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Independent answers on heating British homes Updated 15 October 2026

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Warm rooms, hot water and a boiler you understand.

Heating Questions is an independent guide to heating British homes: what the boiler pressure should be, why a radiator stays cold, what a fault code means, how an EPC is worked out and when a job needs a Gas Safe registered engineer. We don’t sell, install or repair heating.

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Radiators & central heating 1,304
Damp, mould & fresh air 1,297
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Keeping cool 636
Thermostats & controls 331
Boiler fault codes 277

Common questions

What should my boiler pressure be?
How do I top up my boiler pressure?
What do the numbers on a radiator valve mean?
What does Vaillant F28 mean?
What is my EPC rating?
Why is my radiator cold?
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