How do Ground Loops work?
Just a few feet below the ground’s surface, the earth maintains a steady 50-55 degrees no matter what the temperature of the outside air. This difference in temperature allows the earth to act as a heat source in winter and a heat sink in summer. A geothermal heat pump (located inside the home) captures this energy by circulating thermally conductive fluid through the buried ground loop.
In winter, the fluid absorbs heat from the warmer earth and carries it into the heat pump, where it enters a heat exchanger and is used to warm your home. In summer, the process is reversed when the home’s heat is captured and released into the cooler ground, leaving your home comfortably air-conditioned.