Geothermal Heat Pumps (also known as Water Source Heat Pumps)
Geothermal heat pumps are similar to air-source heat pumps, but instead of using heat found in outside air, they rely on the relatively constant heat of the earth (thermal energy) to provide heating, air conditioning and, in most cases, hot water.
While ground-loop and water-loop heat pump systems may be slightly affected by higher temperature fluctuations, they are not as sensitive to temperature changes as air-source heat pumps. The reasons are that ground and water temperatures, a few feet below the Earth’s surface, stay relatively constant throughout the day or year. For this reason, ground loop heat pump systems remain extremely efficient throughout the year in virtually any climate.
How It Works
In winter, geothermal heat pump systems collect the Earth’s natural heat through a series of pipes made of copper or plastic, called a loop, installed below the surface of the ground or submersed in a body of water. Fluid circulating in the loop carries this heat to the home. There, an electric compressor and a heat exchanger concentrate the Earth's energy and release it inside the home at a higher temperature. Ductwork distributes the heated air to different rooms. In summer, the process is reversed in order to cool the home. Excess heat is drawn from the home, expelled to the loop, and absorbed by the Earth.
Case studies have shown incredible savings versus even the highest efficiency furnaces and air conditioning systems. The reason? Fluctuating fuel costs… With the cost of fossil fuels continuing to rise, geothermal heat pumps look better and better each day. They allow greater savings and comfort in virtually every application.We have experience in the design, install, and service of once-through and closed loop geothermal heating and cooling systems.
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