Definition of "BTU"

Sharon Ann Kaper
  Coldwell Banker Chicora

British thermal unit-a unit of energy associated with the creation of heat. Prior to 1929, it was defined as the amount of heat required to raised the temperature of 1 pound of water 1 degree Fahrenheit. In 1929, it was redefined as being equivalent to 251.996 calories, 778.26 ft-lb, or in electrical units, approximately one-third watt-hours. In the United States, the BTU is a standard measure of the heat-producing capabilities of various heating appliances, furnaces, and fuels.

Search Real Estate Glossary

Related Real Estate Glossary terms

Related Real Estate FAQ