We don't even use our heat in the winter, I know we are cheap. We live in a townhouse with people on each side of us, we only have two walls and a roof exposed to the cold. Both neighbors love to be hot, like 85+ degrees, I can't even stand to be in there. If we run no heat at all our apartment stays around 60. The only problem is the summer, they keep it around 85-90 because they leave their air off pretty much so we end up cooling their apartment. We only use two small ceramic heaters if we are a bit cool.