How Geothermal Heating and Cooling Works
Geothermal renewable energy draws upon the Earth’s consistent temperature. Even though the average Louisville air temperature ranges from about 25˚ to 90˚ throughout the year, the earth’s temperature just four to six feet below the surface remains somewhat constant, 50˚– 60˚. This is because about 47% of the sun’s energy (heat) is absorbed by the ground as it hits the Earth’s surface. Geothermal systems heat and cool your home by tapping into this free, renewable energy with an earth loop.