Boiler losing pressure? How to repressurise it
Why boiler pressure drops, how to top it back up safely using the filling loop, and the warning signs that mean the pressure loss needs a proper repair.
Advice
Heating and plumbing advice
Honest, practical guides from our engineers. Some problems you can safely sort yourself in five minutes, and we would rather show you how than charge you for the visit. When a job does need a professional, each guide explains why.
How to bleed a radiator, step by step
If a radiator is cold at the top but warm at the bottom, trapped air is usually the culprit. Here is how to bleed it safely with a radiator key.
Radiator cold at the bottom? What it means
Cold at the bottom is a different problem from cold at the top, and bleeding will not fix it. What sludge does to your system and what actually works.
No hot water? Common causes and quick checks
From tripped controls and low pressure to frozen condensate pipes in winter, the most common reasons hot water stops and what to check before you call.
A note on safety. These guides cover simple checks and adjustments that are safe for householders. Never open the boiler casing or attempt any repair to a gas appliance yourself. That work is illegal unless you are Gas Safe registered, and it is what we are here for.
Tried the guide and still stuck?
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