Residential Boiler Maintenance


A boiler keeps the water in your house warm, even in winter. These boilers are sturdy workhorses that can last for years. However, a faulty one can leak the poison carbon monoxide and, in extreme cases, explode. Keeping your boiler regularly maintained is essential for keeping your home safe from unseen dangers.

Regular Maintenance

  • Have your boiler checked every 12 months to ensure that all components are working properly by a CORGI (Council of Registered Gas Installers) engineer. These engineers are certified to work with gas products. The technician ensures your boiler is structurally intact, that it's installed properly and that no pipes are clogged, and tests for carbon monoxide leaks. As a homeowner, you can also install a carbon monoxide detection unit near your boiler to make sure it's not leaking. These devices are relatively inexpensive for the peace of mind they can bring. If you rent, your landowner is responsible for setting up these annual checks and is responsible for keeping all flues and pipes for the boiler clean.

Boiler Pressure

  • Check the pressure on your boiler regularly. All boilers are fitted with a pressure gauge, usually located on the side of the unit. For small units, the pressure should only be around 12 lbs. to 15 lbs. Pressure gauges have an indicator that tells you when the pressure is too high. If the pressure is over the limit, most boilers have a release valve that you can turn or twist to relieve the pressure. If you drain it and the pressure rises immediately, contact a professional technician. You can also attempt to change the pressure regulator to keep the pressure down. Look in your owner's manual to find the correct way to do so.

Boiler Care

  • Take simple preventative measures to keep your boiler running. Check the boiler room regularly to make sure it's clean. Make sure to sweep out dust so that it doesn't get inside the boiler. Dust can clog up the boiler fan, which can cause overheating. Make sure that no dust has gotten into the pilot light area. This can cause fires or cause the pilot light to go out, causing a gas leak. Make sure not to clutter the boiler. If there is a leak, giving the boiler breathing room gives you an opportunity to discover it before there's a fire or explosion. If you live in an area with hard water, descale the boiler once a year to prevent buildup of debris.


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