Gas boiler maintenance

Look after your boiler and it'll look after you. Try the following top tips to keep your home's heating healthy.

But remember, central heating troubles can be tricky to solve, so if you ever get problems with your boiler it's always best to call in a Gas Safe Register approved heating engineer to fix the problem safely.

And if you ever suspect a gas leak, contact the National Gas Emergency Service immediately on 0800 111 999.

Boiler maintenance dos and don'ts

  • Run your heating regularly
    Run your heating at least once a month, even in summer, to keep it running efficiently and clear the boiler pump of any grit that gathers when it's not in use.
  • Service your boiler
    Do get your boiler checked once a year by a Gas Safe Registered engineer to ensure that it's running smoothly and safely.
  • Fit a detector
    Do fit a carbon monoxide detector to warn you if there's a leak. If a leak occurs call the National Gas Emergency Service immediately on 0800 111 999.
  • Avoid blockages
    Don't ever cover your gas boiler or block the air vents. Make sure the outside flues aren't blocked.
  • Get a CP12 Certificate
    If you're renting your home, it's your landlord's responsibility to get all gas appliances, including the boiler, inspected every year. By law they must also provide you with a copy of the CP12 Gas Safety Certificate.

Important information regarding our DIY help and advice

We try to make the advice on our website ( as useful and reliable as possible. However, the purpose of this advice section of the website is to provide homeowners and private landlords with general guidance and useful tips only. It doesn't necessarily deal with every important topic or cover every aspect of the topics with which it deals and might not be relevant or appropriate in all circumstances. It is not designed to provide professional advice or financial advice and should not be relied on as such. Click here to read the disclaimer in full.