Professional Heating and Plumbing Installer September 2026 by Hamerville Media Group

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SEPTEMBER 2026

PLUMBING & BATHROOMS

WETROOM DRAINAGE

ROOM HEATING ASHP INSTALLATION

LIGHT COMMERCIAL WASHROOM RETROFITS

VISIT PHPIONLINE.CO.UK FOR REGULAR UPDATES AND EXCLUSIVE CONTENT

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CONTENTS @phpi

phpionline.co.uk

@professionalplumber

September 2026 VOL. 41 NO.7 phpi@hamerville.co.uk

@phpimag

REGULARS

46 SILICONE

5 VIEWPOINT 6 NEWS 12 NEWS REPORT 42 HORROR SHOW 44 TOOLFAIR PREVIEW 51 PLAYTIME

SPECIAL REPORT 14 TRAINING GROUND

PHPI catches up with a plumber turned Heat Pump Trainer

INDUSTRY INSIGHT

16 Q&A // ASHP CONDENSATE REMOVAL

DiversiTech provides some thoughts on condensate removal from ASHPs

PLUMBING & BATHROOMS

24 Q&A // PUMP SOLUTIONS FOR WETROOMS The importance of selecting an appropriate pump

26 ENABLING SUSTAINABILITY

Some plumbing innovations that could help drive sustainability

28 FAQ // EXPANSION VESSELS

Expansion vessels’ role in the operation of sealed heating and hot water systems

LIGHT COMMERCIAL

A PATH 18 HEAT PUMPS 32 FINDING Greg Brushett from Adveco provides

ROOM HEATING

18 TIPS FOR BETTER ASHP RESULTS

Ian Trott from Baxi identiﬁes some key areas to consider.

20 THE HEAT PUMP HANDOVER

Ensure homeowners can get the very best from their heat pump

22 APPROACHING DECARBONISATION

Malcolm Farrow from OFTEC asks if the UK is too academic with its approach to decarbonisation

some thoughts on Commercial Gas Water Heating

40 UNBLOCK DRAINS 34 RECOGNISING THE RISK

Steve Dunning from Martindale Electric outlines some Legionella risks

36 FLUSH WITH OPPORTUNITY

Washroom retroﬁts and water efficiency

TOOLS & EQUIPMENT 38 TOOL TRAINING

33 FAMILY EXPANSION

An R290 option has been added to Daikin’s CZ commercial heat pumps

38 TOOLS &

EQUIPMENT

Effective training can help maintain robust standards

40 CLEAR THE WAY

A look at the RIDGID K-46 SinkSnake

PRODUCT ROUND UP 43 Sentinel’s X100 InstaDose 45 WELD-ON's 717 Eco 46 Sealant, UFH, Heat Pumps & more...

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VIEWPOINT

phpionline.co.uk EDITOR JONATHAN COLE phpi@hamerville.co.uk ADVERTISEMENT MANAGER OLIVER SHANNON oshannon@hamerville.co.uk REGIONAL MANAGER PAUL FITZGERALD pfitzgerald@hamerville.co.uk DIGITAL MANAGER KELLY NEWSTEAD DESIGNER GEMMA WATSON GROUP PRODUCTION MANAGER CAROL PADGETT PRODUCTION ASSISTANT CLAIRE THWAITES DISTRIBUTION MANAGER KARL CLARK PRINTED BY PCP TELFORD PUBLISHED BY HAMERVILLE MEDIA GROUP Regal House, Regal Way, Watford, Herts WD24 4YF. Tel: (01923) 237799 Fax: (01923) 246901 Copyright © 2026 PROFESSIONAL HEATING & PLUMBING INSTALLER is a business journal for those involved in the installation, maintenance and repair of heating and plumbing systems. It is available to the trade at leading heating and plumbing merchants and specialist outlets throughout the UK.

@phpi

@professionalplumber

phpi@hamerville.co.uk

Water saving During the summer many parts of the UK experienced high temperatures together with long periods of sustained dry weather. In some areas of the country weather warnings were issued and, for some, hosepipe bans or calls for water conservation were introduced. The general state of the country’s water supplies became headline news. And, with some forecasters predicting this type of summer could become more frequent, many thoughts turned to the resilience of our water system. Whilst dealing with wider infrastructure issues may not be the central remit of plumbers, individuals and businesses throughout the sector can help customers put adequate systems in place to help reduce water usage and, in particular, water wastage. Figures from Waterwise, a not-for-profit organisation supporting water efficiency, indicate that toilet use is around 25% of all household water and leaky loos alone can waste up to 400 litres per day. Identifying and fixing leaks, whether in loos or elsewhere, could help to save large amounts of water. Providing consumers with information on water usage can also help them become more efficient. Showers are more water efficient than baths, and low-flow shower heads can take savings even further. Dual flush toilets use around 4-6 litres per flush, while older models can use up to 13 litres. In the garden, outside taps which drip could be replaced with newer versions. Waterwise notes that a tap dripping at a rate of 1 drip per second loses over 12,000 litres per year. The organisation says that further savings can also be found in the kitchen. When it comes to commercial buildings, newer technology for urinal flushing can save large amounts of water over older, auto-flush cisterns. In commercial washrooms, dripping taps can also contribute to water wastage, while sensor taps only operate when someone is there. (You can find out more about water efficiency in commercial buildings on page 36) Plumbers are well placed to advise customers, both domestic and commercial, on water efficiency and measures that can be implemented to help buildings become more efficient. And, for those on water meters, enhanced water efficiency could also translate into welcome financial savings.

Jonathan Cole

EDITOR

The publishers and editor do not necessarily agree with the views expressed by contributors, nor do they accept responsibility for any errors of translation in the subject matter in this publication. Subscriptions to PHPI are available for 1 year (11 issues) at the following rates: UK £30 post paid Airmail £99 post paid Europe £70 post paid

60,213 (Certiﬁcate of Average Distribution for the issues between January and December 2025)

For the latest news, plus video reviews, competitions and exclusive content, log on to the PHPI website at WWW.PHPIONLINE.CO.UK

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News

Share your thoughts with us on the industry via X (@PHPI), Facebook (@ProfessionalPlumber), or by emailing phpi@hamerville.co.uk

IDEAL HEATING LAUNCHES LIFETIME WARRANTY FOR LOGIC AIR HEAT PUMPS WOOD FUEL AND HEATING ASSOCIATION TRADE BODY LAUNCHED A new industry body has been established to provide coordinated representation for the UK wood fuel and heating sector. The Wood Fuel and Heating Association (WFHA) says it will bring together organisations from across the supply chain to support informed engagement within policy and regulatory discussions, while also encouraging collaboration, high standards and greater coordination across the industry. It also aims to advocate the benefits of sustainable wood heating to the UK economy. Commenting on the launch of the association, Terence McCracken, Chairman of WFHA, said: “The wood fuel and heating sector already makes an important contribution to renewable heat in the UK, yet it has not always had clear or coordinated representation within wider policy discussions. “At a time when conversations around energy policy, sustainability and long-term heat security are becoming increasingly important, it is vital that decisions are informed by practical operational experience and a proper understanding of the sector itself.”

Ideal Heating has launched a Lifetime Warranty for its Logic Air heat pumps, which the company says sets a new benchmark for long-term customer support, and reinforces its commitment to raising standards and building confidence across the low-carbon heating market. Available exclusively on Ideal’s Logic Air heat pumps installed alongside an Ideal cylinder and Halo Air controls, the new proposition combines annual servicing, ongoing warranty and manufacturer support. With information given to them through their Ideal installer, homeowners can sign up within six months of installation through a monthly subscription of £22.50, or an annual payment of £270, giving them access to ongoing manufacturer-backed support throughout the life of their heating system. Installers who want Ideal Heating to provide ongoing servicing and support can recommend Lifetime Warranty for their customers. Those who prefer to retain the servicing relationship themselves can continue to do so through Ideal Heating’s Extended Warranty options. The company says this ensures they remain in control of their customer relationships while benefiting from the reassurance of manufacturer-backed support. Adam Foy, Chief Executive Officer at Ideal Heating, said: “We didn’t want to launch just another warranty. We wanted to redefine what long-term ownership of a heat pump should look like.”

CAMPAIGN FOR MANDATORY LICENSING OF BUILDERS CONTINUES The Federation of Master Builders (FMB) has welcomed a new report from Citizens Advice, which, it says, adds fresh weight to the FMB's long-running Licence to Build campaign for mandatory licensing of builders. The report called ‘Built to Fail: How the home repairs market is failing consumers’, finds that more than a quarter (28%) of people who hired a trader for home repairs or improvements in the last 18 months experienced a problem, with those who lost money losing a median of £750, with 11% losing more than £5,000. The FMB says the findings echo its own research which found rogue and cowboy builders have cost UK consumers an estimated £14.3billion over the last five years. Brian Berry, Chief Executive of the FMB, said: "This report confirms what we've been saying for years — that consumers are being let down by a fragmented, voluntary system that simply isn't fit for purpose. We've long called for mandatory licensing, and it's encouraging to see Citizens Advice reach the same conclusion. Now government needs to act. Every week without action is another week that vulnerable homeowners are exposed to rogue traders."

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REPORT FINDS 93% OF UK TRADESPEOPLE SAY RUNNING THEIR BUSINESS IS STRESSING THEM Ninety-three per cent of UK tradespeople experience stress or anxiety from running their business, according to a new report. The NOW Report: National Outlook on the Trades Workforce 2026, commissioned jointly by Powered Now and Installer and carried out by independent research company Fusion Insight & Strategy, surveyed 140 heating engineers, plumbers, electricians, builders and other tradespeople across the UK during June 2026. The survey found that business admin – quoting, invoicing and chasing payments – takes an average of five hours and 20 minutes a week, much of it done in the evenings or at weekends. More than half (52%) haven’t taken a week’s holiday in the past 12 months. Benjamin Dyer, CEO and Co-Founder of Powered Now, said the findings reflect conversations the company has with tradespeople every day. “Nobody gets into this business because they love the paperwork,” said Dyer. “They get into it because they’re good with their hands, because there’s real satisfaction in doing a job well.” To see the full NOW Report please

www.rdr.link/pcc001

NEW INDUSTRY GUIDE EXPLAINS G3 COMPLIANCE FOR UNVENTED HOT WATER SYSTEMS The Hot Water Association (HWA) and HPA UK have published a new technical guide to help installers, specifiers and manufacturers navigate the regulatory requirements for unvented hot water systems with the continuing transition to low-carbon heating. The publication, ‘Unvented Hot Water Systems: Regulatory Compliance Explained’, addresses some of the most frequently asked questions surrounding the regulations and requirements of Approved Document G3 and the Water Supply (Water Fittings) Regulations to modern hot water installations. The organisations say it has been developed in response to growing need for clearer guidance for all unvented cylinder installers, including those in heat pump systems. Although heating technologies are evolving, the guide makes it clear that the regulatory framework governing unvented hot water systems has not changed. Stewart Clements, Director of the Hot Water Association, said: “The growth of heat pumps has raised understandable questions about how existing regulations apply to new system designs. This guide has been developed to explain to installers and specifiers how Approved Document G3 and the Water Regulations should be interpreted in today’s market.”

REDESIGNED WEBSITE INTRODUCED BY TRIANCO Trianco has unveiled a redesigned website created to support the day to day needs of heating engineers, installers, industry partners, and specifiers. The company says the new site brings together product access, technical support, and professional resources in one easy to navigate digital hub. The website includes sections for Installers, Distributors, and New Build and Social Housing professionals. The new Support section provides instant access to downloadable installation manuals, technical documentation, product specifications, FAQs and troubleshooting advice designed to ensure engineers have the right information at their fingertips, whether they’re on site or planning an installation. Additionally, installers can now register products online, helping streamline warranty administration while ensuring customers receive full manufacturer support. The company says this function also supports compliance and record keeping for professional installers.

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DAIKIN TO OFFER CITY & GUILDS ASSURED HEAT PUMP TRAINING POLYPIPE BUILDING PRODUCTS ANNOUNCES NEW POLYPLUMB ENHANCED AMBASSADORS ®

Polypipe Building Products has announced Cary Rudd and Livvi Hodges as its new PolyPlumb® Enhanced Ambassadors for 2026. The company says the move recognises their dedication to the plumbing and heating industry and their commitment to supporting the next generation of installers. The pair were unveiled as this year’s ambassadors during InstallerSHOW 2026, following a competitive application process. Entries were reviewed and scored by a judging panel against a set of criteria designed to identify individuals who demonstrate technical excellence, enthusiasm for the trade, and a commitment to championing the industry. The PolyPlumb® Enhanced Ambassador Scheme was launched in 2025 to help support apprentices and early-career professionals entering the plumbing and heating sector. Jason Nightingale, Head of Marketing at Polypipe Building Products, said: "The PolyPlumb® Enhanced Ambassador Scheme was created to support and celebrate emerging talent within the sector. As an industry, we need to continue attracting and developing skilled individuals, and both Cary and Livvi are fantastic examples of the people helping to drive the profession forward.”

Daikin has partnered with City & Guilds to achieve ‘Assured’ status for its Altherma heat pump training package. The partnership delivers independently assessed training for heating engineers across the UK, designed to support professionalism and building confidence in the growing heat pump market. Sam Egerton, Head of Recognitions for City & Guilds commented: “Achieving City & Guilds Assured status shows that an organisation meets exacting quality standards in terms of course structure, delivery and quality management. Throughout the accreditation process, Daikin consistently demonstrated a clear commitment to excellence in training, with a comprehensive and well-structured offering that aligns strongly with the standards we expect from Assured programmes. We were particularly impressed by the focus on practical skills development and supporting installers with the knowledge and confidence needed to succeed in the growing heat pump sector.” Daniel Jackson, UK Training Manager at Daikin, commented: “At Daikin, we are committed to providing the highest quality training possible for our installer customers, ensuring they have the skills, confidence and technical expertise to deliver outstanding heat pump installations. Achieving City & Guilds Assured status for the training courses is a significant milestone because it gives installers an independently recognised credential that helps them stand out in a rapidly growing and increasingly competitive market." Upon successful completion of the Altherma Heat Pump training package, engineers will be able to call themselves a Daikin Altherma Heat Pump Technician.

GRANT UK UPDATES PRODUCT SELECTOR TOOL Grant UK has updated its online Product Selector Tool to help homeowners find their new heating system. From oil-fired boilers and air source heat pumps through hybrid heating solutions and complementary technologies, this digital resource suggests to consumers the Grant heating products which could be suitable for their home. After using the Product Selector Tool, homeowners can either continue their research on the Grant UK website or they can request to send a copy of the Grant products listed in their results straight to their inbox for future reference. “There is a lot of choice across the Grant product range so our new Product Selector Tool will make it easier for homeowners to find the right Grant heating products for their home,” explained Anna Wakefield, Head of Internal Sales and Marketing at Grant UK. “Every home is different and this is why it is important that consumers have choice when it comes to changing their heating system, whether that is installing a HVO compatible Vortex oil-fired boiler, an energy-efficient Aerona 290 air source heat pump or transitioning to renewable heating with an EvoLink Smart Hybrid System Hub. “The upgrades we have made to our online Product Selector Tool will help homeowners during the early stages of researching their next heating system, suggesting suitable heat sources and, when required, complete package solutions. They can share their results with local G1 Installers who will then provide in-depth support to specify a new Grant heating system.”

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BAXI HELPS INSTALLERS COVER THE COST OF GAS SAFE RENEWAL Baxi is helping installers take care of their Gas Safe renewal with a new promotion that rewards installers with enough Baxi Works points to cover its cost. Running until 30 September 2026, the promotion gives installers 6,250 Baxi Works points – equivalent to £187 – when they install and register five qualifying Baxi 600 or 800 boilers through Baxi Works. How it works: ● Install and register 5 Baxi 600/800 boilers between 1st July and 30th September 2026. ● Receive 6,250 bonus Baxi Works points once you qualify at the end of the promotional period. Rob Pearse, Residential Business Director at Baxi, said: “When we speak to installers, they're often less interested in flashy prizes and more interested in things that genuinely help them run their businesses. Gas Safe registration is one of those costs every engineer has to budget for, because it's fundamental to their livelihood. “This promotion is about recognising that reality. It's a simple way of helping installers cover an essential cost while rewarding them for choosing Baxi. That's exactly what Baxi's Got You is all about, backing installers with support that's relevant to their day-to-day lives.” *Terms & conditions apply

HPA UK OPENS ANNUAL CONFERENCE TICKET REGISTRATION Industry leaders in the heat pump sector are to gather at the British Library for the annual conference of HPA UK as the organisation approaches its first anniversary as the newly merged association. HPA UK has announced that tickets are now on public sale for its 2026 annual conference, titled, ‘Driving the heat pump market: From ambition to delivery.’ The keynote speaker has been confirmed as Paul Kenny, Director General of the European Heat Pump Association (EHPA). The event takes place on 2nd December 2026 at the British Library, London.

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SNICKERS WORKWEAR NAMES BAND OF BUILDERS AS CHARITY PARTNER

Snickers Workwear has announced a new charity partnership with Band of Builders, which will see the organisations work together on a range of initiatives designed to raise vital funds and support for construction workers and their families facing challenging circumstances. The brand says it will also provide free workwear for hundreds of volunteers as they carry out charity projects across the UK. Ben Stacey, UK Sales Manager, Snickers Workwear commented: "The construction industry is built on teamwork, resilience and looking out for one another. Band of Builders embodies those values every day through the incredible support it provides to people facing difficult circumstances. We are proud to name Band of Builders as our chosen charity and look forward to working together on a range of initiatives that will make a real difference to construction workers and their families." Gavin Crane, CEO, Brand of Builders adds; "We are incredibly proud to be partnering with Snickers Workwear, a brand that is trusted and respected by construction workers across the UK. At Band of Builders, our mission is simple, to support members of the construction industry and their families when life takes an unexpected turn.”

MITSUBISHI ELECTRIC LAUNCHES MCS UMBRELLA SCHEME Mitsubishi Electric has announced a new collaboration with Alto Energy aimed at helping heating engineers expand into the heat pump market through a simplified MCS umbrella scheme. The scheme is designed to remove many of the barriers that can prevent experienced gas boiler installers moving into heat pump installations, by providing access to training, technical support, MCS-compliant system design and commissioning. Through the scheme, installers can benefit from MCS-standard project design and commissioning, automatic grant applications and ongoing technical guidance. Joanna Crown, Product Marketing Manager at Mitsubishi Electric (pictured), said: "We know there are thousands of highly skilled heating engineers across Britain who are looking to take advantage of the growing heat pump market. Our collaboration with Alto Energy provides a straightforward pathway into renewables, combining training, technical support and MCS compliance to give installers the conﬁdence to start installing heat pumps and to growing their businesses." Under the scheme, installers submit project details to Alto Energy, which then provides a bespoke system design and quotation. Once the installer completes the installation, Alto Energy commissions the system to MCS standards, provides sign-off and, where applicable, manages government grant applications and associated paperwork. For more information please

www.rdr.link/pcc002

VOKÈRA ROLLS OUT FREE BOILER INSTALLATION AND COMMISSIONING COURSES Vokèra has launched a series of free training opportunities for installers looking to work with its range of heating solutions. The company says the courses will provide installers with easy access to free training both in-person or online. Consisting of online webinars and in-house training days, the courses cover installation, commissioning and fault finding, and are designed to help installers keep up-to-date with advancing technologies and practices to widen their knowledge, build their confidence on installs and have the opportunity to ask questions to the Vokèra’s technical team. “In our view, training remains fundamentally important for installers. It’s essential for those who wish to keep up to speed with the latest gas boiler, renewable and control products on the market as well as the installation procedures and best practice, which can help them save time and money on site. We take great pride in the quality of our training courses to deliver real value for the installer, so they leave feeling completely confident about installing and attending our products,” said Neil Mattock, Marketing Director, Vokèra. Vokèra is holding the training courses at two locations; at the Riello Training Centre, Huntington, Cambridgeshire, and at the Innovo Training Centre in Glasgow. For those that cannot attend the training centres or commit to full days of training, Vokèra offers online live courses via webinars.

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NEWS REPORT

INSTALLER AWARDS CROWNS 2 0 26 The UK’s top Heating Installers and Plumbers have been recognised, together with a Rising Star and Renewables installer. HIA 2026 winners (L-R) Daisy Turner, Daniel Davies, James Lacey, George Tiefenthaler, Adam Dare

Heating Installer Awards 2026 ● National Winner Daniel Davies, Daniel Davies Plumbing and Heating Engineers (Wales) ● Highly Commended Adam Dare, Eco Renewables Ltd (Berkshire) ● Rising Star Winner Daisy Turner, Toucan Heating and Plumbing Ltd (Essex) ● Best HVAC Installer James Lacey, JLN Plumbing and Heating (Coventry) ● Best Renewables Installer George Tiefenthaler, POP Heating and Renewables (Northampton)

Winners

he UK's leading heating and plumbing professionals have been recognised at the Installer Awards 2026, with national winners announced live at InstallerSHOW at the NEC Birmingham. The Installer Awards brings together the Heating Installer Awards and the inaugural Plumber Awards under one umbrella This year's top honours went to Wales-based heating installer, Daniel Davies, and London plumber, Louchavan Lemard, who were crowned the UK's Heating Installer of the Year and ﬁrst-ever Plumber of the Year respectively. Daniel Davies, of Daniel Davies Plumbing and Heating Engineers from Lampeter, secured the Heating Installer Awards national title after impressing judges with his work on a 200-year-old stone farmhouse that had stood abandoned for almost a century. Faced with a completely blank canvas, Daniel designed and installed a high-performance renewable heating system focused on efficiency, reliability and long-term durability. The win marks an impressive milestone for Daniel, who had already retained his Welsh regional title for a third consecutive year.

Plumber Awards Louchavan Lemard, co-founder of PH247 Ltd, was named the inaugural winner of The Plumber Awards. Judges praised his technical expertise, commitment to customer service and ability to deliver practical solutions that make a meaningful difference to homeowners. Daniel and Louchavan take home prize bundles worth thousands of pounds. Daisy Turner of Toucan Heating and Plumbing Ltd, was named Rising Star of the Year. The Essex-based apprentice impressed judges with both her technical ability and her wider contribution to the industry.

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Plumber Awards 2026 winners (L-R) Steve Gray, Louchavan Lemard, James Bell-Taylor

The Plumber Awards 2026 ● National Winner Louchavan Lemard, PH247 Ltd ● Silver Winner James Bell-Taylor, JBT Plumbing and Heating Ltd ● Bronze Winner Steve Gray, Steve Gray Gas Services Ltd Laura Mashiter, Installer Awards founder, said: "The standard of entries across both the Heating Installer Awards and the inaugural Plumber Awards has been outstanding. Our winners have demonstrated not only exceptional technical expertise, but also the professionalism, problem-solving skills and customer-ﬁrst approach that are helping to drive standards across the industry.” If you would like to enter the awards for 2027, pre-registration is now open. Heating Installer Awards – please www.rdr.link/pcc003

Plumber Awards – please www.rdr.link/pcc004

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SPECIAL REPORT

Q& A

TRAINING GROUND

Training remains vital to the growth of the low carbon heating market. PHPI caught up with Steve Clark, a plumber turned Heat Pump Trainer at Mitsubishi Electric, to find out more about his role.

How did you originally get into the heating sector?

I’ve always had a fascination with solving problems and making a meaningful impact, particularly when it comes to ﬁxing something people rely on every day – and that includes the technology that heats their homes. In the early days of my career, where I specialised in domestic gas heating and plumbing, I quickly realised how important good fault-ﬁnding skills are. That’s what ultimately drew me to the heating sector; no two days on the job are ever the same. The UK’s broader transition to low-carbon heating also means the industry is changing rapidly, and I wanted to be a part of that change.

What kind of work were you undertaking on a day-to-day basis? I initially trained as a plumber, before joining my current role as a Technical Trainer at Mitsubishi Electric. Previously, I would spend most of my time driving from site-to-site, being on call and helping people when their heating system was on the blink. This was particularly frustrating as I knew the issue could’ve been prevented at the time of installation. That’s why I wanted to pivot and take on a more proactive role, helping people design the whole heating system from start to ﬁnish. Doing so meant retraining and applying my existing skills and knowledge to a completely new range of technology, which has transformed my understanding of heating and how to design it for people’s homes.

Why did you decide to move away from domestic plumbing & heating and become a heat pump trainer?

Steve Clark

While I’ve been in the sector for a number of years, my predominant reason for becoming a heat pump trainer was the speed at which the heating industry was beginning to change. It’s pretty clear that the future of home heating is heat pumps and low-carbon solutions. So, rather than waiting to play catch-up in a few years, I wanted to develop the skills and experience that would allow me to stay ahead of the curve and support the wider transition to renewable heating in people’s homes.

What does an average working week now look like?

My job essentially involves delivering training for installers – and a big part of that is taking niche and complex information and making it more accessible. This lets me not only coach engineers but boost their conﬁdence in their ability to retrain with heat pump systems. Generally, a typical day involves helping engineers with technical questions, running practical training sessions and getting hands-on with installations. This could also entail work on wiring schematics, commissioning guides, or creating interactive learning resources. One key difference from my previous job was moving from being practically

14 SEPTEMBER 2026 PROFESSIONAL HEATING & PLUMBING INSTALLER

based to working in an office. While being on call gave me more ﬂexibility, the structure of a 9-5 is a much better ﬁt for me. I spend considerably less time commuting between projects each week and overall enjoy a healthier work-life balance.

Where do you see the heating industry in five years’ time? It’s difficult to predict exactly where the heating industry will be in five years’ time, but it’s clear that the sector will continue to evolve – whether that’s with more financial support for homes and businesses looking to make the switch, improved consumer confidence in adoption, or more innovative system design for people’s homes. Beyond 2030, I also hope to see more young people being brought into the industry – particularly through accessible apprenticeship opportunities. Upskilling the existing workforce will also remain a key part of the solution. Experienced engineers already have highly transferable skills but need practical, accessible training that helps bridge the gap between traditional heating systems and low-carbon technologies. Connecting new principles to the existing knowledge engineers already have will enable them to make the switch – and support broader heat pump adoption across homes, businesses and the wider economy. For more information on Mitsubishi Electric please www.rdr.link/pcc005

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INDUSTRY INSIGHT

Q& A

ASHP CONDENSATE REMOVAL

Luke Parry, Area Sales Manager at DiversiTech International, provides some thoughts on condensate removal from Air Source Heat Pumps.

Why is some form of condensate removal required with an Air Source Heat Pump?

What options are available for installers?

During normal operation, an air source heat pump can generate significant amounts of condensate from the outdoor unit, with volumes varying according to system usage and ambient humidity levels. As the unit extracts heat from the outside air, moisture naturally condenses and accumulates on the heat exchanger. If this condensate is not correctly drained, it can accumulate around the base of the unit, potentially leading to property damage, creating slip or ice hazards, and increasing the risk of system faults or damage caused by water build-up.

Installers typically have two main options for managing condensate discharge: directing it to a dedicated soakaway or connecting it to the property's wastewater drainage system. To support effective drainage, the external unit should be installed on a raised base, allowing condensate to flow away naturally under gravity. This helps prevent water from pooling around the unit, reduces the risk of ice formation, and avoids water collecting on adjacent pathways or surfaces.

If the condensate is not effectively drained it can collect around the unit creating slip or ice hazards

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ASHP-SOAK

What are the benefits of the ASHP-SOAK from DiversiTech?

The material inside ASHP-SOAK

The ASHP-SOAK is a purpose-designed, pre-bagged soakaway that provides a simple and effective solution for disposing of condensate from domestic air source heat pumps where access to a suitable drainage connection is not available. Suitable for use with all domestic heat pump brands and models, it is constructed from a geotextile material that helps prevent soil ingress and maintain long-term performance. The unit features a 32mm inlet and is capable of handling condensate volumes of 10–15 litres per hour. It also supports compliance with MIS 3005 installation requirements and is designed in accordance with BRE 365 guidance.

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Do you have any installation advice?

Before installing the ASHP-SOAK, identify the condensate discharge route from the heat pump and select the most suitable location for the soakaway. To minimise the risk of moisture affecting building foundations, the soakaway should be positioned at least 600mm from any wall. The ASHP-SOAK is designed to be installed within an excavation approximately 500mm deep and with a minimum diameter of

Before installing the ASHP-SOAK, identify the condensate discharge route from the heat pump and select the most suitable location for the soakaway.

drainage through the wastewater drain. It needs to be routed through an independent soakaway.

Does the DiversiTech ASHP-SOAK meet appropriate regulations?

Identify the condensate discharge route from the heat pump unit and position ASHP-SOAK 600mm from the wall.

400mm. When positioning the unit, ensure the 32mm inlet faces towards the property to facilitate connection to the condensate discharge pipework. Whether the heat pump is ﬂoor-mounted or wall-mounted, the condensate pipework should be routed from the unit and securely connected to the soakaway to allow for effective drainage. Please note: If the air source heat pump uses R290 refrigerant, you cannot route

The ASHP-SOAK supports compliance with MIS 3005 installation requirements and is designed in accordance with BRE 365 guidance. It is suitable and compatible with all domestic air source heat pump brands and models.

To watch an installation video for the ASHP-SOAK www.rdr.link/pcc006 please or scan the QR code. For more information please www.rdr.link/pcc007

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ROOM HEATING & UFH

3 TIPS FOR BETTER ASHP RESULTS Ian Trott, Head of Training at Baxi, identifies some areas to help deliver excellent customer satisfaction with the installation and performance of ASHPs.

eat pumps and boilers have more in common than people assume. The skills built up over years of gas work transfer across well, and most heating engineers already have the foundations they need to make a start. The system, the radiators, the pipework calculations: it's all familiar ground. Where things change is in the detail. A handful of common areas that, with small changes in approach, can offer big improvements to customer satisfaction.

Tip1

Piping size matters Heat loss calculations are the foundation of any good heating system design, whether connected to a gas boiler or a heat pump. That part of the process is the same. The differences come in what you do with the result.

ASHPs run at lower flow Ian Trott temperatures than traditional boilers, so the heat coming out is less intense. To heat the same space, you need more surface area. That might mean upsizing radiators or bringing underfloor heating into the picture. Either way, the heat loss numbers have to flow through to the emitters you choose. Pipe sizing matters just as much. Heat pumps push water around faster than a boiler, so larger pipes are often needed. That sounds simple enough, but it has knock-on effects. Routing 28mm or 32mm pipe through joists takes more careful planning than smaller bore pipe and getting this right at the planning stage lays the groundwork for a happy customer. There's a related point on retrofits. With a boiler swap, dropping a 30-kilowatt (kW) unit where a 28kW one used to sit will

usually be fine. ASHPs aren't quite so forgiving. If the existing pipework can't carry the flow rates required, the system won't perform the way it should, so it’s important to take the time to size things properly. Skipping this step creates problems that many homeowners will notice straight away, and rectifying these problems adds time spent to a job and eats into profits.

Tip2

A different running strategy for ASHPs The biggest mindset shift, both for installers and homeowners, is how an ASHP is run. Today’s gas boilers are low content, meaning they hold smaller quantities of water than older models. These boilers

Heat loss calculations are the foundation of any good heating system design, whether connected to a gas boiler or a heat pump. 18 SEPTEMBER 2026 PROFESSIONAL HEATING & PLUMBING INSTALLER

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heat the water as quickly as they can bringing it up to temperature quickly. The whole approach is built around high heat and quick transfer of that heat into a home. ASHPs work the opposite way. They keep a larger volume of water moving steadily at a lower temperature, ticking along gently for longer rather than ﬁring up on a short cycle. That's where controls come into their own. Weather compensation is standard on virtually all ASHPs, adjusting ﬂow temperature based on conditions outside the home rather than reacting only to the room thermostat. Installers need a clear picture of how the homeowner is going to use the system, helping them to set up the system to match. This can be one of the more rewarding parts of working with heat pumps. There's more nuance to the system, so the choices made during commissioning have a bigger impact for homeowners, and the technology rewards a good install rather than a rushed one.

Tip3

A thorough handover is crucial With a new boiler, most homeowners can get by with a brief explanation. ASHPs are different, and assuming the homeowner will ﬁgure it out is one of the most common

Follow-up contact tends to pay for itself. A quick call or visit a few weeks in catches small issues before they become complaints and gives the homeowner a chance to ask the questions they didn't think of on the day of the handover. That second conversation is often where conﬁdence in the system gets built. This might be the biggest difference for installers. The handover hasn't always been needed in the same way, but with ASHPs, it’s a priority. It's what protects the install, the customer relationship and, in the end, your reputation as the engineer who ﬁtted it.

The takeaway reasons a perfectly good install ends up generating complaints. To combat this, installers can plan the handover as part of the job, not as an afterthought. It is best practice to walk the homeowner through how the system works, why it runs the way it does, and what they should and shouldn't do once you've left the site. Talking them through the controls in detail enables them to understand the differences between their new system and the gas boilers they are used to. It helps to make it clear they don't need to switch the system on and off like a boiler and explain what they'll see across different seasons.

ASHP installations aren't a leap into the unknown for an experienced gas engineer. The fundamentals of gas installations carry across. Applying the same care that goes into a good boiler install, with a sharper focus on planning, sizing, commissioning, and handovers, will improve how the system performs day-to-day and help ensure the customer is satisﬁed. Done well, ASHP work opens up a growing and rewarding part of the heating sector, and gives engineers the chance to deliver work that makes a difference to the homes they're in. For more information please www.rdr.link/pcc008

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ROOM HEATING & UFH

THE HEAT PUMP HANDOVER

A successful heat pump installation doesn't end when the system is commissioned. The handover process plays a critical role in ensuring homeowners understand how to operate their new heating system effectively. Hamid Salimi, Residential Product Manager at Daikin, explores why installers and manufacturers must work together to improve the customer handover experience, build confidence in the technology and ensure homeowners can get the very best from their heat pump.

he latest increase to the Boiler Upgrade Scheme (BUS) grants, up to £9,000 for homes currently heated by oil or LPG, is a signiﬁcant moment for professional heating and plumbing installers as well as manufacturers. It substantially lowers the ﬁnancial barrier to adoption for the end-user and signals a clear, unwavering direction of travel from the government: heat pumps are central to the UK’s decarbonisation of home heating. However, with this larger target market comes a more pressing, practical challenge for the workforce on the ground. As we transition from early adopters to the mass market, we are encountering consumers whose intuitive habits are exactly the wrong approach for a heat pump, creating a mismatch between expectation and reality where dissatisfaction breeds.

Root cause Recent research has highlighted an important consideration regarding grid

impact and efficiency: heat pump performance is influenced by how systems are used in day-to-day operation. This underlines the need for installers and manufacturers to work more closely with customers, providing clear guidance and ongoing support to help them get the best from their systems. Improving understanding and addressing common misconceptions will be key to enhancing customer satisfaction and strengthening confidence in heat pump technology. When a homeowner is dissatisfied with

Heat pumps are engineered to maintain a steady, low-temperature environment rather than deliver rapid heat from a cold start.

20 SEPTEMBER 2026 PROFESSIONAL HEATING & PLUMBING INSTALLER

their heat pump it is often due to a breakdown of support at the point of handover, and in the crucial weeks and months that follow the initial installation. A brief walkthrough on the day of installation is rarely sufficient, as homeowners arrive with expectations shaped by a lifetime of gas boiler use: turn it up, get heat quickly, and turn it off when you leave. Heat pumps are engineered to maintain a steady, low-temperature environment rather than deliver rapid heat from a cold start. When occupants override settings, increase flow temperatures, or switch the system completely off when they go out (typical behaviours deeply learned from traditional gas boiler usage), system efficiency drops significantly. Homeowners who do not understand how to operate their system correctly will experience higher-than-expected energy bills, leading to disappointment and frustration. Negative reviews and social media complaints follow, eroding public confidence in heat pump technology at

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precisely the moment when the industry needs to be building it. Avoidable callbacks and aftercare queries also place unnecessary strain on installer and manufacturer support teams. In these scenarios, the technology has not failed; the homeowner simply has not been told how to use it properly.

Closing the handover gap The solution is not complicated, but it does require commitment from both sides of the supply chain. Installers and manufacturers need to work together to deliver a solid handover process and a joined-up aftercare experience, one that gives homeowners the knowledge and conﬁdence to get the best from their investment from day one. Manufacturers have a major role to play in making this easier by providing clear, accessible homeowner guides, digital support resources, and well-trained technical teams that installers can lean on to contribute to a more conﬁdent handover. Structured installer programmes like Daikin’s Sustainable Home Network go further, providing hands-on commissioning support, ongoing technical backup, and a clear development pathway from

£9,000

Boiler Upgrade Scheme (BUS) grants up to £9,000 are available for homes currently heated by oil or LPG

The increasing BUS grant is an invitation to reach new customers, to grow the market, and to demonstrate that heat pump technology delivers when it is properly supported. newcomer through to expert. When installers feel confident and well-supported, homeowners benefit directly. For installers, the handover conversation needs to go beyond the basics of switching the system on. Key areas to cover include how heat pumps differ from gas boilers in operation, how to read and understand controls, how weather compensation works, and how homeowners can take advantage of time-of-use energy tariffs to reduce running costs. Where homes include EV charging, battery storage or rooftop solar, installers should also flag how these can be integrated for a smarter, lower-cost energy setup.

Technology enables ongoing support to be far more accessible and practical for the installer. Platforms such as Daikin’s Stand By Me connect the homeowner, installer, and manufacturer from the moment a system is commissioned, providing a single point of access for warranty, maintenance reminders, and service records. Connected cloud services already allow installers to monitor systems remotely, receive automatic alerts, and adjust settings without returning to site. This isn't a future ambition; it's available now and is successfully reducing callbacks and improving homeowner satisfaction among those who use it.

Shared responsibility The increasing BUS grant is an invitation to reach new customers, to grow the market, and to demonstrate that heat pump technology delivers when it is properly supported. That invitation comes with a responsibility though, to ensure every homeowner who makes the switch has the understanding and aftercare they need to have a genuinely positive experience. Manufacturers and installers who rise to that challenge will beneﬁt directly. Satisﬁed homeowners generate referrals. Fewer avoidable callbacks mean leaner operations, and a growing reputation for quality handovers differentiates businesses in an increasingly competitive market. Now it is time for the industry to ensure that every homeowner who chooses a heat pump is set up to succeed. For more information please www.rdr.link/pcc009

PROFESSIONAL HEATING & PLUMBING INSTALLER SEPTEMBER 2026 21

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ROOM HEATING & UFH

APPROACHING DECARBONISATION Malcolm Farrow, Director of Marketing and External Affairs at OFTEC, asks if the UK is too academic with its approach to decarbonisation?

ransitioning homes and businesses onto low carbon heating is a monumental task. Whilst a decade ago it felt like the UK was ahead of the curve, in recent years we’ve seen multiple changes in government and ministerial positions, combined with numerous consultations and an underspend in the budget strategies. As a result, there’s and heat pump deployment is been lots of debate, but this still behind target. It also has distracted from taking real reinforces that while the Malcolm Farrow, Director world actions. At the same government claimed the of Marketing and External time, for consumers the increase was to help Affairs at OFTEC ongoing cost of living crisis is households struggling with drastically reducing their capacity to adopt higher fuel costs, it’s mainly wealthier low carbon choices. Not to mention households who will benefit from the grant government spending power has been as only they can top up the additional significantly hampered in the current costs needed to make the switch. economic climate. However, when you look overseas at the approach of some of our European neighbours and how they’ve adapted to these changes, it’s clear that despite these challenges it is possible to rethink and take a bolder, more pragmatic approach. However, in the UK, the determination to strive for a single electrification solution ignores this new economic reality.

Our vision is for a technology neutral approach which embraces both heat pumps and renewable liquid fuels

Mixed messaging

Progress elsewhere

The heating industry is currently facing mixed messaging and shifting goalposts. For example, the government recently increased the Boiler Upgrade Scheme (BUS) grant from £7,500 to £9,000 specifically for oil and LPG heated properties. The government reiterated its commitment to electrification, but at the same time publicly acknowledged that for off-grid households this approach is often significantly harder and more expensive. That partly explains why there’s been

While here in the UK we grapple with policy debate and consultations, we can look to the Republic of Ireland which is taking a more pragmatic approach. They have recognised the difficulties for off-grid homes and plan to introduce a Renewable Heating Obligation from January 2027. Admittedly, their starting blend is just 1.5%, although the industry is proposing it should be higher. However, it is at least a positive step which shows the right intention and a willingness to explore a different path.

22 SEPTEMBER 2026 PROFESSIONAL HEATING & PLUMBING INSTALLER

This level of blend will also build up over time. It’s a pragmatic and practical move that gets the transition to low carbon heating moving, without placing an immediate, heavy ﬁnancial burden on households who are already managing tight budgets.

Renewable liquid fuels Where heat pumps aren’t suitable, or can’t be cost-effectively installed, fuels such as Hydrotreated Vegetable Oil (HVO) offer an ideal solution without the high upfront cost. Its initial deployment as a blend could be rolled out to all existing users in the UK straight away with no boiler modiﬁcations required. Furthermore, HVO does not suffer from the same level of price volatility as kerosene, and the fuel does not come from the Middle East which provides more market stability. Our vision is for a technology neutral approach which embraces both heat pumps and renewable liquid fuels. Other countries have recognised we can’t rely on just one solution, and we need to do the same. We need policymakers to take inspiration from other countries adopting this more nuanced approach. Otherwise, we risk wasting another Parliament debating and pursuing underachieving policies without making the real difference households and the country needs to see. For more information on OFTEC please www.rdr.link/pcc010

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PLUMBING & BATHROOMS

A & Q

PUMP SOLUTIONS FOR WETROOM INSTALLATIONS Q

When undertaking a wetroom installation what are some of the main aspects bathroom fitters need to consider?

Will McPhee, Technical Sales Manager, Pump Technology answers some questions on wetroom installations and the importance of selecting an appropriate pump.

A successful wetroom installation starts long before the tray or floor former is fitted. Careful planning is essential to ensure the finished room delivers both the appearance and performance the customer expects. Installers should consider the overall layout, the available drainage route, floor construction, waterproofing and future accessibility. Creating the correct falls towards the drain is critical to prevent standing water, while ensuring the waterproof membrane or tanking system is installed correctly helps protect the building fabric from moisture ingress. It’s also important to think about maintenance. Choosing products that allow easy access for servicing and cleaning can save significant time and cost later. As more homeowners choose wetrooms for contemporary styling, accessibility or multi-generational living, reliability has become just as important as aesthetics.

Efficient drainage is fundamental to the performance of any wetroom. The drainage system must be capable of removing water at least as quickly as it enters the shower area to prevent pooling or overflow. Installers should pay close attention to pipe sizing, routing and gradients where gravity drainage is possible. In situations where gravity drainage isn’t practical – such as basements, internal rooms or extensions – a pumped waste solution may be required. It’s equally important to minimise restrictions within the pipework by avoiding unnecessary bends and ensuring connections are correctly installed. Selecting a drainage solution that is designed for the expected flow rates and installation environment helps deliver consistent long-term performance while reducing the likelihood of future call-backs.

When it comes to drainage what are the key things for installers to focus on?

24 SEPTEMBER 2026 PROFESSIONAL HEATING & PLUMBING INSTALLER

Image: Whale

Do installers need to consider the type of shower being used in the wetroom?

Absolutely. Different shower systems can produce significantly different flow rates, and the drainage solution must be selected accordingly. High-performance mixer showers, digital showers and pumped shower systems are capable of delivering much greater volumes of water than standard electric showers. If the drainage system cannot keep pace, water can accumulate on the wetroom floor, affecting both safety and customer satisfaction. Understanding the shower’s maximum flow rate allows installers to select an appropriate waste solution with sufficient capacity. Considering future upgrades can also be worthwhile, particularly where homeowners may replace the shower with a higher-performance model later.

Efficient drainage is fundamental to the performance of any wetroom

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Matching the drainage solution to the shower speciﬁcation helps ensure reliable operation throughout the life of the installation.

How has the Instant Match Premium range been designed to support wetroom installations?

Whale’s Instant Match Premium range has been developed to simplify product selection while delivering reliable performance across a wide variety of bathroom and wetroom installations. The range has been engineered to accommodate different shower ﬂow rates and installation requirements, making it easier for installers to identify the most suitable solution without unnecessary complexity. Compact designs provide greater installation ﬂexibility where space is limited, while quiet operation helps create a better experience for homeowners.

Ease of installation has also been a key design consideration, helping reduce installation time while maintaining dependable performance. Combined with Whale’s focus on quality engineering and long-term reliability, Instant Match Premium gives installers conﬁdence that they are ﬁtting a solution designed to perform day after day.

Can Instant Match Premium be paired with a solution to shut-off water supply if pump performance is compromised?

Yes. For additional protection, Instant Match Premium can be paired with Whale Sense, Whale’s intelligent electronic shut-off system. Whale Sense continuously monitors pump operation and is designed to detect conditions that could indicate reduced pump performance or a developing fault. If

an issue is identified, the system automatically isolates the incoming water supply, helping to prevent flooding and minimise the risk of water damage. This additional layer of protection provides reassurance for both installers and homeowners, particularly in higher-value properties or locations where leaks could cause significant disruption. It can also reduce the likelihood of costly remedial work and insurance claims resulting from overflow incidents. By combining Instant Match Premium with Whale Sense, installers can offer customers a complete wastewater management solution that not only performs efficiently during everyday use but also actively protects the property should unexpected issues arise.

For more information please www.rdr.link/pcc011

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PLUMBING & BATHROOMS

With momentum for sustainable solutions continuing to accelerate due to net-zero initiatives such as clean energy, decarbonisation, and water conservation, Lee Halstead, Technical Sales Engineer for RWC, takes a look at some plumbing innovations that could help to keep sustainability at the core of projects.

ENABLING sustainability D

ue to climate change, population growth and high demand, water scarcity is currently affecting a number of UK regions. Managing water usage efficiently has therefore become essential, both in the context of net-zero ambitions and in Lee Halstead the health and well-being of vulnerable people. Pressure Reducing Valves (PRVs) play a key role in supporting a more positive future outlook. Traditionally specified to improve system performance and longevity, PRVs regulate incoming water pressure to suit the specific requirements of a property. In doing so, they deliver an often-overlooked sustainability benefit: controlling excessive pressure reduces overall water consumption. This is increasingly important as the UK works towards targets to reduce individual water usage.

Likewise, Government plans and regulators are driving greater adoption of smart water metering to better understand, manage and reduce demand, while identifying inefficiencies in real time, consequently creating market conditions that favour the technologies that manage pressure and consumption at the source, such as PRVs. With regulators exploring minimum efficiency standards for products and buildings, particularly in new builds, the Reliance Valves Pressure Reducing Valves are evolving from a reliable performance

26 SEPTEMBER 2026 PROFESSIONAL HEATING & PLUMBING INSTALLER

component into a strategic tool for regulatory compliance and water conservation.

Detecting leaks Generally caused by ageing infrastructure or poor connections, leaks are often inevitable – and remain a contributor to unnecessary water loss. And as with PRVs, leak detection technology plays a critical role in reducing this water wastage. In a time of water scarcity and tightening consumption targets, plumbing systems must work harder to prevent this avoidable waste. One solution is early detection, and the Reliance Valves MultiSafe Leak Detector Control Valve achieves this through continuous monitoring of water consumption and alerting homeowners or residential building managers when unusually high volumes of usage are detected, enabling immediate action to be taken. As well as monitoring, the detector’s isolating valve will automatically shut off

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the water supply when unusually high usage is detected, and will send an instant alert by text or email. With the addition of microleak testing at regular intervals, even a small leak will be detected before it has a chance to cause damage. As regulators increasingly expect detailed consumption data to underpin targets and leakage commitments, solutions such as the MultiSafe Leak Detector offer specifiers a practical way of futureproofing projects by complementing smart metering strategies and supporting the data requirements of water companies. For end users, the solution contributes to water savings, reduced risk of property damage and the peace of mind that this brings.

Multi-occupancy buildings When working with multi-occupancy buildings, water efficiency presents a whole new set of challenges due to the high-density demand, shared infrastructure, and the necessity to balance efficiency with constant, uninterrupted

From the perspective of speciﬁers and installers, tenant valves are particularly valuable where space and time constraints exist. By integrating all elements of a traditional valve chain into one compact unit, they reduce the number of connection points, which in turn simpliﬁes installation, reduces the need for maintenance and speeds up servicing.

Futureproofing

service for residents. The Reliance Valves Tenant Valve Advance has been developed speciﬁcally to address these environments by combining multiple functions into a single, self-contained unit. The one-piece combination valve allows individual apartments to have their water pressure managed and consumption monitored independently, while a dedicated connection point for installing a water meter supports accurate measurement and billing at a unit level.

Water conservation is no longer a secondary consideration; it is a central pillar of the UK’s sustainability and net-zero strategy. For speciﬁers, this presents both a responsibility and an opportunity. By adopting water-efficient design practices and embracing innovative plumbing technologies such as PRVs, smart leak detectors and tenant valves with integrated metering, speciﬁers can ensure that their projects are future-proofed, sustainable, and designed with the end user in mind. For more information please www.rdr.link/pcc012

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PLUMBING & BATHROOMS

FAQ

EXPANSION VESSELS

Expansion vessels play a vital role in maintaining the safe and efficient operation of sealed heating and hot water systems. Chris Haycock, Technical Support Engineer at Altecnic, answers some of the most frequently asked questions surrounding expansion vessels.

What is an expansion vessel and why is it needed?

The simple answer is that an expansion vessel gives water somewhere to go when it expands. As water heats up within a sealed heating or hot water system, its volume increases, causing the system pressure to rise. Without an expansion vessel, that pressure could cause the pressure relief valve to discharge, place unnecessary strain on system components, or even lead to leaks and damage. By absorbing this increase in water volume, the vessel helps maintain stable system pressure, protecting boilers, heat pumps, HIUs, unvented cylinders, pipework and other key components while supporting safe and efficient operation.

How does an expansion vessel work?

Although heating, potable and ﬂow-through vessels are designed for different applications, they all work on the same principle. As water expands, it enters the vessel and compresses a cushion of air or nitrogen that's separated from the water by either a diaphragm or bladder. As the system cools, the compressed air pushes the water back into the system, maintaining stable pressure. The difference lies in their construction and intended use: Heating Vessels

Heating vessels use a diaphragm to separate the system water from the air charge and are designed for sealed heating and cooling systems. Potable Vessels

Potable vessels use a rubber bladder to prevent wholesome water from contacting the steel body, helping maintain water quality. Flow Through Vessels

If the vessel is too small, you'll often see excessive pressure rises and repeated pressure relief valve discharge. Oversizing won't usually cause operational issues, but it can add unnecessary installation costs. Specialist vessels should also be selected for applications such as solar thermal, solid fuel and booster systems. Installer tip Altecnic provides free expansion vessel sizing calculators for both heating and potable systems to simplify vessel selection.

Can the same expansion vessel be used for heating and potable water?

No. Although they look similar, they're designed for different applications. Potable vessels use an internal butyl rubber bladder that prevents drinking water from contacting the steel body, helping maintain water quality and ensuring compliance with wholesome water applications.

Q Flow-through vessels operate like potable vessels but include an internal ﬂow diverter that encourages continuous water movement, reducing stagnation and improving water hygiene.

Why is correct vessel sizing important?

Correct sizing is essential because the vessel must safely accommodate the increase in water volume as the system heats up. To size a vessel correctly, installers need to know the system volume, maximum ﬂow temperature, static height and safety valve setting.

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What is pre-charge pressure and why does it matter?

Pre-charge pressure is the air or nitrogen pressure already inside the vessel before the system is ﬁlled. Think of it as the cushion that allows the vessel to absorb expanding water while maintaining stable system pressure. If the pre-charge isn't set correctly, the vessel won't perform as intended, which can lead to unstable pressures and unnecessary pressure relief valve discharge. Installer tip The pre-charge pressure of an expansion vessel can be easily checked and adjusted via the Schrader valve located at the top of the vessel. To simplify expansion vessel maintenance, Altecnic offers a digital handheld pressure gauge (product code PVADG), enabling installers to check pre-charge pressure quickly and accurately.

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Why are some expansion vessels nitrogen charged?

Nitrogen diffuses through the diaphragm much more slowly than compressed air, helping the vessel retain its pre-charge for longer. This reduces maintenance, improves long-term performance and also minimises oxygen within the vessel, helping reduce the risk of internal corrosion. Installer tip All Reﬂex expansion vessels supplied by Altecnic are factory pre-charged with nitrogen. This helps reduce corrosion and slows pressure loss through the diaphragm, maintaining performance for longer. As a result, Altecnic offers a 5-year warranty on Reﬂex expansion vessels.

How do I know if an expansion vessel has failed?

There are usually a few clear warning signs. Rapid pressure increases during heating,

repeated pressure relief valve discharge, reduced heating performance or excessive system noise can all indicate a problem. The most common causes are a failed diaphragm, loss of pre-charge pressure, corrosion or physical damage.

How do I know if my expansion vessel needs replacing?

Not every issue means the vessel needs replacing. If the pre-charge has simply dropped, it can often be restored. However, if the diaphragm has failed or there's water present at the valve, replacement is usually the safest and most reliable solution.

How often should I check my vessel’s pre-charge?

At the very least, the pre-charge should be checked during annual servicing. On

higher-use or more critical systems, I'd recommend checking it more frequently to make sure the vessel continues to perform as intended.

What common mistakes should installers avoid?

Most of the issues we see come back to a few avoidable mistakes: ● Selecting the wrong vessel size ● Setting an incorrect pre-charge pressure ● Not checking the vessel during routine servicing ● Ignoring repeated pressure relief valve discharge ● Continually topping up the system instead of investigating the cause of pressure loss For more information please www.rdr.link/pcc013

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ADVERTISEMENT FEATURE

WHY COLLABORATION WILL BE CRITICAL IN DELIVERING THE HOMES OF TOMORROW The way homes are designed, specified and constructed is changing rapidly. With increasing performance expectations, evolving regulations and increasing pressure to reduce environmental impact, heating and plumbing professionals are now required to navigate a more complex construction landscape than ever before. To truly understand how the industry is responding, Polypipe Building Products brought together key voices from across the housing supply chain through two events: an SME housebuilder-focused roundtable event in March, and a sustainability-focused session in June which involved attendees from across the construction supply chain. Whilst the conversations explored different challenges, a clear message was consistent throughout both sessions: delivering better homes requires closer collaboration, XXXXXXXXXXXXXXXXXXXXX clearer information and technical support from across the entire supply chain.

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Homes are becoming more complex to deliver XXXXXXXXX The March roundtable highlighted the challenges facing SME housebuilders and their delivery partners. While pressure remains to meet the Government’s target of delivering 1.5 million new homes, attendees shared their perspectives on other obstacles to navigate including XXXXXXXXXXXXXXXXXX planning delays, skills shortages, regulatory change and complex technical requirements. XXXXXXXXXXXXXXX For heating and plumbing professionals speciﬁcally, this shift is already tangible on the ground. Building modern homes isn’t about planning and installing individual products – instead, they now involve increasingly integrated systems like low-carbon heating technologies and ventilation solutions, water management and smart controls. As these systems are becoming more interconnected, the roundtable highlighted that early engagement between designers, manufacturers, contractors and installers is now the difference between confident project delivery and reactive problem-solving. Introducing technical expertise into projects earlier on can help to identify challenges sooner, improve coordination and reduce costly changes further down the line.

Sustainability needs to become practical The sustainability-focused discussion in June explored how the industry is approaching embodied carbon and more sustainable procurement. While sustainability is firmly on the agenda across the supply chain, attendees acknowledged that commercial realities continue to significantly influence decision-making. Product cost,

quality and availability remain crucial considerations when specification and purchasing decisions are made. However, expectations are changing. Developers, contractors and customers are increasingly looking for greater transparency around the environmental impact of the products they use, particularly as regulation and reporting requirements continue to evolve. A key takeaway from the discussion was that the industry does not simply need more sustainability data. Instead, it needs more support in understanding and effectively applying it. Environmental Product Declarations (EPD) are becoming more common, but many professionals still face challenges when interpreting the technical data they contain. Without context, comparisons and clear guidance, carbon data can be difficult to translate into practical decisions on a project. For installers and contractors, this reinforces the importance of working with manufacturers who can provide more than technical documentation. Clear advice, accessible information and practical support will become increasingly valuable as sustainability requirements become part of everyday specification and installation decisions. Balancing commercial priorities and sustainability One of the strongest themes from the sustainability discussion was that environmental improvements are most effective when they also deliver practical, tangible beneﬁts. Waste reduction, simplifying installations and increasing reliability were all identified as areas where commercial priorities and sustainability can work in tandem. For installers specifically, this means that sustainability is not just an additional requirement – it can also mean supporting better ways of working. Products and systems which reduce complexity, minimise waste and improve installation efficiency can deliver benefits throughout the lifecycle of a building.

“delivering better homes requires closer collaboration” Better homes are built together As the industry continues to navigate delivery pressure and sustainability requirements, collaboration becomes more critical than ever. The conversations at both sessions highlight that no single part of the supply chain can solve these issues alone. The future of housing delivery will not only be defined by new technologies, but also by how effectively the industry works together to use them. By combining product innovation with knowledge sharing and collaboration, the supply chain can help deliver homes that are more efficient, sustainable and fit for the future. For more information on Polypipe Building Products please www.rdr.link/pcc014

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LIGHT COMMERCIAL

FINDING A PATH

Greg Brushett, Sales Director, Adveco, provides some thoughts on Commercial Gas Water Heating.

he UK commercial building stock is entering a complex transition. Driven by legally binding Net Zero targets for 2050, the policy trajectory moves decisively toward electriﬁcation. However, natural gas remains the dominant commercial energy source for domestic hot water (DHW). Data from the Department for Energy Security and Net Zero (DESNZ) shows that of the 1.8 to 2million non-domestic UK buildings, 65% to 70% rely on the gas grid. The alternative of transitioning fully to an air source heat pump (ASHP) carries signiﬁcant capital hurdles which are

unlikely to markedly change, Greg meaning procurement and Brushett installation will continue to typically cost three and a half times more than high-efficiency gas alternatives. Older commercial premises also frequently lack the electrical headroom for large heat pump arrays. Upgrading grid infrastructure via a distribution network operator (DNO) can add £20,000 to £250,000+ to project costs, frequently stalling plans. Operationally, UK commercial energy tariffs average 7p per kWh for gas versus 27p per kWh for electricity. Although heat pumps achieve high operational efficiencies (300%+), generating high-temperature commercial ﬂow rates degrades this efficiency, pushing operating costs three to four times higher than gas without massive thermal storage investments. Environmentally, modern condensing gas water heaters operating at 91%+ efficiency represent a substantial upgrade. Upgrading an obsolete non-condensing unit delivers a 35% drop in gas consumption, yielding up to £220,000 in lifetime fuel savings. Modern units are also future proofed for the potential introduction of up to a 20% hydrogen blend in regional or national gas networks for future carbon reduction. An optional hybrid strategy with ASHP or particularly solar thermal for base-load pre-heating and high-efficiency gas for peak topping and mandatory ACOP L8 legionella pasteurisation cycles (storing water at 60°C), cuts carbon at manageable costs. For facilities with intense peak hot water demands - schools, restaurants, leisure and healthcare facilities - gas systems provide a power density that electric alternatives still struggle to match economically. The government’s Heat and Buildings Strategy avoids forcing premature scrappage of working machinery, focusing instead on

32 SEPTEMBER 2026 PROFESSIONAL HEATING & PLUMBING INSTALLER

natural trigger points at end-of-life. Even with a 2035 phase-out ambition for new gas boiler installations, upgrading to high-efficiency gas water heaters provides 15-plus years of reliable operation, forming a practical bridge to new energy systems by 2050. So, sticking with gas during a replacement cycle remains a highly pragmatic economic and environmental choice for commercial operators.

Evolving DHW Installation This is good news for gas-accredited installers, with a further decade of commercial installation projects in the offing alongside ongoing service and repair well into the 2040s and beyond. But it is worth remembering that executing a gas-to-gas upgrade requires moving past simple like-for-like assumptions. Approved Document L (Volume 2) mandates a minimum seasonal efficiency of 91% (Gross Calorific Value) for replacement commercial water heaters, ending the non-condensing era. Installers must navigate four physical and mechanical constraints: sizing, access, fitting, and flueing.

Sizing Oversizing causes capital waste and standing thermal losses, while undersizing creates operational failure. For a successful installation, the design must establish the building's true demand profile: hot water volume, peak hourly usage, and required delivery temperatures. Specifications should ideally leverage historical data from sub-meters, which are required on 90% of energy use in buildings over 1,000 m². If data is lacking, temporary metering can be instigated, and expert DHW engineers, such as those at Adveco, can aid in calculating peak profiles using occupancy patterns and fixture counts.

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Access Replacing large, commercial water heaters is a heavy, physical task. Standard 300- to 380-litre commercial units will still weigh 250-300 kg empty and 550-700 kg when ﬁlled. Installers need to consider a structural route survey before delivery. Commercial plant rooms are frequently buried in basements or conﬁned to rooftops, requiring transit via service lifts or tight structural openings. Verifying door widths and lift capacities against the appliance's footprint eliminates costly installation-day delays.

Fitting Retrofit installations also require the new appliance to adapt to existing pipework runs rather than the reverse. Specifying units with multiple connection options significantly reduces the time and expense of rerouting pipework in crowded plant rooms. Look for ‘universal retrofit’ options afforded by multiple connection points across top, front, side, and rear positions. This simplifies mapping connection position and height into

site drawings to ensure physical compatibility. Services must also be validated under load. Systems require stable inlet pressures between 17.0 and 25.0mbar for G20 natural gas. A supply line that drops below these limits during peak ﬁring will cause commissioning failure. Single-phase 230V/50Hz/2A power demands are standard, but installers must ensure dedicated unvented kits and matching controls are procured as a uniﬁed package.

Flueing Because condensing appliances extract latent heat, exhaust gases are far cooler than legacy systems. Old metal flues or masonry linings are incompatible and must be replaced with dedicated polypropylene (PP) or stainless steel systems. Installers must also run dedicated drainage for the acidic condensate produced. Flue upgrades and plant modifications can double baseline installation costs, meaning they must be budgeted upfront. Installers should evaluate three main flue configurations against manufacturer

length limits. Open Flue (B23) for long runs up to 41m (80mm) or 56m (100mm). Concentric Flue (C13/C33) for neat single penetrations up to 15m or 40m. Or Twin-Pipe Flue (C53/C63) for separating intake and exhaust paths around architectural barriers. All equations must factor in friction loss from elbows, which subtracts from the maximum linear run.

In conclusion Upgrading an ageing commercial gas system to a high-efficiency condensing model is a legally compliant, cost-effective next step for UK businesses. By carefully calculating sizing, verifying access, maximising connection layout flexibility, and selecting correct flue configurations, installers can deliver immediate carbon reductions and substantial capital and operational savings. All while bridging the gap smoothly toward a net-zero future in line with the customer’s broader sustainability goals. For more information please www.rdr.link/pcc015

LIGHT COMMERCIAL

FAMILY EXPANSION Daikin has announced an expansion of its CZ family of commercial heat pumps with the addition of the new R-290 based EWA(Y)K-CZ range.

oining the existing CZ-HT High Temperature Commercial Heat Pump, the company says this latest addition broadens the CZ portfolio to offer a wider choice of solutions for commercial and large-scale residential decarbonisation. With a GWP of 0.2, the new EWA(Y)K-CZ range adds a natural refrigerant option to the family, using R-290. Available in both heat pump and cooling-only conﬁgurations from 17 to 85kW, the company says the range is suitable for new installations and retroﬁt projects alike.

Daikin says that together, the CZ-HT and the new R-290 EWA(Y)K-CZ units form a complementary and more complete range, enabling speciﬁers, building owners and commercial installers to select the most appropriate solution based on application, performance requirements and environmental credentials. Cliff Jones, Daikin UK’s Head of Applied, commented: “The CZ-HT has already demonstrated its ability to decarbonise a wide range of commercial buildings, delivering reliable high-temperature

heating as a direct boiler replacement. By now adding an R-290 option to the family, we can offer customers a genuinely broader choice, that covers more applications and allows speciﬁers to match the right product to the right project, including those with the most exacting environmental requirements.” For more information please www.rdr.link/pcc037

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LIGHT COMMERCIAL

UNDERSTANDING LEGIONELLA RISKS Legionella bacteria in a water system is a well-recognised risk to health and safety, so plumbing and heating engineers need to be aware of it – especially those undertaking light commercial or local authority work where risks can be increased if water is stored, says Steve Dunning, Managing Director of Martindale Electric.

egionella bacteria can occur naturally in freshwater environments, but become a signiﬁcant health risk when they colonise man-made water systems within buildings. The conditions most commonly associated with bacterial proliferation include water temperatures between 20°C and 45°C and stagnant or slow-moving water, but also inadequate system maintenance and inspection. To this end, legionella regulations in the UK include the Health and Safety at Work Act, highlighting risks from legionella bacteria arising from job activities; the Management of Health and Safety at Work Regulations; and the Control of Substances Hazardous to Health (COSHH) which provide a framework of actions designed to reduce the risk from bacteria like Legionella. The requirements include regular risk assessments for water systems, control measures, regular monitoring, and keeping records – all guided by the HSE's Approved Code of Practice (L8).

Recognising the risk Despite this, cases of Legionnaires’ continue to make headlines, because although often associated with poorly designed and maintained water supply systems, the potential sources of contamination extend beyond conventional plumbing installations. Cooling systems, humidiﬁers, infrequently used outlets such

as taps and showers, spa pools, fountains and hot tubs can also create conditions favourable to bacterial growth – if temperature control, disinfection procedures and monitoring regimes are insufficient.

Surface and immersion probes enable straightforward temperature measurement on pipework and storage tanks The disease is typically caught by breathing in ﬁne droplets of water containing the legionella bacteria. Once inhaled, the bacteria can infect the lungs, leading to symptoms that may include coughing, breathing difficulties, high temperatures and ﬂu-like illness. While relatively uncommon, the disease can be severe, particularly among smokers, older individuals, those with existing respiratory conditions, and people with weakened immune systems.

Practical support To support effective water hygiene practices, a range of tools and resources are available to assist with monitoring, assessment, record keeping and staff awareness:

34 SEPTEMBER 2026 PROFESSIONAL HEATING & PLUMBING INSTALLER

�� Record Keeping and Compliance Accurate, clear, and consistent documentation remains an essential component of water system management. Resources like Martindale’s Legionella Logbook enable users to record inspections, testing activities and monitor results in a structured format. The logbook enables details of completed checks, inspection ﬁndings, completion dates and responsible personnel to be recorded and retained as a permanent on-site record. Maintaining comprehensive record keeping supports ongoing management programmes and provides evidence of monitoring activities when required. �� Temperature Monitoring and Testing Temperature control is a fundamental part of Legionella prevention. Martindale’s THERMOKITLGN kit, for example, has been created to support temperature testing and monitoring programmes, helping to identify and reduce conditions that encourage the growth of Legionella and other bacteria. The kit includes a digital thermometer with a maximum-value function, together with two thermocouple probes supplied in a durable carry case. Surface and immersion probes enable straightforward temperature measurement on pipework and storage tanks, supporting routine inspection and veriﬁcation activities.

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�� Risk Assessment Support A comprehensive risk assessment is a vital part of any Legionella control strategy and Martindale’s free downloadable Legionella assessment guide provides practical advice and guidance to assist users in evaluating potential risks within properties. The assessment form is designed to support a structured evaluation process, helping ensure important considerations are note overlooked. It should, however, always be used alongside applicable regulatory guidance and recognised industry best practice. �� Training and Awareness Competence and awareness are critical to effective management protocols and Martindale’s Basic Legionella Management Training Course provides a cost-effective, interactive online learning platform for employers, contractors and staff alike.

To support effective water hygiene practices, a range of tools and resources are available to assist with monitoring, assessment, record keeping and staff awareness The course explores the risks associated with Legionella, methods for identifying potential sources of contamination and practical approaches to risk assessment. Participants gain the knowledge to establish a basic Legionella control programme or make informed decisions when engaging specialist service providers.

A proactive approach By implementing effective risk management practices, regular monitoring, and appropriate control measures, all responsible parties – including plumbing and heating engineers – can signiﬁcantly reduce the likelihood of bacterial growth within water systems and help protect occupants, visitors and the wider community from the potentially serious consequences of Legionnaires’ disease. For further information relating to testing requirements refer to the Health and Safety Executive document “The control of legionella bacteria in water systems Approved Code of Practice and guidance” and other guidance material from the www.rdr.link/pcc016 HSE. Please For more information on Martindale’s support materials please www.rdr.link/pcc017

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LIGHT COMMERCIAL

h s u l f WITH OPPORTUNITY

Richard Braid, Managing Director at Cistermiser, explains why washroom retrofits are a straightforward and cost-effective solution for both installers and commercial clients.

ater isn't something businesses can take for granted anymore and the numbers back that up. Defra's White Paper, A New Vision for Water, projects a daily shortfall of five billion litres across England by 2055, driven by a growing population, a changing climate and infrastructure that's often decades old. Defra has also set targets to cut per capita consumption from 136.5 litres a day to 122 litres by 2038 and 110 litres by 2050, alongside a 15% cut in business water use by 2050. The targets and changes happening now will shape what clients need to specify, and washrooms are often where the biggest, easiest wins are found.

Continuous flow Thames Water data shows around 25-30% of water delivered to non-domestic properties is classed as continuous ﬂow (one litre per hour or more, running for 14 days straight). This could be internal wastage, a leak, or genuine usage. Two of the biggest contributors to continuous ﬂow in businesses are likely leaky-loos and uncontrolled urinals. These are completely avoidable running costs that can be designed out of washrooms.

A straightforward washroom audit can reveal many issues: uncontrolled cisterns, leaking loos, taps with no sensor or flow restriction

Improving urinals Uncontrolled urinals are a big culprit when it comes to water waste. A standard auto-flush cistern cycling three times an hour (whether it's needed or not) can use around 197,000 litres a year. But there are simple fixes. Richard Braid A motion sensor-controlled system detects when someone is near and triggers a flush only after use. Cistermiser's Direct Flush, for example, fits directly onto the mains supply and removes the need for an auto-flush cistern. It reduces water consumption to around 15,000 litres a year, saving over £700 annually and roughly 0.06 tonnes of CO2, just by cutting out the flushes nobody needed. Where the urinal is cistern-fed rather than mains-fed, the fix is just as straightforward. Cistermiser’s Infrared Control Valve uses a sensor to manage the flow of water to a cistern, only activating the solenoid valve that controls water when it detects occupancy, instead of topping up on a timer regardless of footfall. Again, it reduces water use by 80%, saves around £700 a year and cuts 0.06 tonnes of carbon.

Toilet upgrades Toilet leaks can be harder to spot than water waste from urinals because they often show up as a slow trickle down the back of the pan rather than an obvious fault. According to the Waterwise UK Water Efficiency Strategy to 2030, between 5-8% of toilets across the UK are leaking, wasting around 400 million litres a day. One cause of a leaky loo is the traditional

36 SEPTEMBER 2026 PROFESSIONAL HEATING & PLUMBING INSTALLER

drop-valve system where the seal sits below the waterline, collecting scale and debris which causes degradation over time. A flush valve with no seal below the waterline, like the Easyflush Evo, takes that problem out of the equation entirely. It is a sensor activated dual flush valve that won’t degrade and won’t leak, saving around 146,000 litres of water a year. Direct flushing goes one step further by removing the cistern altogether and using mains pressure for a controlled flush instead. It means there is no standing water left to degrade a seal in the first place. Cistermiser's Easyflush Direct works this way, and can save customers almost £600 a year with payback in 11 months.

5-8%

According to the Waterwise UK Water Efficiency Strategy to 2030, between 5-8% of toilets across the UK are leaking.

Taps A dripping tap might not seem like much, but it can waste up to 5,500 litres a year. In washrooms, traditional taps can simply be left running, wasting even more water. Sensor taps only run when someone's there. An infrared sensor detects hands

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washroom retrofits tick every box: minimal disruption, fast payback and a clear reduction in both cost and carbon placed in front of the faucet, sending a signal to open a solenoid valve to activate water. Cistermiser's Vecta+ range also adds a 60-second safety shut-off, so a fault doesn't turn into a ﬂooded washroom. Using just one sensor tap can save clients over £600 a year.

The opportunity for installers A straightforward washroom audit can reveal many issues: uncontrolled cisterns, leaking loos, taps with no sensor or ﬂow restriction. Smart meter data helps where it's available, but a lot of the waste in a typical light commercial washroom is obvious the moment you're standing in front of it. That's where the opportunity sits for installers. Washroom retroﬁts tick every box: minimal disruption, fast payback and a clear reduction in both cost and carbon. For more information on water-saving solutions and how Cistermiser can help www.rdr.link/pcc018 please

Case Studies To discover how Cistermiser’s solutions have been used across a range of commercial projects www.rdr.link/pcc036 please

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TOOLS & EQUIPMENT

TOOL TRAINING

ime is money, and for busy plumbing professionals when the jobs are planned in and the pipeline is ﬁlled weeks, sometimes months in advance, it can be genuinely difficult to ﬁnd the time for training. Yet it is crucial, equipping both experienced professionals and apprentices with the knowledge, awareness and reminders required to remain safe on site. When it comes to power tools and machinery, it should fundamentally offer education on the hazards and risks, which could cause immediate injury, as well as the possible effects on long-term health. This is because the very nature of plumbing and heating installations, maintenance and repair work translates into daily exposure to noise, dust and vibration. Extended or frequent exposure to higher levels of noise can lead to permanent hearing damage. Dust, even in its mildest form and limited exposure, can lead to skin and eye irritation.

Common tasks Common tasks, such as chasing out walls to conceal pipework, drilling holes in concrete, brickwork or masonry to either investigate issues or repair pipework means plumbers are regularly disturbing building materials and using a range of power tools such as drills, angle grinders

Tony Coleman, Technical Services Manager at Makita, explains how effective training can help maintain robust health and safety standards, as well as highlighting how the tools and technology can ensure the best possible results. and reciprocating saws. Tool vibration is also an important health and safety issue. Hand Arm Vibration can lead to conditions such as Vibration White Finger and Carpal Tunnel Syndrome.

the tools, do research the types of training sessions out there and what they cover to ensure you come away with the speciﬁc knowledge and information you want.

Theory & practice Importance of PPE Look for training courses that highlight all these hazards as well as clear instructions on how they can be mitigated. Training will underline the importance of personal protective equipment (PPE) and ensure that you are not unknowingly using incorrect or insufficient protection. Also be aware that the Provision and Use of Work Equipment Regulations (PUWER) 1998 requires employers to ensure that anyone using equipment in the course of their work has received ‘adequate training for the purposes of health and safety.’ Aside from the obvious health and safety focus good training should have, product demonstrations are also a valuable use of a professional’s time. Manufacturers are developing and changing their products and technologies constantly to keep improving productivity, power supply and general performance. If you are clear on the capability of what’s out there, you could also be making tasks quicker and easier for yourself on site. Finally, if you are going to take time off

38 SEPTEMBER 2026 PROFESSIONAL HEATING & PLUMBING INSTALLER

At Makita, although we can come to site for large contractor teams, for the vast majority of professional plumbers, the most valuable sessions are those that take place at one of our four national Factory Service Centres (FSCs). This is because in just one session, our teams cover a wide range of tools and machinery, so you really make the most of the time you have set aside. Whatever training you do go for, it is highly advisable to check that the session will cover both theory and practical instruction. Ultimately, you want to ensure you work safely and properly protect yourself from the hazards. In addition, the training can make sure you are using the latest tools in the correct way to help maintain professional standards while working efficiently and effectively – to give you that competitive edge. To ﬁnd out more about the full portfolio of training Makita can offer, including its ‘Correct and Safe Use of Handheld Power Tools’ and ‘Be Safe’ courses please www.rdr.link/pcc019

PHPI page grid_Layout 1 09/09/2025 14:52 Page 1

phpionline.co.uk features the latest industry news, video reviews, technical updates and exclusive competitions, giving you instant access to all things heating and plumbing on your desktop, laptop, tablet or phone.

w ww.phpionline.co.uk Professionalplumber

@PHPI

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TOOLS & EQUIPMENT

Looking for a way to clear drain blockages? PHPI takes a look at the RIDGID K-46 SinkSnake, a cordless tool promising a long reach.

CLEAR THE WAY B

lockages in sinks, basins, showers and baths are common call-outs for many plumbers, with customers often looking for a quick resolution. One tool designed to clear blockages is the RIDGID® K-46 Cordless SinkSnake™. The cordless tool has a brushless DC motor and has been designed to clear tough blockages in 3/4" to 3" (20mm – 76mm) lines, such as sinks, shower, and urinals.

The unit is powered by the RIDGID 18V Advanced Lithium Battery Platform, providing cordless freedom for professional daily use. The K-46 features a 360-degree rotatable AUTOFEED® that advances and retrieves the cable in forward and reverse, and an enclosed rotating drum, designed to protect plumbing fixtures from accidental damage.

To watch a video of the K-46 www.rdr.link / pcb020

The company says it is compatible with 6mm & 10mm diameter cables up to 15.2m in length and multiple cable tools, such as dropheads, spades and c-cutter augers.

Stand up Integrated into the tool is a multi-position kickstand, designed to alleviate the weight of the tool in common work environments, such as under cramped sinks and in baths. Designed with versatility in mind, the K-46 has a top mounted LED light to illuminate the work area. There is also a Cable Lock feature, designed to improve handling when manually clearing the blockage. A wide variety of accessories are available with the tool including a carrying case, gloves and a fast charger. For more information please www.rdr.link/pcc021

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PHPI page grid_Layout 1 01/06/2026 09:40 Page 1

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Welcome to the

The Gas App UK Horror Show showcases some of the ‘finest’ work spotted by installers across the country. If you spot any masterpieces to rival these, please submit them to the good people at Gas App UK or email us: phpi@hamerville.co.uk

in association with

The app is available for both iOS and Android. Simply visit the stores and search for Gas App UK.

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PRODUCT VIDEO

H C T WA

SENTINEL X100 INSTADOSE W

hilst undertaking a boiler service at a property Chirag demonstrates how and where Sentinel’s InstaDose can be used to add inhibitor to a heating system. Sentinel’s X100 Inhibitor is familiar to many installers, although the company has now added InstaDose to its range to extend the options available to heating engineers and make application straightforward. Chirag notes: “So, we just ﬁnished doing the boiler service and where I drained the water out the boiler to check the water quality, I ran it through the Sentinel InstaCheck test and it has come back with low inhibitor levels, which is good because we've got some InstaDose here. So, we're going to go ahead and add that into the system ﬁlter.” With the filter sited in an awkward to access location, Chirag demonstrates how Sentinel’s InstaDose can aid application. He says: “As you can see, it's quite tight to the bottom of the boiler, but with our InstaDose, it shouldn't give us any problem.”

In this video on the PHPI YouTube Channel, Chirag from CP Utility Solutions, takes a look Sentinel’s X100 InstaDose inhibitor.

After preparing the ﬁlter and using Sentinel’s X100 InstaDose Chirag concludes: “See, the good thing is you don't have to worry about having to tip the pouch upside down or anything. Hold it in any orientation and just squeeze.” Chirag notes that the InstaDose can be added to any ﬁlter, including those not manufactured by Sentinel.

Additional options X100 InstaDose can also be added to a number of other points in a heating system including via a towel rail and a standard central heating radiator. Concluding, Chirag provides his thoughts on the Sentinel X100 InstaDose: “What do I like about it? Well, firstly, it comes in a squeezy pouch, which means it is easier to store on the van. It also comes with a bendy flexible tube, so this means you can get the inhibitor in into the tightest of spaces.” He continues: “You've also got multiple different attachments, which means you can add it into multiple different situations such as radiator bleed point, tower rail, and system filters, including Sentinel's own ones, which makes it a perfect all-in-one solution.” To watch the video please www.rdr.link/pcc022

PROFESSIONAL HEATING & PLUMBING INSTALLER SEPTEMBER 2026 43

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SHOW PREVIEW

YOUR SHOWS, NEAR YOU ...

FREE TO THE TR ADE

Get closer to the brands you use – at a venue near you – throughout the year... Throughout 2026 plumbers and heating engineers can get closer to the brands you use at SIX venues across the UK. The Toolfair and Professional Builder LIVE events will be coming to a location near you with an enticing mix of products, tools, workwear and solutions to keep professional installers productive every working day. It is a fantastic opportunity for trades professionals to discover the latest solutions in the sector, get hands-on with equipment, and meet the people behind the products. Best of all, the shows are free to attend for trades professionals.

Demos & deals

Taking place across two days at ‘van-friendly’ venues, each show features hands-on product demos, a huge array of tools and equipment, a chance to meet and quiz manufacturers on the products you use, and the opportunity to grab some special ‘show deals’ on the kit you need.

AT A VENUE NEAR YOU... ● Free entry ● Across two days ● 3 events in 1 ● Free parking (van friendly) ● Free T-Shirt or Free bacon roll ● Show deals ● Hands-on demos ● Meet manufacturers

Co-located with the popular and established electrical sector event ‘Elex’, Toolfair and Professional Builder LIVE will also give visitors the chance to network with fellow industry professionals and discover new products and solutions. Across two days, at a venue near you, and free-to attend, Toolfair and Professional Builder LIVE is a must-visit event for professionals across the trades.

PUT A DATE IN YOUR DIARY STONELEIGH PARK, WEST MIDLANDS

ALEXANDRA PALACE, LONDON

WESTPOINT, EXETER

22nd & 23rd October 2026

4th & 5th February 2027

22nd & 23rd April 2027

SANDOWN PARK, SURREY

BOLTON ARENA, BOLTON

YEC, HARROGATE

18th & 19th November 2026

4 & 5 March 2027

20 th & 21st May 2027

To register for your free pass please GOTO www.toolfair.info

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PRODUCT VIDEO

H C T WA

WELD-ON 717 ECO

In this video on the PHPI YouTube Channel, Jay from J.W. Watters Plumbing and Heating, takes a look at a range of solutions from WELD-ON, including the company’s 717 ECO PVC cement.

s part of a range of repairs at a property, Jay takes a look through a number of solutions from WELD-ON and Christy’s including the WELD-ON 717 ECO PVC cement and the company’s Pipe Repair. Wrap Trying out the 717 ECO on a pipe repair under the customer’s sink, Jay runs through the installation process and demonstrates both the company’s East Twist Can Opener and its Dauber application tool. Providing some thoughts on the company’s Easy Twist Can Opener, Jay notes: “It can become very difficult to get the lid off. And to save your hands, WELD-ON has thought of that. The easy twist can opener ﬁts onto the top of the can... and very easily opens the product.” Following the installation, Jay provides some thoughts on the odour from the 717 ECO noting: “I must say, the odour is very, very minimal.”

the pipe, knowing that you are leaving the customer leak-free that evening.” To demonstrate the product, Jay has created a simulation of a leak using a set-up featuring a copper pipe into which he has made a small hole. Jay demonstrates the application of the Pipe Repair Wrap and the pipe is put under pressure. Jay notes: “As you can see, the Pipe Repair Wrap is handling 10bar of pressure, which is far greater than you’d have on a traditional heating system.” Jay concludes: “It’s a brilliant product and I’d deﬁnitely have that in my tool bag from now on.”

Quick Fix Another product Jay takes a look at is Christy’s Red Hot Quick Fix, which he uses on a condense pipe. He explains how to use the product, including the applicator and demonstrates how to apply it to the pipe. Jay notes: “That is now set, so that means I can install the product without having to worry about anything moving or twisting.” Jay concludes: “It’s a great product and it perfectly accompanies the WELD-ON range.” To watch the video please www.rdr.link/pcc023

Pipe Wrap Another solution that Jay takes a look at is WELD-ON’s Pipe Repair Wrap. He explains: “Now, you might go to a leak late at night. If you have got this in your tool bag, you can make a temporary repair, by wrapping

PROFESSIONAL HEATING & PLUMBING INSTALLER SEPTEMBER 2026 45

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PRODUCTS ROUND UP

WILO LAUNCHES CONDENSATE MANAGEMENT SOLUTION Wilo UK has launched a new condensate management system designed to safely and efficiently remove condensate from condensing boilers. NovaCON has been developed as a compact, plug-and-play solution that provides reliable discharge of condensate into the drainage system. The company says that the system ensures safe and dependable performance through features such as an integrated float switch to prevent overflow and a non-return valve, which stops backflow. In addition to a standard condensate drain outlet, NovaCON offers the option to connect to the boiler pressure relief valve. This capability, says the company, creates a single, integrated discharge point, simplifying installation, reducing pipework requirements and supporting the safe, compliant routing of both condensate and PRV discharge. Andy Thompson, national sales manager for plumbing and heating at Wilo UK, said: “Managing condensate is often an overlooked part of an installation, yet it can have a significant impact on long term system reliability. With NovaCON, we wanted to give installers a straightforward, dependable solution that removes complexity on site and helps avoid common issues further down the line.” The company says that the system is compatible with a broad range of condensing boilers, including models up to 50kW. For more information please

www.rdr.link/pcc024

GEOCEL REVAMPS ITS RANGE Geocel has consolidated its sealant, adhesive and filler products and re-launched the range with new packaging designed to make choosing the right product easier for installers. A new ‘Powered by Dow’ mark will also highlight products that benefit from ‘Dow silicone inside’. Contractor and Trade Mate products are now available under one distinct Geocel brand, with a new naming convention: with products including Sanitary Silicone, Frame Silicone and Multi-purpose Silicone. Product Manager, Andrew Cummins said: “We’re excited to bring to market an invigorated range of products that cover a wide range of everyday applications for builders, plumbers, decorators, roofers and joiners. “Whilst Geocel’s silicone products have always benefited from the superior UV stability, temperature and weather resistance of DOW technology, this hasn’t been obvious before. As choosing a high-quality silicone is crucial to achieving a long-lasting finish, we’ve therefore also made it clearer to installers that Geocel offers the very best, with a Powered by Dow mark.” A fast-curing sealant, Geocel’s Sanitary Silicone is suitable for jobs that require sealing around sanitary units and non-porous surfaces. The company says it provides excellent unprimed adhesion, prevention against cracking, shrinking or discolouring, and remaining permanently flexible with a high movement capability. For more information please

46 SEPTEMBER 2026 PROFESSIONAL HEATING & PLUMBING INSTALLER

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PRODUCTS ROUND UP

INSTANTOR LAUNCHES NEW UFH PORTFOLIO ALTECNIC RELEASES 2026/27 GENERAL PRODUCT GUIDE Altecnic has launched its new 2026/27 General Product Guide, introducing over 130 new products alongside an expanded heat pump section. The latest edition features several new and updated product ranges across water quality, pressure management, heat pumps, and system protection, designed to help installers and specifiers meet the demands of modern building services. One of the key additions is Altecnic’s range of Unvented Cylinder Spare Components, including inlet control groups and safety relief valves. Designed to support the servicing and maintenance of unvented hot water systems, the inlet control groups combine pressure reducing valves, check valves, and safety relief valve functions into a single assembly. Also making its debut in the guide is the Caleffi Series 551 Degasser. Using vacuum degassing technology, the Series 551 continuously removes dissolved gases from heating and cooling systems before they can form air pockets. The guide also features the updated iStop® High Temperature Anti-Freeze Valve range, designed to provide passive freeze protection for heat pump installations. Further additions include seven new models within the Series BV Buffer Vessel range, available in 2500 – 8000litre capacities. The guide is available in both digital and print formats. Gary Perry, Managing Director at Altecnic, commented: "At Altecnic, we are dedicated to innovation and customer satisfaction. Our 2026/27 General Product Guide reflects our ongoing commitment to providing cutting-edge solutions that address the dynamic needs of our industry and support the energy transition." For more information please

www.rdr.link/pcc026

48 SEPTEMBER 2026 PROFESSIONAL HEATING & PLUMBING INSTALLER

Instantor has launched a new underfloor heating range. The company says it has called upon its expertise in plumbing and heating, pipe, fittings and water movement technology to develop a new portfolio that provides a solution for hydronic underfloor heating applications. The range includes seven systems – Instantor Staple-PRO™, Instantor Rail-PRO™ and Instantor Castel-PRO™ for screed and solid floor installations, Instantor Cem-PRO™, Instantor Foil-PRO™ and Instantor Pocket-PRO™ for overlay and retrofit applications, plus Instantor ChipDeck-PRO™ for suspended floors. In addition, the new range offers a choice of two pipe systems – PEX-AL-PEX and PERT-EVOH-PERT, both of which come with a 50-year guarantee; wired and wireless programmable and smart thermostatic controls; sensors and wiring centres; manifolds; mixing valves; pumps and accessories. Jim Stafford, Instantor’s Product Manager – Underfloor Heating explained: “Instantor already has extensive expertise within pipe, fittings and pumping technology. Our expansion into the underfloor heating market was a natural progression and as with all of our products, the new underfloor heating portfolio has been designed for installers by installers to offer easy-to-fit solutions and assured reliability.” For more information please

www.rdr.link/pcc027

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KUDOS ULTIMATE METALLIC FINISHES

FRÄNKISCHE LAUNCHES MLCP STREET ELBOW

The Ultimate range of showering panels from Kudos has been enhanced with the addition of metallic colour profiles. Warm brushed copper and contemporary brushed gunmetal grey profiles have been added to the range. The new finishes are now available alongside the company’s core profile finishes: chrome, matt black, brushed brass, and brushed nickel. Ultimate 10mm flat panels come in 13 sizes, Ultimate 8mm flat panels in 11 sizes, and Ultimate 8mm curved panels in 3 sizes, all standing 1985mm high, including fittings. Shower trays are available to suit all ranges. For more information please

www.rdr.link/pcc029

GEBERIT TURBOFLUSH TECHNOLOGY

FRÄNKISCHE has launched a street elbow for MLCP (Multi-layer Composite Pipes), marking what the company calls a significant advancement in its alpex MLCP system. It says that while street elbows are widely used in copper pipe installations, until now no equivalent product has been available for MLCP systems. Matt Densham, Divisional Director – Building Services for FRÄNKISCHE UK, commented: "By removing the need for an additional fitting and a short length of pipe to achieve the same offset or change in direction, installers can reduce job complexity, potentially saving both labour and material costs. "The introduction of our MLCP patented street elbow will facilitate more compact installations, which addresses a common challenge contractors face when working in confined spaces. "There remains some misunderstanding in the market around MLCP systems. Unlike plastic or copper pipework, MLCP pipe and fittings should not be mixed with products from other manufacturers, as compatibility cannot be guaranteed. "At the same time, the flexibility of MLCP pipe means installers often require fewer directional fittings than they would when working with copper or stainless-steel systems, providing additional installation benefits." The company says the patented fitting also enables more compact installations, typically reducing space requirements by around 30 per cent.

Geberit has expanded its range of WCs featuring TurboFlush technology – which is now available across the company’s Aspire and Bathroom Collections. TurboFlush technology uses an asymmetrical inner geometry to guide the flush water in a powerful vortex through the bowl, designed to ensure thorough and complete cleaning. Sophie Weston Head of Marketing for Geberit said: “We know from our research that flush performance is important to homeowners, and remains a source of anxiety for some. “With TurboFlush now available at all price points, we’re giving those retailers the opportunity to focus on the flush – providing innovative technology that boosts performance, reduces cleaning effort and delivers a whisper-quiet flush, across all price points.”

For more information please

www.rdr.link/pcc028

www.rdr.link/pcc030

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PRODUCTS ROUND UP

TRIANCO ACTIVAIR PRO HEAT PUMP RANGE

VOKÈRA PINNACLE TRAINING VIDEOS Vokèra Ltd has launched a suite of training videos to support installers working with its Pinnacle boiler range. Available on Vokèra’s official YouTube channel and presented by Technical Trainer David Iszchak, the ‘how to’ tutorials cover key stages of installation, set-up and user features. The series of ﬁfteen videos covers topics such as gas type conversion, range rating, pump cycle adjustment and condensate record settings. The company says the move demonstrates Vokèra’s ongoing focus on installer support, from initial installation to on-going servicing.

Trianco has announced that the company’s new Activair Pro air source heat pump range has been awarded the Quiet Mark certification for its 6kW, 12kW and 17kW models. The newly-launched Activair Pro range has been engineered to provide efficient, reliable heating and hot water while operating at low sound levels. Peter Beighton at Trianco, explained: “Achieving Quiet Mark certification across our 6kW, 12kW and 17kW Activair Pro models is a significant milestone for Trianco. Homeowners increasingly expect renewable heating systems that are not only energy efficient but also unobtrusive in day-to-day operation. This certification provides independent reassurance that our Activair Pro range delivers both outstanding performance and exceptionally quiet operation."

For more information please

www.rdr.link/pcc031

www.rdr.link/pcc032

ADVERTISEMENT INDEX Adveco ............................................................................ (page 37) www.rdr.link/PCC100

Pump Technology Ltd .................................................. (page 27) www.rdr.link/PCC109

Arctic Hayes Ltd ............................................................ (page 23) www.rdr.link/PCC101

Ridgid Tools UK .............................................................. (page 11) www.rdr.link/PCC110

Baxi Heating UK Ltd ...................... (page 2 inside front cover) www.rdr.link/PCC102

RJW Engineering .......................................................... (page 47) www.rdr.link/PCC111

Clivet Group .................................................................. (page 35) www.rdr.link/PCC103

Sanbra Ltd ...................................................................... (page 23) www.rdr.link/PCC112

Diversitech International .............................................. (page 41) www.rdr.link/PCC104

SFA Saniflo UK Ltd .................... (page 52 outside back cover) www.rdr.link/PCC113

Hans Sasserath GmbH & Co KG .................................. (page 9) www.rdr.link/PCC105

Shore Laminates Ltd .................................................... (page 25) www.rdr.link/PCC114

Knipex Tools UK ............................................................ (page 29) www.rdr.link/PCC106

Toolfair .............................................................................. (page 15) www.rdr.link/PCC115

Polypipe Ltd .................................................................... (page 17) www.rdr.link/PCC107

Wavin Ltd .......................................................................... (page 4) www.rdr.link/PCC116

Powered Now Limited .................................................. (page 13) www.rdr.link/PCC108

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PLAYTIME Head over to the PHPI YouTube Channel to view videos on everything plumbing & heating: from fittings to filters – press tools to pumps. The videos have been put together with input from both manufacturers and installers to bring you the latest details. Just type in the rdr.link codes listed to watch... & don’t forget the popcorn!

GRUNDFOS SOLOLIFT 2 Macerator In this video Karl Hills offers a guide on how to upgrade a macerator by fitting the Grundfos SOLOLIFT 2. Called in to replace a faulty macerator unit at a rental property, Karl examines the problem, discusses the benefits of the replacement unit – a Grundfos SOLOLIFT 2 – and demonstrates the replacement process. Discussing his selection, Karl notes: “It's really easy to pick which model you need. There's only five in the range and they're suited for all different types of scenarios, whether it is depending on different outlets or inlets and where it is in the house. It's also a really compact design, so it's really great for fitting in those really tight situations, where it's up against a bath or behind the loo where you've got not much of a gap.” To watch the video…

www.rdr.link/pcc033

SENTINEL X100 INSTADOSE

WELD-ON 717 ECO In this video, Jay from J.W. Watters Plumbing and Heating, takes a look at a range of solutions from WELD-ON, including the company’s 717 ECO PVC cement. Trying out the 717 ECO on a pipe repair under the customer’s sink, Jay runs through the installation process and demonstrates both the company’s East Twist Can Opener and its Dauber application tool. Following the installation, Jay provides some thoughts on the odour from the 717 ECO noting: “I must say, the odour is very, very minimal.”

In this video, Chirag from CP Utility Solutions, takes a look Sentinel’s X100 InstaDose inhibitor. Whilst undertaking a boiler service at a property Chirag demonstrates how and where Sentinel’s InstaDose can be used to add inhibitor to a heating system. He says: “As you can see, it's quite tight to the bottom of the boiler, but with our InstaDose, it shouldn't give us any problem.” After preparing the ﬁlter and using Sentinel’s X100 InstaDose Chirag concludes: “See, the good thing is you don't have to worry about having to tip the pouch upside down or anything. Hold it in any orientation and just squeeze.” To watch the video… www.rdr.link/pcc035

To watch the video… www.rdr.link/pcc034

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