How do Geothermal Systems Work?
Geothermal systems rely on holes drilled into the ground and loops installed for operation. A non-toxic mixture of antifreeze and water is circulated through the loops in the earth and back up to the surface. As the mixture circulates, it picks up the earth's natural heat. The mixture then goes through a ground source heat pump, the primary part of the system. The heat is then transferred to duct work or radiant floor heat (whatever is desired) to heat the entire house. In summer months, the process is reversed, heat is extracted from the air within the house and transferred back to the earth. The process can also send heat back to your hot water heater, essentially providing free hot water in the summertime.