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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.

Around the house

Boilers 1,968
Heaters, fires & stoves 1,371
Insulation, EPC & bills 1,339
Radiators & central heating 1,304
Damp, mould & fresh air 1,297
Heat pumps & solar 1,165
Hot water & showers 1,156
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?
Why is my heating not coming on?
Why is there condensation inside my windows?

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