Obviously this is highly dependent on where you live…which gets back to my original point that there are so many variables it probably isn’t possible to declare

Obviously this is highly dependent on where you live…which gets back to my original point that there are so many variables it probably isn’t possible to declare one option better for the environment. Fwiw, in the UK I actively turn heat on and off depending on when it’s needed. It would never, ever, be on when I’m out, unless I was going out of town for a while and had to consider things like frozen pipes.