Radiators not heating in new build

gas112 · 7 Oct 2026

is the valve under that filter pointing same way as the top one

bramish · 7 Oct 2026

gas112 said:
is the valve under that filter pointing same way as the top one
View attachment 423765

No, that one is horizontal. Turned it vertical (after checking with Google because I know nothing) and now everything is working. Thank you sir!

CountryFan · Thursday at 12:08 AM

bramish said:
It is on zonal heating. One thermo upstairs and one down. How does that affect it?

If the valves weren’t working properly, but see you now have it working.

CountryFan · 2026-10-14T12:23:58+0100

marinareyna said:
If all the radiators are cold but the boiler fires up, it could be a circulation issue or a problem with a valve. Since it’s a new build, I’d contact the landlord or developer rather than start taking anything apart.

Are you a bot? The problem has been sorted

endecotp · 2026-10-14T14:44:45+0100

CountryFan said:
Are you a bot?

Yes, it’s a bot. But what is it trying to achieve???

Edit: just found a link in one of its other posts.

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Radiators not heating in new build

gas112

bramish

CountryFan

CountryFan

endecotp

DIYnot Local

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