Get help from our Instant Expert

Got a problem with your gas boiler? Instant Expert is our free online tool that guides you through some simple tricks that could help get things working again.

Got cover? Log in to book a repair.

Try it now

Engineer know-how, made easy

Our engineers helped create Instant Expert. Their expertise could help you fix some of the most common boiler problems.

Simple step-by-step instructions 

Quick and easy fixes only, no tools required

100% free to use
Help me fix my boiler

How it works

Share a few details about the problem, then try the fixes we recommend.

Help me fix my boiler

Need an expert? Our engineers are ready when you are

Not all problems are simple enough for a DIY fix. If your boiler needs a professional repair, you’ll be in good hands with a British Gas engineer. 

  • All parts and labour included

    12-month guarantee on our work

No heating or hot water? 80% of customers who tell us by 11am get an engineer the same day.1

Why try our Instant Expert?

Save time and money

Lots of boiler problems are surprisingly easy to fix. We’ll tell you if that’s the case for your issue – and then tell you what to do.

Get advice you can trust

Our engineers repair boilers day in, day out – up and down the country. Instant Expert is built on all that know-how.

Learn useful new skills

No idea how to re-pressurise your boiler or even reset it? No problem. We'll explain it all, step by step.
 British Gas Membership

Join membership to save at least £15 on boiler repairs and more

 

  • Membership is FREE, with no hidden costs

    Exclusive discounts on repairs, servicing, Hive and more

    Prizes and giveaways, including a year’s free energy 2

    Our members have saved over £2 million since 2025

Additional information

  1. Based on 2025 performance data, 80% of customers who contacted them before 11 am received a same-day service.

  2. The energy prize draw is only open to British Gas energy customers who are British Gas members.