That sounds high to me too. We have a house in Moultonborough with 2,600 of living space with an unfinished, but heated, basement. There are two separate propane fired hot air furnaces (one for the first floor and basement and one for the second floor), and propane is used for the clothes dryer, cooktop and oven, fireplace and generator. The house is 3 years old and is well insulated, although not Energy Star rated. During the winter of 2014 to 2015 we used 940 gallons of propane. We live in the house full time.
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