It's 19C in the living room right now. That's comfortable temperature. Don't like a warm bedroom. Only thing I do in the bedroom is sleep so no need for heating. There's a fan if it gets too hot in the summer though.
No damp problems in this house after 119 years so I'd guess there won't be ever. I doubt that they were heating all the rooms at once back in 1901.
Heating rooms that aren't in use is a waste of money IMO. My total bill for power each month is only £60.
Current Lash Up:
TEAC VRDS 701T > Sony TAE1000ESD > Krell KSA50S > JM Labs Focal Electra 926.