A heat pump that uses the earth as a heat source and heat sink.

See Ground Source Heat Pump.

A geothermal heat pump can help to heat your building.

a heat pump that draws heat from or removes heat to the ground or ground water, instead of air

an electrically-powered device that uses the natural heat storage ability of the earth and/or the earth's groundwater to heat and cool your home or business

a very efficient method of heating and cooling a home

A heat pump that uses the constant underground or underwater temperatures as supply.

a space heating/cooling system which moves heat from and to the earth, as opposed to making heat using a fuel source. Geothermal heat pumps take advantage of the almost constant temperature just a few feet underground -- usually warmer than the air in winter and cooler than the air in summer.

A geothermal heat pump system is a heating and/or an air conditioning system that utilizes the Earth's ability to store heat in the ground and water thermal masses. This system will take advantage of a land mass as a heat exchanger to either heat or cool a building structure. These systems operate on a very simple premise; the ground, below the frost line, stays at approximately 50 °F (10 °C) year round and a water-source heat pump utilizes that available heat in the winter and puts heat back into the ground in the summer.