Geothermal Heat Pumps

Geothermal heat pumps (GHPs), sometimes referred to as GeoExchange, earth-coupled, ground-source, or water-source heat pumps, have been in use since the late 1940s. They use the constant temperature of the earth as the exchange medium instead of the outside air temperature.


Geothermal heat pumps take advantage of the nearly constant temperature of the Earth to heat and cool buildings. Below the Earth’s surface at about fifteen feet of the Earth, maintains a temperature of approximately  between 55F. This temperature is warmer than the air above it in the winter and cooler in the summer.

Geothermal heat pump systems consist of three parts: the ground heat exchanger, the heat pump unit, and the air delivery system (ductwork). The heat exchanger is a system of pipes called a loop, which is buried in the shallow ground near the building (either vertically or horizontally). A fluid (usually water or a mixture of water and antifreeze) circulates through the pipes to absorb or relinquish heat within the ground.

Heat pumps work much like refrigerators, which make a cool place (the inside of the refrigerator) cooler by transferring heat to a relatively warm place (the surrounding room), making it warmer. In the winter, the heat pump removes heat from the heat exchanger and pumps it into the indoor air delivery system, moving heat from the ground to the building's interior. In the summer, the process is reversed, and the heat pump moves heat from the indoor air into the heat exchanger, effectively moving the heat from indoors to the ground. The heat removed from the indoor air during the summer can also be used to heat water, providing a free source of hot water.

Geothermal heat pumps use much less energy than conventional heating systems, since they draw heat from the ground. They are also more efficient when cooling your home. Not only does this save energy and money, it reduces air pollution.



Low Heating Cost

Cost savings can be as much as 80% over the fossil fuels and it also uses significantly less electricity than standard heating systems. Geothermal heating uses Earth’s heat which is a renewable energy source.


Geothermal energy is 48% more efficient than gas furnaces and even 75% more efficient than oil furnaces. There are also very low levels (sometimes none) of the air pollutants and greenhouse gases making it from this point of view as highly ecologically acceptable solution.

Low Cost Maintainence

The system has fewer moving parts and is protected from outdoor elements, which requires minimal maintenance.

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