Uhhh, I would say you got a serious problem-o there dude,
I got a 2800 sq ft 4 bd/3 ba house with a 1150 sq ft attached 4 car garage and the heating bill runs me 80-95 a month in the winter and 90-100 in the summer which is damn long here in south ga, and before you ask, yes I heat / cool the garage whenever I am working in it.
Todd