Checking your boiler

Checking your boiler

Regular servicing could help your boiler run more efficiently – saving you money. And unless you have boiler cover in place, you’ll need to call an engineer if things go wrong, which can be expensive. So it pays to make sure your boiler’s in order in more ways than one.

With that in mind, here are some simple steps you can take to check your boiler is working well.

Tips for checking your boiler

1. Know how your boiler works

You won’t need an encyclopaedic knowledge of boiler engineering, but reading the instructions in full can help. Learn where the switches and controls are, and what the right settings for your home should be: if you’re cold, you may have the thermostat set too low, or not have the timer set correctly.

2. Double check, is it switched on?

It’s easier than you think to accidentally turn a boiler off. Make sure it’s switched on. If it’s still not working, check your electricity supply and see if the fuse for the boiler has tripped. If you have a gas boiler, check there aren’t any service disruptions in your area; if you have an oil boiler make sure the tank tap is open on your tank is open.

3. Gently thaw your pipes

Most combination boilers have a condensate pipe that runs outside the house. These are prone to freezing, which could stop a system working. If it’s frozen, turn your system off and defrost the pipe gently with a hairdryer, hot water, or a towel soaked in hot water. While you’re there, make sure the boiler vents are clear – and once everything’s thawed, you should be able to reset your boiler and get everything going again. Then (our top tip), ‘lag’ the pipes (insulation is a cheap purchase from DIY shops), to prevent them freezing again.

4. Check the boiler pressure

Combination boilers sometimes stop working if there’s a drop in pressure. If the pressure gauge on the boiler shows it’s low, check to see if there’s a disruption to the mains supply in your area. If there isn’t, check your pipes and radiators for leaks. If there’s no leak, you can turn the boiler off and manually increase the pressure by slowly lifting the valve handle.

5. Bleed your radiators

If your radiators have cold patches (especially at the top) air could be trapped in the system. Turn off your boiler; let it cool for a few hours. Then, use a radiator key to slowly open each valve: if it hisses, that’s air escaping. When water starts to drip from the valve, close it again tightly – this is called ‘bleeding your radiators’ – it helps to hold a towel under the valve to catch the drips. Check all the radiators, in turn.

Boiler not working – now what?

Now it’s time to get a registered engineer in. If you have Aviva Response gas boiler cover [link to product page], get in touch and we’ll send one out to you. If you don’t, you can find an engineer locally by following these links, which offer professionals who’ve registered with the appropriate organisations:

  • Gas boilers – Gas Safe
  • Oil boilers – OFTEC
  • Solid fuel and Biomass – HETAS

Get expert help fast if your heating breaks with Aviva Response – from just £12.49 a month. Includes an annual gas boiler service and unlimited call outs as standard. And if we can’t fix your boiler, we’ll replace it. More about our gas boiler and heating cover.

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