Aluminum is the most abundant metallic element in the Earth's crust. Bauxite ore is the main source of aluminum. Aluminum is used in automobiles and airplanes (36%), bottling and canning industries (25%), building and electrical (14%) and in other applications (25%).
A: The average propane consumption per year for whole-house heating is estimated to be between 1200 and 1500 gallons per year for a 2,200 square foot home. However, the amount of propane a household uses varies depending on its specific uses in the household.
1 Heating a home with propane gas costs half as much on average than heating with electricity (U.S. Department of Energy). 2  Propane-fueled furnaces last 15-20 years â thatâs 5-10 years longer than electric heat pumps, on average.