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BoilerBuddy · symptom triage

What's your boiler doing right now?

Tick the symptoms that match. BoilerBuddy returns a ranked list of likely causes for a Worcester Bosch combi (or any combi, if you tell us the make is something else), the safe checks to try first, and a clear next step when it's time to call a registered engineer.

No account needed
No app to install
Demo ruleset · v1

Already have a code?

I have a fault code
Skip the symptom questions and search the fault-code directory by code or boiler manufacturer.

A fault code is a starting point, not a diagnosis. Follow the safe guidance and call an engineer when it says to.

Search fault codes
Tell us what your boiler is doing
Pick everything that matches. We'll suggest likely causes and what to try at home.

Worcester Bosch uses the brand-specific ruleset. Every other brand routes through the generic combi lookup.

Tick all that apply. Pick at least one — we need a signal to triage from.

Optional, but the exact code is the single most useful signal.

This is guidance, not a diagnosis. No account needed.