventilation provision for gas appliances. Specification

BS 5546: 2010 Specification for installation and maintenance of gasfired water-heating appliances of rated input not exceeding 70kW net

PD 54823: 2016 Guidance for the design, commissioning and maintenance of LPG systems in small craft

BS 5864: 2019 Installation and maintenance of gas-fired ducted air heaters of rated input not exceeding 70kW net (2nd and 3rd family gases). Specification

BS 5871-1: 2005 Specification for the installation and maintenance of gas fires, convector heaters, fire/ back boilers and decorative fueleffect gas appliances. Gas fires, convector heaters, fire/back boilers and heating stoves (2nd and 3rd family gases)

BS 5871-2: 2005 Specification for the installation and maintenance of gas fires, convector heaters, fire/back boilers and decorative fuel-effect gas appliances. Inset live fuel-effect gas fires of heat input not exceeding 15kW and fire/back boilers (2nd and 3rd family gases)

BS 5871-3: 2005 Specification for the installation and maintenance of gas fires, convector heaters, fire/ back boilers and decorative fueleffect gas appliances. Decorative fuel effect gas appliances of heat

input not exceeding 20kW (2nd and 3rd family gases)

BS 5871-4: 2007 Specification for the installation and maintenance of gas fires, convector heaters, fire/ back boilers and decorative fueleffect gas appliances. Independent gas-fired flueless fires, convector heaters and heating stoves of nominal heat input not exceeding 6kW (2nd and 3rd family gases)

BS 6172: 2010 + A1 2017 Specification for installation, servicing and maintenance of domestic gas cooking appliances (2nd and 3rd family gases). Specification

BS 6173: 2020 Installation and maintenance of gas fired catering appliances for use in all types of catering establishments (2nd and 3rd family gases). Specification

BS 6230: 2011 Specification for installation of gas-fired forced convection air heaters for commercial and industrial space heating (2nd and 3rd family gases)

BS 6400-1: 2016 Specification for installation, exchange, relocation, maintenance and removal of gas meters with a maximum capacity not exceeding 6m³/h. Low pressure (2nd family gases)

BS 6400-2: 2018 Specification for installation, exchange, relocation, maintenance and removal of gas meters with a maximum capacity not exceeding 6m³/h. Medium pressure (2nd family gases)

BS 6400-3: 2007 Specification for installation, exchange, relocation and removal of gas meters with a maximum capacity not exceeding 6m³/h. Low and medium pressure (3rd family gases)

BS 6644: 2011 Specification for the installation and maintenance of gas-fired hot water boilers of rated inputs between 70kW (net) and 1.8MW (net) (2nd and 3rd family gases)

BS 6798: 2014 Specification for selection, installation, inspection, commissioning, servicing and maintenance of gas-fired boilers of rated input not exceeding 70kW net

BS 6891: 2015 + A1 2019

Specification for the installation and maintenance of low pressure gas installation pipework of up to 35mm (R1¼) on premises

BS 6896: 2011 Specification for installation and maintenance of gasfired overhead radiant heaters for industrial and commercial heating (2nd and 3rd family gases)

BS 7624: 2004 Installation and maintenance of domestic direct gas-fired tumble dryers of up to 6kW heat input (2nd and 3rd family gases)

BS 7967: 2015 Guide for the use of electronic portable combustion gas analysers for the measurement of carbon monoxide in dwellings and the combustion performance of domestic gas-fired appliances

BS 7967-5: 2010 Carbon monoxide in dwellings and other premises and the combustion performance of gas-fired appliances. Guide for using electronic portable combustion gas analysers in non-domestic premises for the measurement of carbon monoxide and carbon dioxide levels and the determination of combustion performance

BS 8446: 2020 Installation and maintenance of open-flued, non-domestic gas-fired laundry appliances. Specification

BS EN 721: 2019 Leisure accommodation vehicles. Safety ventilation requirements

BS EN 12327: 2012 Gas infrastructure. Pressure testing, commissioning and decommissioning procedures. Functional requirements

BS EN 15001-1: 2023 Gas Infrastructure. Gas installation pipework with an operating pressure greater than 0.5 bar for industrial installations and greater than 5 bar for industrial and nonindustrial installations. Detailed functional requirements for design, materials, construction, inspection and testing

BS EN 15001-2: 2023 Gas supply systems. Gas installation pipework with an operating pressure greater than 0.5 bar for industrial installations and greater than 5 bar for industrial and non-industrial installations. Detailed functional requirements for commissioning, operation and maintenance

BS EN 1949: 2021 Specification for the installation of LPG systems for habitation purposes in leisure accommodation vehicles and accommodation purposes in other vehicles

BS EN ISO 10239: 2025 Small craft. Liquefied petroleum gas (LPG) systems

BS EN 13410: 2001 Gas-fired overhead radiant heaters. Ventilation requirements for non-domestic premises

Institution of Gas Engineers and Managers Documents (IGEM)

IGEM/UP/1 Strength testing/ tightness testing/direct purging of industrial and commercial gas installations.

IGEM/UP/1A Strength/tightness testing/purging of small, low pressure industrial and commercial installations

IGEM/UP/1B Tightness testing and direct purging of small Liquefied Petroleum Gas/Air, NG and LPG installations

IGEM/UP/1C Strength testing, tightness testing and direct purging of Natural Gas and LPG meter installations

IGEM/UP/2 Installation pipework on industrial and commercial premises

IGEM/UP/3 Gas fuelled spark ignition and dual fuel engines

IGEM/UP/4 Commissioning of gas fired plant on industrial and commercial premises

IGEM/UP/6 Application of compressors to natural gas fuel systems

IGEM/UP/7 Gas installations in timber framed and light steel framed buildings.

Note 18: IGE/UP/7 – Edition 2 with Amendments is available free at: https://www.igem.org.uk/ resource/ige-up-7-edition-2a-2008-gas-installations-intimber-framed-and-light-steelframed-buildings.html

IGEM/UP/9 Application of Gas systems to Gas turbines and supplementary and auxiliary fired burners

IGEM/UP/10 Installation of flued gas appliances in industrial and commercial premises

IGEM/UP/11 Gas installations for educational establishments

IGEM/UP/12 Application of burners and controls to gas fired process plant

IGEM/UP/16 Design for natural gas installations on industrial and commercial premises with respect to DSEAR

IGEM/UP/17 Shared chimney and flue systems for domestic gas appliances

IGEM/UP/18 Gas installations for vehicle repair and body shops

IGEM/UP/19 Design and application of interlock devices/ associated systems in gas appliance installations in catering

IGEM/GL/8 Reporting and investigation of gas-related incidents

IGEM/GL/9 Guidance for large gas consumers in dealing with natural gas supply emergencies

Note 19: Available free at: https:// www.igem.org.uk/resource/ igem-gl-9.html

IGEM/TD/4 Polyethylene (PE) and steel gas services and service pipework

IGEM/G/1 Defining the end of the Network

IGEM/G/4 Definitions for the gas industry

IGEM/G/5 Gas in multi-occupancy buildings

IGEM/G/6 Gas supplies to mobile dwellings

IGEM/G/11 Gas industry unsafe situations procedure

Note 20: Available free at: https:// www.igem.org.uk/resource/ igem-g-11-edition-2-gasindustry-unsafe-situationsprocedure.html

IGEM/G/11 Supplement 1

Responding to domestic CO alarm activations/reports of fumes after attendance by the emergency service provider or the Liquified Petroleum Gas supplier

Note 21: Available free at: https:// www.igem.org.uk/resource/ igem-g-11-supplement-1responding-to-domestic-coalarm-activations-reports-offumes.html

IGEM/G/13 Domestic supply capacity and operating pressure at the outlet of the meter

Note 22: Available free at: https:// www.igem.org.uk/resource/ igem-g-13-domestic-supplycapacity-and-operatingpressure-at-the-outlet-of-themeter.html

IGEM/GM/4 Flow metering practices. Inlet pressure exceeding 38 bar and not exceeding 100 bar

IGEM/GM/5 Electronic gas meter volume conversion systems

IGEM/GM/6 Non-domestic meter installations. Standard designs

IGEM/GM/7A Electrical connections for gas metering equipment

IGEM/GM/7B Hazardous area classification for gas metering equipment

IGEM/GM/8 – Pt 1 Non-domestic meter installations. Design. Flow rate exceeding 6 m3h-1 and inlet pressure up to and not exceeding 38 bar

IGEM/GM/8 – Pt 2 Non-domestic meter installations. Location, housings and compounds for flow rate exceeding 6m³h-1 and inlet pressure up to and not exceeding 38 bar

IGEM/GM/8 – Pt 3 Nondomestic meter installations. Fabrication, installation, testing and commissioning for flow rate exceeding 6 m³h-1 and inlet pressure up to and not exceeding 38 bar

IGEM/GM/8 – Pt 4 Non-domestic meter installations. Operation and maintenance for flow rate exceeding 6m³h-1 and inlet pressure up to and not exceeding 38 bar

IGEM/GM/8 – Pt 5 Non-domestic meter installations. Notices and labels for flow rate exceeding 6m³h1 and inlet pressure up to and not exceeding 38 bar

Liquid Gas UK Codes of Practice (CoP)

CoP 1 Part 1 Bulk LPG Storage at Fixed Installations – Design, Installation and Operation of Vessels Located Above Ground (October 2017)

CoP 1 Part 2 Bulk LPG Storage at Fixed Installations – Vapour Off-take

Small Bulk Propane Installations (March 2021)

CoP 1 Part 3 Bulk LPG Storage at Fixed installations – Examination and Inspection (April 2020)

CoP 1 Part 4 Bulk LPG Storage at Fixed Installations – Buried/ Mounded LPG Storage Vessels (January 2021)

CoP 7 Storage of Full and Empty LPG Cylinders and Cartridges (2021)

CoP 17 LPG vessels: Preparing for and Removing from Service (2025)

CoP 22 Design Installation and Testing of LPG Piping Systems (Updated 2021)

CoP 24 Part 3 Use of LPG Cylinders – Use of LPG for Commercial Catering Events, Street Food and Mobile Catering (September 2017)

CoP 25 LPG Central storage and Distribution Systems for Multiple Consumers (June 2018)

CoP 32 LPG systems in Leisure Accommodation Vehicles and Road Vehicles with Habitation – Post Delivery Inspection, Commissioning and Maintenance (December 2020)

CoP 33 Use of LPG Cylinders (July 2023) (Replaces COP 24-part 1/5/6)

GN 2 A Guide for Cabinet Heaters Servicing (March 2002)

Get ready to grow

Dan Pollard, former plumber and founder at Fergus, shares some practical ways you can cut admin, sharpen up scheduling and get organised with job management software.

Many gas engineers are facing the dual challenge of running a profitable business while planning for a different, lowcarbon future. If you’re looking to bring in more people, diversify into renewables or simply get a better handle on your business, the right tools and systems can make a huge difference. Here are five practical ways to put your business on the front foot.

1 Sharpen up your scheduling

Hiring more engineers or expanding into new services is a positive step: but without proper job scheduling, it can cause more stress than it solves and chip away at your margins.

Job management software can make it easier to coordinate teams and keep everyone in the loop. A visual scheduler shows who’s available, where they’re working and what’s coming up. It’s ideal for tracking service plans, last-minute call-outs and larger install jobs.

It also helps if you’re looking to take on more complex work like renewables, where projects run over longer periods and require more coordination.

“One of the biggest blockers to business growth is waiting to get paid.”

2 Tackle cash flow head-on

Finishing the job doesn’t always mean seeing the money right away. If you’re still sending invoices days later or relying on BACS transfers, the payment delays can be damaging — especially if you’re carrying the cost of parts and labour upfront. Look for tools like Fergus Pay, where you can send invoices immediately after the job is signed off or take payment there and then with a QR code. Quicker payments mean more working capital for the next job, reducing your reliance on overdrafts or juggling supplier bills.

3 Price with confidence

Accurate quoting is essential for making a profit but if you underestimate labour time or forget to include every component, those costs come straight off your margin.

Using a proper quoting tool sets standard labour rates and links to your supplier price books to help you generate professional quotes quickly and consistently. You can see exactly what each job will cost and adjust if something changes. It also means you can review which types of work bring in the best returns.

4Make your website work harder

If your website isn’t set up to capture enquiries or convert them into jobs, you’re missing out. An online presence doesn’t have to be complex. Choose software that includes an enquiry tool that links directly to your website, letting customers submit job requests.

Leads can feed straight into your dashboard and can be tracked from start to finish.

5Lay the groundwork for renewables

Even if most of your work is still traditional gas boilers, now’s the time to get systems in place for low-carbon installs. Jobs like heat pumps or hybrid systems come with added complexity: more suppliers, paperwork, funding requirements and compliance steps.

Good job management software gives you control. You can tag jobs by type, store key documents like MCS certifications or commissioning reports, and build custom checklists for each stage of the work.

As you grow, this level of structure becomes even more important. It reduces reliance on memory or scribbled notes and ensures the whole team is working together. n

For more details and to book a demo visit: https:// fergus.com

How HIUs can hold the key to efficiency upgrades

Refurbishing ageing heat networks can futureproof them for a low-carbon future, writes Charlie Mowbray, senior product manager, at Ideal Heating Commercial.

Heat networks supply heat from a central source to consumers via a network of underground pipes carrying hot water. They can cover a large area, even an entire city, or be fairly local supplying a small cluster of buildings.

They are becoming a vital part of the UK’s low-carbon heating strategy. They provide an efficient, scaleable alternative to individual gas boilers or heat pumps and can reduce emissions, enhance resilience and lower energy costs.

But what can customers do if their system was installed more than a decade ago and is now underperforming due to ageing infrastructure and inefficiencies that could not have been anticipated?

“What can customers do if their system was installed more than a decade ago and is now underperforming?”

Refurbishing is one answer. Refurbing heat networks isn’t just about fixing short-term problems: it’s about futureproofing infrastructure for a low-carbon future, and a vast stock of existing systems should be brought up to modern standards if the UK is to meet its emissions targets.

Heat interface units (HIUs) are fundamental to how a heat network performs. An inefficient HIU can undermine even the most advanced energy centre, leading to poor user experience and escalating operational costs. By investing in modern, test-certified and serviceable units, supported by government funding where available, organisations can unlock substantial performance gains.

Through Heat Network Efficiency Scheme (HNES), £32 million is available through 2025, to provide grant funding to public, private and third-sector organisations for refurbishments.

Legacy HIUs

In many cases, poor network performance isn’t solely down to outdated boilers or plant equipment. A significant portion of the inefficiency arises from

older HIUs installed before any formal test regime was in place and they can struggle to manage temperature control, are difficult to maintain and often manufacturers are no longer in business.

Modern HIUs are engineered to control return temperatures more effectively, which has a direct impact on system efficiency. They also provide better control for users, improved hot water responsiveness and are often designed for easier installation and ongoing maintenance.

Poor commissioning or inaccessible components can negate the benefits of even the most technically capable equipment. This means that choosing HIUs should consider not only energy performance but also usability and long-term support from the manufacturer.

The upfront cost of replacing HIUs, particularly across large estates, can be significant. However, many network operators are finding that the long-term benefits justify the investment. If replacing these units leads to measurable efficiency improvements, the return on investment can often be realised in as little as 18-24 months.

Once this initial payback period is passed, the savings continue throughout the lifespan of the equipment, which typically ranges from 15 to 25 years. With funding support from HNES, organisations may be able to reduce the capital burden and justify upgrades.

Ultimately, HIU upgrades should be seen not as an expense but as an investment in long-term efficiency and reliability. When done strategically, with the right products and installation approach, they offer a practical path to restoring underperforming heat networks. n

The importance of upskilling

Hamid Salimi, Residential product manager at Daikin, looks at how the rise of hybrid heating systems is enabling gas engineers to diversify their skillset, access new revenue streams and thrive in a changing energy landscape.

While fully electric heat pump systems are ideal for many homes, not every property is immediately suitable –particularly those that are poorly insulated or rely on older radiator systems, which is where hybrid heating becomes a key option.

Hybrid heat pump systems combine a heat pump with a traditional gas boiler. The system intelligently chooses the most efficient heat source based on external temperatures, heating demand and running costs. This not only delivers year-round comfort and energy

“For gas engineers, hybrid systems are a unique opportunity to bring low-carbon solutions to a much wider customer base.”

efficiency but also reduces carbon emissions without the need for full property renovation or major system overhaul.

For gas engineers, hybrid systems are a unique opportunity to bring low-carbon

solutions to a much wider customer base, including those who might be hesitant to replace their gas boiler entirely. They provide a gentle introduction to renewable technology for homeowners, while enabling installers to gain experience with heat pump systems in a familiar context.

And because hybrid systems can typically integrate with existing pipework and radiators, the installation process is often quicker and less disruptive, making it a compelling option for both installers and homeowners.

Golden opportunity

As the UK accelerates its transition toward net zero, the heating industry is entering a pivotal new phase, where the traditional fossil fuel boiler is no longer the only solution for heating homes. The rise of heat pumps is a golden opportunity for heating professionals, especially gas engineers, to futureproof their businesses, meet growing demand for low-carbon technologies and play a central role in the country’s drive toward sustainability.

Rising awareness of

environmental issues coupled with soaring gas prices in recent years has led to more homeowners exploring renewable options. Heat pumps offer a practical and cost-effective way to reduce carbon footprints and running costs, particularly when paired with improved insulation or renewable electricity tariffs.

For heating professionals, this represents a significant growth market and one where demand is expected to outstrip supply for years to come.

New technology, similar skills

While the technology may be changing, the core skills required to succeed in the heating industry remain largely the same, requiring a solid understanding of system design, an ability to work with customers and a commitment to high standards of workmanship.

Gas engineers already possess many of these strengths, which makes them ideally suited to enter the heat pump market.

The demand for qualified installers is only going to grow. With the right support and a willingness to adapt, gas engineers can lead the way. n

Four-day week can boost sales and staff retention

80% hours for 100% pay

A forward-thinking heating and plumbing firm which has given its workers a four-day week with no loss of pay over the summer has said the trial has been so successful that it has achieved Gold Standard accreditation from the 4 Day Week Foundation.

Custom Heat, which is based in the Midlands and the South West of England, has reported a 1.66% increase in quarterly sales despite operating a four-day working week for all staff since March, demonstrating how the model can be adapted for the construction and heating industry.

The family business has released data from the first three months of their trial, showing sales growth compared to the same period last year whilst working 20% fewer hours.

Interested in working for an employer that values work-life balance? Visit: https://customheat.co.uk/careers/

Skills shortages

The trial has transformed Custom Heat’s ability to recruit and retain staff in a sector facing skills shortages. Staff turnover dropped by 67%, whilst staffing levels increased by 3.7% compared to a decrease in the same period last year. Several new recruits explicitly stated that the fourday week was critical in their decision to join.

Sickness levels fell dramatically, with 57% fewer staff taking sick days and 39% fewer days lost overall. For single parents, the impact has been particularly significant. One team member said: “For the first time, I’ve been able to pick up my daughter from school normally, rather than relying on before and after-school clubs. Seeing her face when I pick her up has meant everything.”

Managing director Lincoln Smith acknowledged the trial had presented challenges that other heating firms should consider. Administrative coverage has been more complex, and managing longer-duration jobs requires more planning. However, he believes the seasonal nature of heating work actually makes the industry well-suited to flexible working patterns.

“We’re considering a model with spring and summer four-day weeks, reverting to five days during our busier autumn and winter periods,” he explained. “This approach recognises the natural fluctuations in demand that characterise our industry.”

Employee wellbeing

The 4 Day Week Foundation’s Gold Standard accreditation, awarded in April, recognises employers who demonstrate genuine commitment to the four-day working week model whilst maintaining productivity and employee wellbeing.

Custom Heat’s results challenge assumptions about productivity in the heating sector. The data suggests well-rested, motivated engineers can maintain output levels with reduced hours, whilst the recruitment benefits offer a potential solution to the industry’s ongoing skills shortage.

Based on Custom Heat’s experience, other heating businesses considering similar initiatives should focus on several key areas:

▪ Stagger rest days – across the team to maintain full customer coverage whilst giving each employee their preferred day off.

▪ Invest in planning systems – longer-duration jobs require more sophisticated scheduling and resource allocation.

▪ Automate where possible – AI booking systems and automated follow-ups reduce administrative burden when working compressed hours.

▪ Focus on first-time fixes – reducing callbacks becomes crucial when operating with fewer working days.

▪ Seasonal flexibility – consider four-day weeks during quieter spring and summer periods, reverting to five days during peak heating season.

▪ Monitor cost-saving opportunities – fuel efficiency improvements can deliver significant economic benefits whilst supporting environmental sustainability targets.

Tom Horne, Service and Repair Manager, makes the most of his day off. Custom Heat’s four-day week has improved work-life balance for all staff.

Bradford College set to connect to net zero energy network

Work to connect Bradford College to the £70 million Bradford Energy Network is now under way, marking a move away from fossil fuels and towards achieving net zero.

The Bradford District Heat Network will use one of the largest air source heat pumps in the UK, with an annual direct carbon saving predicted to be more than 285 tonnes per year for the college. In total, buildings on the network will benefit from an 85-90% decrease in emissions, contributing to a city-wide reduction of approximately 8,000 tonnes of carbon dioxide equivalent in the first phase.

The Bradford Energy Network is set to benefit three anchor partners: Bradford College, the University of Bradford and Bradford Courts.

Pamela Sheldon, head of

Projects at Bradford College, said: “As one of the UK’s youngest cities, Bradford must be future-proofed for the next generation. Bradford College is committed to reducing its carbon footprint, and we are proud to be leading the way in this crucial work.’

“Our transition to renewable energy will benefit nearly 3,500 staff and students in two of our main college buildings and marks a major step forward in Bradford College’s sustainability efforts.”

Heat networks supply heat from a central source and underground pipes carry hot water to buildings on a network, enabling the rapid decarbonisation of heating. These networks are playing a key role in achieving the UK’s climate goals.

The pipework for the

Bradford Energy Network is due to be completed later this year. A new energy plant for the scheme will be completed next spring, with a view to the network providing heat by September 2026.

Team up with Daikin to become a D-carbonise partner

Daikin has launched its new D-carbonise Partner Status, a scheme designed to recognise and reward installer businesses that are taking steps to embrace sustainability and reduce their own carbon emissions.

The update to its Commercial Installer and Partner Programme gives commercial installers formal recognition of their drive towards net zero, while providing the tools and resources to win new projects, attract customers and stay ahead of industry changes.

Achieving the D-carbonise Partner status allows installers to signal their commitment to delivering high-calibre installations that adhere to firm quality guidelines, as well as showing that they are on a structured carbon reduction path for their business.

D-carbonise Partners can access financial support from Daikin’s Business Development Fund (BDF) for green accreditations and

funding towards developing an independently verified Carbon Reduction Plan. Additional contributions include 100% funding for Partner With Confidence services and 50% contributions towards dual-branded charity and sponsorship initiatives.

To become a D-carbonise Partner, installers must meet a set of criteria, including a verified carbon reduction or net zero plan in place and achieving at least Bronze level in the Supply Chain Sustainability School.

Membership of at least one recognised industry body such as Refcom Elite, BESA, Quidos F-Gas Premium, MCS or equivalent is also required, as well as maintaining a social value plan that demonstrates

measurable positive impacts on society and the environment.

Steve Molloy, Sustainability & Commercial Solutions manager, says: “By championing best practices and advocating for energyefficient technologies and services, our D-carbonise Partners can position themselves as trusted leaders within their field.

“Through this new addition to our partner programme, we are building a reliable network of professional contractors who drive project success and, together, demonstrate our commitment to decarbonising the whole supply chain.” www.daikin.co.uk/ en_gb/installer/partnerprogrammes/commercial. html

Ideal Heating unveils umbrella MCS scheme

Ideal Heating’s new MCS umbrella scheme helps qualified installers get heat pump-ready without the cost, complexity or paperwork traditionally associated with Boiler Upgrade Scheme-eligible installations.

Ideal InstallPRO provides fully supported access to the BUS, system design and commissioning support, a dedicated project management platform, and a seven-year warranty. Installers can start fitting

heat pumps straight after training, without having to become independently MCS certified, with everything managed via a user-friendly app, with real-time guidance and expert support.

Installers stay in control of their customer relationships, pricing and materials. The platform includes job estimation tools, branded customer portals and clear visibility across the whole install process. There are no joining

fees, subscriptions or upselling — just one fee for design and umbrella support services.

“Ideal InstallPRO represents the next step in our commitment to making low-carbon heating more accessible for installers and customers alike,” says Mark Derbyshire, managing director (Sales and Marketing) Groupe Atlantic UK, ROI & NA.

“This isn’t just about simplifying MCS: it’s about making heat pumps viable, practical and scaleable and ensuring installers have the tools, training and confidence to grow with the market. It’s part of a joined-up approach to decarbonising UK homes.”

https://idealheating.com/ ideal-installpro

Start with Grant to experience a heat pump system in your own home

Grant UK has introduced a version of Nesta’s Start at Home initiative to heating engineers in England and Wales. The new programme, Start with Grant, gives fossil fuel boiler installers who haven’t ever fitted a heat pump the opportunity to install a fully funded Grant air source heat pump system in their own home with full technical support.

Nesta’s original Start at Home initiative was created

to help build confidence in heat pump technology among installers by giving them the chance to live with the systems themselves. The aim is to develop a growing network of professionals who can speak with authority and credibility when recommending lowcarbon heating to customers.

Grant UK is delivering a version of the Nesta programme that is tailored to its products and services,

providing a complete solution from training to MCS certification through Heat Pump Go’s umbrella scheme.

Installers will receive a fully funded Grant Aerona air source heat pump, available up to 12kW, alongside a hot water cylinder of up to 210 litres, a 50-litre volumiser, a smart controller and a complete heat pump installation kit. These components are delivered directly from Grant UK to the property where the installation will take place, ensuring a smooth start to the project.

Grant UK provides in-depth technical assistance, including tailored system design and heat pump product training. Once the system is in place, on-site commissioning is arranged to ensure everything is working as expected. Installers do not need to be MCS certified to take part: Grant UK has partnered with Heat Pump Go, whose MCS Umbrella Scheme handles the

certification, making the process accessible for those still working towards MCS accreditation.

Following completion and MCS sign-off of the installation, Grant UK will also provide a £1,500 contribution towards installation costs.

The scheme opens the door to future access to BUS funding through Heat Pump Go, so that installers can offer BUS-eligible installations.

“This isn’t just about installing a heat pump,” says Anna Wakefield, head of Internal Sales and Marketing at Grant UK.

“It’s about helping installers understand the technology, build their confidence and become genuine advocates for low carbon heating. When they can speak from personal experience, it transforms how they connect with customers.”

https://www.grantuk.com/ professional/support/startwith-grant/

skillsandtraining

Stiebel Eltron expands Wirral training centre

Stiebel Eltron UK has doubled the capacity of its Wirral HQ training centre, transforming the 20,000ft2 unit to accommodate up to 32 installers at any given time.

The company’s training covers the basics of heat pump installation and gives an understanding of the industry.

For more experienced attendees, the company delivers advanced training for installers, providing them with essential skills and comprehensive technical knowledge to support the transition towards renewable heating.

As well as offering in-person courses, Stiebel Eltron provides online training with its Heat Pump Pass course for newcomers to the renewable heating sector, and its Heat Pump Pass 2 for more experienced professionals.

Gen up on commercial heating and hot water with Baxi CPD seminars

Baxi’s newest free Continuing Professional Development (CPD) accredited seminars aim to help heating professionals expand their knowledge and performance in commercial heating and hot water projects.

Accredited by the Chartered Institute of Building Services Engineers (CIBSE), three new CPD seminars are designed to support understanding of latest industry developments and learnings,

while counting towards CPD hour requirements. Participants can then apply this knowledge to boost efficiency, performance and value in their own projects to benefit their customers.

Baxi’s CPD training is tailored to suit individual business needs and can be attended online, delivered via Microsoft Teams or in person. With sessions lasting no longer than an hour, seminars can be delivered at a time that best suits you, providing greater flexibility and opportunities to ask questions for open discussion.

The first CPD, Next-Gen Heating Solutions: Hybrid Systems and Heat Decarbonisation with Air Source Heat Pumps, focuses on partial decarbonisation with air source heat pumps. It covers considerations around project

feasibility, optioneering and how to use investigative engineering to source the right solution for each project.

Heat Networks: The Impact of Increasing Standardisation and Regulation on Network Connections provides an overview of heat networks in the UK, outlining why the growth rate is accelerating, and how the CIBSE code of practice applies to heat network connections.

Hot Water Generation for Commercial and Industrial Applications gives a comprehensive overview of hot water generation technologies and system design principles. The session concludes with insights into low-carbon technologies, emerging heat trends, and best practices for hot water sizing and demand profiling.

Skills funding for Ideal Heating to support heat pump transition

Ideal Heating has received close to £1 million from Hull City Council to extend the training it provides to support the transition from boilers to heat pumps.

The Skills Bootcamp funding will enable Ideal Heating to deliver additional courses to installers through its Expert Academy training arm.

The funding will also enhance its system design service, as it helps new-build developers make a successful transition to heat pumps.

Heat pump system design is more complex than the installation of gas boilers, says the company. For example, a heat pump installed in

southern England will be specified and commissioned differently from one in Scotland, with climate and the surrounding environment both important factors to consider.

Designing, specifying and commissioning heat pumps correctly is critical to ensure they perform as efficiently as possible.

Initially, 20 Ideal Heating colleagues will undertake heat pump system design training. Once its own teams have been trained, the company plans to offer courses in heat pump system design as part of its external training provision.

Skills Bootcamp funding has previously supported Ideal

Heating’s Expert Academy training arm to retrain thousands of installers to work with heat pumps. Expert Academy trained around 3,000 installers through in-person courses in 2024 and expanded its UK footprint to 30 training facilities. www.expert-academy.co.uk

productupdate

the latest launches from around the industry

48 Mistral smart thermostat blows in from ESi Controls

48 Worcester Bosch unveils Climate 3200i air conditioning

48 Wiser gets smarter for full home automation

48 Daikin scales up Multi+ range

Compact and efficient stored hot water from Ariston

The Andris Elite WiFi is Ariston’s newest electric storage water heating offering. The successor to the Andris Lux Eco is a compact unit suitable for domestic and light commercial use, including environments that require a higher level of safety, such as hospitals, schools and care homes.

Ariston says it’s easy to install and maintain, with features including a intuitive LED interface and smart connectivity via the Ariston Net app for complete control and comfort. The unit has a sturdy titanium enamelled tank, copper heating element and faster reheat times. Once a month, it automatically raises the temperature of the stored water to 65ºC, eliminating the risk of legionella bacteria developing and keeping the water healthy. It houses an additional ABS safety package with anti-freezing to ensure reliable heating even during colder months.

The Eco Evo function learns daily usage patterns and gives hot water only when needed, resulting in reduced energy consumption and savings of up to 15% on bills.

The Wifi functionality enables convenient remote monitoring and management, including voice control and other smart controls to reduce energy consumption. www.ariston.com/en-uk/

Protect your tools from theft with SiteSafe Truckboxes

Jefferson Tools’ SiteSafe truckboxes provide heavy-duty security for tools and equipment, whether you’re on site or in a van. They are designed to withstand theft attempts through a robust steel construction that resists forced entry. The tamperproof locking mechanism provides protection against opportunistic and professional

thieves, giving tradespeople confidence that their tools are secure at all times.

“Every tradesperson knows that tool theft is a constant risk and, once your tools are gone, your ability to work is at stake,” says Darren Binns, national sales manager at Jefferson Tools.

“The SiteSafe truckboxes provide a simple yet highly effective security solution that can make all the difference. Storing tools securely in a lockable site box is exactly the kind of measure insurers look for when assessing risk.”

Jefferson Tools SiteSafe range includes six Safe, four

Site Safe, and two Agri Safe secure storage solutions. For tighter van spaces, there’s the compact 400mm model. The 570mm standard and AgriSafe variants provide a balance of size and practicality.

Each is built from heavyduty steel and coated with a tough, waterproof textured powder finish with UV protection. Standard features include shielded locking points, pre-drilled fixing holes and integrated forklift skids for easy transport, while optional 5” heavy-duty castor wheels enhance mobility. www.jeffersontools.com

Stelrad is introducing a range of 200mm and 1200mm high radiators in different sizes, ensuring that installers can choose correctly sized models for every job.

The 200mm radiators are available in K3 and K4 sizes, with three or four sets of fins and three or four panels, in 14 sizes and are floor-mounted only, supplied with feet. They come in white, have a 10-year warranty and are ideal for installations where space is limited.

The 1200mm sized radiators come in K2 format and in five sizes. They are wall-mounted only and come with a centre tap fitting, in white only.

“We’re bringing these new sizes to market to plug some of the gaps in our already comprehensive range of Compact radiators and to ensure installers and specifiers have access to the radiators they need,” says Stelrad’s head of marketing Chris Harvey. www.stelrad.com/trade

productupdate continued Worcester Bosch unveils Climate 3200i air conditioning

Mistral smart thermostat blows in from ESi Controls

Mistral is ESi Controls’ new smart programmable room thermostat to improve heating efficiency and comfort in homes with either boilers or heat pumps.

With its modern design and intuitive dial control, Mistral can be wallmounted or used with its own stand for maximum flexibility. It is available in white or grey and has a customisable home display. It’s WiFi ready straight out of the box and fully controllable via the Centro app.

Mistral uses OpenTherm technology so it works with compatible boilers and heat pumps to determine the most efficient running temperature. This ensures the heating system operates at its optimum level, reducing energy consumption and providing consistent comfort.

ESi Controls is also launching Cirrus for instances where a hardwired smart thermostat is required – for example, where a thermostat is already hard-wired into the system. Available in a white or grey wall-mounted unit, Cirrus has all the features of Mistral. www.esicontrols.co.uk

The Climate 3200i is a versatile, high efficiency air conditioning unit from Worcester Bosch, designed with homeowners and installers in mind.

Combining heating, cooling, dehumidifying and air purification, the Climate 3200i provides year-round comfort.

With outputs ranging from 2.6kW to 7kW and seasonal efficiency ratings of A++ for cooling and A+ for heating, the Climate 3200i provides flexible

performance for a range of residential applications. It brings reliable indoor comfort to help homeowners stay cool in warm weather

It’s engineered for ease of installation and service, featuring installer-friendly fittings and low-maintenance washable filters. It’s straightforward to install and maintain, with easily accessible components and simple configuration, and comes with a five-year guarantee when installed by a Worcester Bosch Accredited Installer.

www.worcester-bosch.co.uk/ professional

Wiser gets smarter for full home automation

Drayton’s Wiser system now combines smart heating benefits with a range of new smart home devices to create an all-in-one solution for home automation and efficiency.

Wiser 2nd Generation enables installers to offer their customers a smarter, more connected home, with new

products that can be incorporated. These include a smoke alarm, sensors for windows and doors, water leakage, temperature and humidity and motion, as well as micro modules for lighting dimmers, shade and power.

With management of these devices via the Wiser Home app, the new sensors provide peace of mind that homes are protected from potential risks such as fires or floods.

The Wiser 2nd Generation HubR is the brains of the new system. Available in 1, 2 and 3 channel variants, it enables

advanced heating control and, combined with the new devices, complete home automation. All elements can be controlled via the Wiser Home app, which has recently been updated with a more intuitive dashboard. This provides quick access to favourite devices for more convenient monitoring and adjustment and access to favourite modes for quicker activation. Homeowners can also get personalised tips and advice on how to reduce their energy use, shared on the new home screen.

www.draytoncontrols.co.uk

Daikin scales up Multi+ range

Daikin is expanding its highefficiency, Multi+ range to cater for bigger homes and mediumsized businesses. A new outdoor unit can be connected to up to four indoor units and floormounted domestic hot water (DHW) cylinder.

The Multi+ is quick and easy to install, says Daikin, making it an ideal replacement option for DHW and space heating systems where air conditioning is also a requirement. The new outdoor unit and DHW cylinder provide the Multi+

system with greater flexibility.

It is available with a nominal capacity of 6.8kW or 9.0kW in cooling and 8.60kW or 10.00kW in heating. Increased capacity ensures flexibility tailoring indoor climate needs.

In addition to the larger outdoor unit, Daikin is introducing

a 230L floor-mounted DHW cylinder. This complements the 120L wall-mounted DHW cylinder, giving customers the option to select the best fit for their household or business requirements.

Multi+ is supported on Daikin’s Onecta app which is compatible with Amazon Alexa and Google Assistant. This enables the scheduling, control and monitoring of individual indoor units and the domestic hot water system.

www.daikin.co.uk

· All ACS Domestic Gas – core + appliances

·All ACS Commercial Gas including CMDDA1 and BMP1

· Unvented Hot Water & Water Regs

· Highly knowledgeable trainers with years of experience

· Very friendly training environment

4 Ashgrove Industrial Estate Ashgrove Road, Bromley Kent, BR1 4JW BTAAC offer a full range of Domestic and Commercial Gas training and assessments in a well-equipped training facility at very competitive prices.

Telephone: 0208 315 5678

Training & Assessment Centre (BTAAC)

stcg.ac.uk/carshalton-college/gas admissions.carshalton@stcg.ac.uk

Rd, Carshalton SM5 2EJ 020 8544