How Geothermal Works As the seasons change from spring to winter, temperature fluctuates throughout the year. Some climates can vary from sweltering summers to cold winters; Southeast Missouri included. Did you know there is a pretty 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 maintained in the ground a few feet beneath the surface. WaterFurnace geothermal systems draw from this free heat with an earth loop. This ingenious technology salvages the sun's heat providing 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 extract heat from the ground. As the system draws heat from the loop it distributes it through a traditional 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 In the cooling mode, the heating process is reversed - creating cold, conditioned air throughout the home. Instead of extracting heat from the ground, heat is extracted from the air in your home and either moved back into the earth loop, or used to preheat the water in your hot water tank. For more information on how to get started with a geothermal system in the Southeast Missouri area, contact Lundy HTG. & CLG.. Start saving on your energy bills today.