Quick fixes before you call — and when to stop and call us instead.
Some boiler problems are quick to sort yourself. Others aren't worth the risk. Below are a few common issues, honest advice on what you can try safely, and when it's time to hand it over to a professional.
A note on safety
The tips below are safe checks anyone can do — no gas or heating engineer qualifications required. By law, only Gas Safe registered engineers can work on gas appliances, so anything beyond these simple checks (opening up the boiler casing, working on gas or flue components, or attempting repairs) should always be left to a qualified professional.
All work carried out by Boiler Priority is done by a Gas Safe registered engineer.
Something not on this list, or not sure what's going on?
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Boiler Hints & Tips
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If your radiators aren't heating properly or your boiler display shows low pressure, this is often a simple fix.
What to check: Most boilers have a filling loop (usually a grey or silver braided hose) that lets you top up pressure to the recommended level — check your boiler's manual for the exact target reading.
Pressure keeps dropping again after a day or two? That usually means there's a leak somewhere in the system rather than a one-off issue, and it's worth getting it looked at properly. [Message Andrew on WhatsApp].
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if your boiler has cut out and is showing a fault code, a frozen condensate pipe is one of the most common causes in cold weather — especially overnight.
What to check: Look for the white plastic pipe that runs from your boiler to an outside wall. If it's iced up, a warm (not boiling) water and cloth wrap around the pipe can often clear it.
Still not working, or the fault code won't clear? This is when it's worth stopping — repeatedly resetting a boiler with a genuine fault can cause further damage. [Message Andrew on WhatsApp] and we'll get it sorted.