Radiator cold and takes ages to heat up

[runiuksp]

Hello all,

I've 5 radiators in flat.

2 with TRV(bedrooms) and the rest with normal valves (bathroom, lounge and hall).

When all of my radiators are fully open but only two (the closest to the boiler) heat up quickly (one with trv and the one in bathroom).

Radiator in loung is huge and it takes quite a while to heat up.

The biggest problem is the one in the second bedroom.

If I close all the others (apart from bathroom as it doesn't matter if it's shut or not it's always hot) it eventually heats up but it's not very hot...

I've noticed it has a TRV installed on return side.

Also the feeding pipe gets hot as it should but not the whole radiator.

Is it blocked on the connection somewhere...?

I did try bleeding all radiators. I've also checked the pressure and it's on 1.5.

Not sure if there's anything else I can do before calling plumber...

Many thanks

 

[HERTS P&D]

Turn off the hot rads and open the rest, once hot then close that rad until you are left with the lounge rad, if it heats up then its down to have the rads balanced.

See FAQ

Andy