The data on house heating fuel were obtained from Housing Question 13 in the 2007 American Community Survey. The question was asked at occupied housing units. The data show the type of fuel used most to heat the house, apartment, or mobile home.
This category includes gas piped through underground pipes from a central system to serve the neighborhood.
This category includes liquid propane gas stored in bottles or tanks that are refilled or exchanged when empty.
Electricity is generally supplied by means of above or underground electric power lines.
This category includes fuel oil, kerosene, gasoline, alcohol, and other combustible liquids.
This category includes coal or coke that is usually distributed by truck.
This category includes purchased wood, wood cut by household members on their property or elsewhere, driftwood, sawmill or construction scraps, or the like.
This category includes heat provided by sunlight that is collected, stored, and actively distributed to most of the rooms.
This category includes all other fuels not specified elsewhere.
This category includes units that do not use any fuel or that do not have heating equipment.
Since 1996, the American Community Survey questions have remained the same.