How Geothermal Works As the seasons change from spring to winter, temperature fluctuates throughout the year. Some climates can vary from blazing summers to cold winters; WISCONSIN-MINNESOTA included. Did you know there is a fairly consistent temperature, regardless of climate or season, just below the ground? The Earth's crust takes in 47% of the sun's heat (energy) and is retained in the ground a few feet below the surface. WaterFurnace geothermal systems tap into this free heat source with an earth loop. This innovative technology reclaims the sun's heat providing your home or office with central heating and cooling. Geothermal Heating In the heating cycle, a WaterFurnace geothermal heat pump employs the earth loop system to extract the heat from the ground. With delivery through a traditional duct system, the geothermal system pulls heat from the loops and circulates it as warm air. Other choices are available to use that same heat energy to provide hot water heating and radiant floor heat. Geothermal Cooling During the cooling mode, cool, conditioned air is distributed throughout the house by reversing the heating process. Heat is not extracted, instead it is driven into the ground. The warm heat is extracted from your home and moved back into the earth loop. Your hot water heating can be fueled by this process as well. For more information on how to get started with a geothermal system in the WISCONSIN-MINNESOTA area, contact Comfort By Design, Inc.. Start saving on your energy bills today.