alt Hacker NewsIn the winter, I keep the thermostat at frigid temperatures when I am home alone and jack it up to warm just before any one else gets home. My thinking is that it is wasteful to warm up the entire house when it's just me since I can put on a sweater but I don't want to subject others to my, shall we say, quirks.
I keep meaning to calculate how much I am actually saving by freezing my butt off. My guess is it'll work out to something like $0.75 a day or something equally trivial.
Depending on the kind of heating system you have and the temperature differences you talk about it can be cheaper to heat the house to a constant temperature (because your heating can run more efficiently under lower load).