200 gallons of Propane last month and it wasn't a terribly cold month. House and DHW. House is 2800 sq ft, alot of windows and a cathedral ceiling in part. As this is my first winter in the house, I'm not sure what to expect. We are going to get an energy audit but from what I've dug into already, the walls are 2x6 construction with plenty of insulation and a plastic vapor barrier. I added insulation to the attic (1/2 house is 2 story with attic) that has to be at least R40 up there as I added R30 to the blown in fiberglass that was already up there. We do have a bunch of windows but they do face the south. I put some heavy curtains on the 12'x7' wall of windows. I also put an electric oil filled heater in the baby's room so he can enjoy 72 degree nights and not put me in the poor house. How much fuel is anyone else using?