The system can create free hot water in the summer and deliver substantial hot water savings in the winter. And, they are better for the environment.
Compared to conventional heating and cooling systems, homeowners can save 30-70 percent in heating costs and 20-50 percent in cooling costs.
How They Work
Geothermal heat pumps are electrically powered systems that use the earth’s relatively constant temperature to provide heating, cooling and hot water for homes and commercial businesses.
The earth’s natural heat is collected in winter through a series of pipes, called a loop, installed below the surface of the ground or submersed in a pond or lake. Fluid (water and anti-freeze solution) circulating in the loop carries this heat to the home. An indoor Geothermal system then uses electrically driven compressors and heat exchangers in a vapor compression cycle to concentrate the Earth’s energy and release it inside the home at a higher temperature. In typical systems, duct fans distribute the heat to various rooms.
In the summer, the process is reversed in order to cool your home. Excess heat is drawn from the home, expelled to the loop, and absorbed by the earth. Geothermal systems provide cooling in the same way that a refrigerator cools – by drawing heat from the interior, not by injecting cold air.
Because the system is using the mild temperatures of the earth, the system has less work to do and therefore, lowers your operating costs of heating and cooling your home.