BoilerFaultCodesBoiler guides & tips
Plain English answers to common boiler problems. Written for UK homeowners — no technical knowledge needed.
Winter
Frozen condensate pipe: fix it in 10 minutes
The most common winter boiler fault — and one you can safely fix yourself without an engineer.
10 min read
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Maintenance
Low boiler pressure: how to repressurise
Step-by-step guide to using the filling loop to top up your boiler pressure safely.
8 min read
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Basics
How to find your boiler fault code
Digital displays, LED flash patterns, indicator light combinations — how to read your fault code depending on your boiler type.
5 min read
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Buying advice
When to repair vs replace your boiler
How to decide whether a repair is worth it or whether it's time for a new boiler.
Coming soon Coming soon
Maintenance
What happens during a boiler service?
What a Gas Safe engineer checks during an annual service and why it matters.
Coming soon Coming soon
Buying advice
Boiler cover: is it worth it?
What boiler cover actually covers, how much it costs, and whether it's right for you.
Coming soon Coming soon
Not sure what's wrong?
Use our symptom checker to describe what your boiler is doing — no fault code needed.