Our new house has a propane tank and we use propane for heat, cooking, and hot water. I cannot believe how expensive it is compared to natural gas and I also cannot believe how fast we can go through a tank. Our supplier says a 2000 square foot home should go thru 2-3 tanks per year (tank holds 500 gallon). We have a programmable thermostat and turn way down at night and then again during day when all are at work and school. We are careful with showers, and rearely run the dryer.(line dry) Anyone have any advice for this propane newbie? How much propane do you use?