Cold rooms in the back of the house

[19danny94]

Hello, recently bought a new build 3 bed detached house. And the back bedrooms are always cold, one is my son's room the other is mainly for drying clothes. These rooms are always cold but the rest of the house is toasty warm. We have 2 thermostats in the house, one in the hallway downstairs and one in the main bedroom. I believe the problem is the downstairs heat it heats the upstairs thermostat so quick that the upstairs rarely switches on.
Leaving the back bedrooms doors open and the main rooms shut does help with this but isn't always possible as we have a dog. Also the radiators I would like to turn down don't have any valves on them so are not adjustable.

Would adding smart TRVs to the cold rooms help?
Any guidance would be appreciated thank you.

 

[fixitflav]

Would adding smart TRVs to the cold rooms help?

No, a TRV can only reduce flow to the rad.

Also the radiators I would like to turn down don't have any valves on them

Are you sure? Sounds unlikely, can you post a photo? If there are valves, need throttling on some of the other rads.

 

[Jurassicspark]

Regarding the cold bedrooms, is the loft insulated well? If not, most of the heat will escape through the ceiling.

 

[JohnD]

the other is mainly for drying clothes.

This will make it damp, which is not good for a house.

 

[19danny94]

No, a TRV can only reduce flow to the rad.

Are you sure? Sounds unlikely, can you post a photo? If there are valves, need throttling on some of the other rads.

 

[19danny94]

Regarding the cold bedrooms, is the loft insulated well? If not, most of the heat will escape through the ceiling.

Yes the loft has a lot of insulation and the rest of the house holds heat really well. It's just the radiators are never on because according to the thermostat it's at temperature

 

[19danny94]

I think moving the thermostat would help but a pain to do

 

[Jurassicspark]

In your picture, the wheel head is the lockshield. Left loosey, righty tighty.

 

[martygturner]

You could replace the wired thermostats with a wireless models then you can move them around to produce the best heat pattern for the house. I would pop trv's on all the rads upstairs except for the room with the thermostat in it.

 

[19danny94]

In your picture, the wheel head is the lockshield. Left loosey, righty tighty.

So they do actually reduce the heat output? Feels like they just turn forever

 

[Jurassicspark]

So they do actually reduce the heat output? Feels like they just turn forever

They are only used for balancing. You need to fit thermostatic radiator valves which respond to temperature and turn the radiator on and off,.

 

[fixitflav]

Feels like they just turn forever

In that case probably the plastic cap isn't engaging with the valve spindle. Could be just a decorative cap. Maybe need a different one, or remove the cap and turn the shaft with an adjustable spanner. Likely to need to be fully closed then opened 1/2 a turn or less to get the right throttling.

 

[Mister Banks]

The picture doesn’t look like it’s the lockshield valve, the LS will be on the other end of the radiator and can only be turned with a wrench.

 

[19danny94]

The picture doesn’t look like it’s the lockshield valve, the LS will be on the other end of the radiator and can only be turned with a wrench.

This is the otherside of the radiator which as you rightly said needs a spanner to adjust. So is this the one I need to adjust or the other side?

 

[fixitflav]

This is the otherside of the radiator which as you rightly said needs a spanner to adjust. So is this the one I need to adjust or the other side?

Usually both valves are identical, it's just the caps that are different. One engages with the valve stem, so you can turn it, the other is decorative. It doesn't matter which one you throttle.