On 12 Dec, 12:20, wrote:
In our house it's much harder to heat the kitchen than the other rooms
mainly becaus it is in a separate single story section at the back
with 3 exterior walls and poor insulation in the roof.
To heat the kitchen properly we need to have the boiler on quite high
which makes the other rooms too hot.
I tell my missus we should keep the boiler on high and turn the
thermostatic valves down in the other rooms but she thinks this will
use a lot more energy than turning the boiler down and having the
thermostatic valves fully open in the other rooms and put up with the
chill in the kitchen.
How can I explain to her that she is wrong?

Use lockable TRVs