I've lived in my brand new house for just over a year now. It is semi detached with 3 bedrooms (master with en-suite, 2nd similar size to master, 3rd small box room) and I am finding that my small bedroom and the en-suite to my main bedroom won't hold their temperature... I'm wondering if there is any advice I've not considered.
Having spoken to the developer about this back in the early part of this year, they suggested it was due to both rooms having 2 walls each exposed to the outside and sent a plumber round to "balance the radiators", which helped somewhat in the other rooms, but I'm still facing these 2 rooms being colder.
The small bedroom has a single, small radiator the width of the window - I believe that this should be enough given the size of the room, whereas the ensuite only has a half-height towel heater to provide the heating. Again the en-suite isn't a gigantic room so should be sufficient to keep it warm, however this room has an extractor that I'm unsure how well it is sealed while off.
Could there be something more at play here? Perhaps a lack of cavity wall insulation? Perhaps poorly sealed windows/sills?
I've had a bluetooth thermometer/hygrometer in each of the rooms for the last week to try and highlight the issue. I began with the doors to these rooms open to try and acclimatise them to the rest of the upstairs, and then closed the doors to show how the temperature drops off. For info, the monitors were places in the middle of the rooms.
FYI - The thermostat here was set to 18.5C
Upstairs floor plan:
- Green: Thermostat
- Blue: Radiators
- Red: Rooms in question