Turning the heating back on

When heating systems sound like a kettle boiling when turned on, this could mean a build-up of sludge or limescale on your boiler’s heat exchanger, This is known as kittling and can result in restricting the flow of water within the heat exchanger causing it to overheat, steam and boil.

TURNING THE HEATING BACK ON SAFELY

Your boiler hasn’t been used very much over the past few summer months, if at all, so now’s the time to make sure everything’s running smoothly with your heating system

Being safe about this is of the utmost importance because even a small error could result in the absence of a boiler until it’s replaced or fixed, and this could take months, meaning a very cold autumn indeed. Follow our guide on how best to prepare.

BLEED YOUR RADIATORS As you haven’t been using your central heating system, you’ve probably not noticed whether your radiators have stopped working effectively over the summer. It only takes one radiator which isn’t heating fully like the others to determine it needs bleeding.

Bleed any under-performing radiators to remove trapped air. It’s also worth noting that thermostatic radiator valves can become stuck if they’ve been left closed for long periods, which means they won’t work when it comes to turning the heating on again. So it’s important to keep them open as much as you can during the summer months

SWITCH YOUR BOILER ON GRADUALLY Again, you’ve probably had your radiator switched off for most of the summer, although it’s a good rule of thumb to fire it up once or twice a month to help prevent a build-up of things like dust and corrosion, while also helping to flag up any other potential issues before switching back on permanently when the weather gets colder. If you haven’t been doing this throughout summer, and it’s not quite cold enough yet, worry not because there’s still time for you to do it before the chill of autumn descends.

CHECK FOR FAULTS Problems with your boiler are most likely to occur during long periods of inactivity. When heating systems sound like a kettle boiling when turned on, this could mean a build-up of sludge or limescale on your boiler’s heat exchanger, This is known as kittling and can result in restricting the flow of water within the heat exchanger causing it to overheat, steam and boil. Ensure there are no issues with your gas supply before trying to reignite the pilot light. This could be caused by a broken thermocouple that’s stopping the gas supply or maybe even a draught blowing the light out altogether.