U.S. Department of Energy - Energy Efficiency and Renewable Energy

Geothermal Technologies Program – GeoPowering the West

Geothermal Heat Pumps

Photo of a happy homeowner in Colorado with his geothermal heat pump.

The geothermal heat pump, also known as the ground source heat pump, is a highly efficient renewable energy technology that is gaining wide acceptance for both residential and commercial buildings, with over a million installed in the U.S. today. Geothermal heat pumps are used for space heating and cooling, as well as water heating. Its great advantage is that it works by concentrating naturally existing heat, rather than by producing heat through combustion of fossil fuels.