New Build Thermostat

RandomGuy87

Hi all. 

I have the attached Thermostat in my house. One in my bedroom at the front of the house and one in the hallway downstairs. 

As you can see, the temperature appears to be accurate. 

I use the above Thermostat in my boys bedroom which is at the rear of the house. For example, his room is currently show 2 degrees cooler than the main bedroom. 

His bedroom at night is roughly around 17 degrees whilst the main bedroom is closer to 20/21. This is causing me issues with putting the heating on during the night as I'd need to set the temperature to higher for it to kick in. 

Does anyone have any experience or advice on how I can get around this please? 

thermo

[Deleted User]

I assume that you have checked that the radiators are properly balanced? It is not something that sub-contracted heating installers are known for as it takes time to get it right.

Different parts of the house will heat at different rates. That said, you need to check that the radiator is properly sized for the room it is in. Another option would be to fit eTRVs that control the boiler through a controller such as Evohome (not a cheap option).

RandomGuy87

[Deleted User] said:

I assume that you have checked that the radiators are properly balanced? It is not something that sub-contracted heating installers are known for as it takes time to get it right.

Different parts of the house will heat at different rates. That said, you need to check that the radiator is properly sized for the room it is in. Another option would be to fit eTRVs that control the boiler through a controller such as Evohome (not a cheap option).

I'm not sure about them being properly balanced but the temperatures in my original post are the room temperatures without the heating being on.

As my room appears to be warmer, it seems difficult to put the heating on without setting it to 23+ degrees. 

FreeBear

Rooms with two or more external walls will often be colder than rooms with just the one wall. Keeping windows closed and opening up internal doors help. With doors open, warm air from the rest of the house can circulate, and it also helps in combating condensation.

peter3hg

Fundamentally you need to turn down the radiator in the main bedroom or turn up the radiator in the other room. Ideally you would have the system properly balanced as Dolor says but you can do a cruder adjustment by trial and error to improve it.

First check that the TRV in the other bedroom is set right. If the radiator in that room turns off before the main bedroom then turn it up. 3 on the TRV is usually about 20C but it is quite crude so you might need to tweak it.

If that room still doesn't get warm enough before the thermostat clicks off then you will need to adjust the radiator in the main bedroom.
The radiator in that room probably won't have a TRV if that is where the thermostat is, but often one side of the radiator will have a manual valve with a faint + & - on that you can turn. Try carefully turning it fully to + and then to - to assess the range and then set it half way between. If your room still gets too hot in relation to the bedroom then increment it towards the - until it is about right. If your room doesn't heat enough then adjust it towards the +.

_Jem_

I have the same problem cold bedroom in a new build,  One thing that helped was putting masking tape over the window trickle vents, it's still a bit colder so for now i have the bedroom trv turned up higher.

Normally i like the idea of trickle vents but these are terrible cold air still coming out when the flaps are closed. I don't need trickle vents anyway as I'm in the habbit of opening the windows for a short while in the morning. 

Lorian

Sounds like balancing as others have said - check if the lockshield valve in the child's bedroom is restricting the flow. If it isn't try turning the lockshield in your bedroom off a little. Better to balance using the lockshields first rather than changing the TRV temps. these are the valves the opposite ends to the TRVs. Plenty of YouTube videos on balancing.