How Geothermal Works As the seasons move from spring to winter, temperature fluctuates throughout the year. Some climates can vary from blazing summers to chilly winters; Northern Virginia included. Did you know there is a fairly constant 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 sustained in the ground a few feet under the surface. WaterFurnace geothermal systems draw from this free heat source with an earth loop. This innovative technology reclaims 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 pulls heat from the loop it distributes it through a conventional duct system as warm air. The same heat energy can also be put to use for a radiant floor system or domestic hot water heating. Geothermal Cooling During the cooling mode, cold, conditioned air is distributed through the house by reversing the heating process. Heat is not extracted, instead it is propelled into the ground. The warm heat is pulled from your home and moved back into the earth loop. Your hot water heating can be fueled by this technique as well. For more information on how to get started with a geothermal system in the Northern Virginia area, contact Renewable Energy Solutions. Start saving on your energy bills today.