How Geothermal Works As the seasons change from spring to winter, temperature fluctuates throughout the year. Some climates can range from sweltering summers to freezing winters; Mountain Home included. Did you know there is a fairly constant temperature, regardless of climate or season, just below the ground? The Earth's crust absorbs 47% of the sun's heat (energy) and is sustained in the ground a few feet below the surface. WaterFurnace geothermal systems tap into this free heat source with an earth loop. This creative technology salvages the sun's heat supplying your home or office with central heating and cooling. Geothermal Heating During the heating cycle, a WaterFurnace geothermal heat pump uses the earth loop to draw heat from the ground. As the system draws heat from the loop it distributes it through a conventional duct system as warm air. The same heat energy can also be used for a radiant floor system or domestic hot water heating. Geothermal Cooling Cooling the air is just the reverse process used in the heating cycle. Warm air is pushed by the geothermal heat pump into the ground. By getting rid of the warm air, all that is left is cool air dispersing throughout your home. Heating your water during this process is "free". For more information on how to get started with a geothermal system in the Mountain Home area, contact Custom Heating & Cooling Inc.. Start saving on your energy bills today.