WarmGuide Diagnostic (UK)

Find the right heating fix in under a minute

Pick what matches your home right now. You’ll get sent to the most relevant guide without guessing.

Step 1 of 2
Choose the main symptom

What’s the main issue?

Pick the closest match. Next screen gives you the exact page.

Stage 1

If you smell gas, can see a leak, or the boiler shows a fault code you don’t recognise, stop and get a qualified engineer. In an emergency call the National Gas Emergency Service on 0800 111 999.