Gas boiler guides
These guides cover the boiler jobs most people ask about. Each one uses plain words and short steps. They also say clearly when to stop and call an engineer.
Some jobs are safe for anyone to do. You can top up the pressure, thaw a frozen pipe or reset a boiler. Anything inside the boiler case needs a Gas Safe registered engineer. That's the law in the UK, and it keeps you safe.
- How to top up low boiler pressure
Why boiler pressure drops, what the gauge should read, and how to top it up with the filling loop in a few simple steps.
- How to thaw a frozen condensate pipe
Boiler stopped in cold weather? A frozen condensate pipe is the most common cause. Here's how to spot it and thaw it safely.
- How to find your boiler's model and GC number
Where to find your boiler's make, model and GC number, and why you need them for manuals, parts and fault codes.
- What happens in a boiler service?
What a Gas Safe engineer checks during an annual boiler service, why it matters for your warranty, and how it differs from a gas safety check.