Cost guidance

Boiler repair costs: understand the fault before approving work

Find out what affects boiler repair costs, from diagnosis to parts and access. Request repair help and discuss the proposed cost before approving work. We cover England, Scotland and Wales; Northern Ireland is not covered.

Book a boiler repair today

Before your repair

What you need to know

A cost can only be confirmed after a safe diagnosis. The fault code, boiler model, symptoms, parts required and access all affect the final repair route.

Safety verdict

Start with visible, external checks only. If you are uncertain, arrange a qualified engineer rather than guessing.

If you smell gas, call 0800 111 999.

Safe checks before you call

Record the fault code, if one is displayed.
Note whether you have heating, hot water, both, or neither.
Do not agree to internal boiler work without a clear diagnosis.

What an engineer checks

Find the cause before deciding on a repair.

Identify the root cause rather than quoting from a code alone.

Explain the parts required and whether a further visit is needed.

Give clear repair options and costs before work proceeds.

Your repair enquiry

From first contact to an agreed repair

Contact us. Send your details and symptoms, or call if the loss of heating or hot water is urgent. Discuss availability before a visit is arranged.
Diagnose the problem. The attending engineer assesses the boiler and heating system safely to identify what is causing the issue.
Explain the cost. Discuss the diagnosis, proposed work, required parts and cost before approving a repair.
Confirm the repair. Agree the work and timing, including any parts order or return visit that may be needed.