this thread has really got my thinking....
I see a lot of people here who have their nest or other schedules set to have a low temperature through the night. like 12c etc.
I will be honest here I had the night time temp to 19/19.5c but in the last few nights I changed it to 18.5C (thinking of lowering this a bit)
The thing I don't understand is this, let's assume that tonight I dropped the temperature to 14C at 12am, then I put the heating on for 18.5C at 6:30
Surely this big jump (from 14c to 18.5C) will be consuming much more energy than keeping the temps around about the same temperature all night long?