Watch this training video for making Earth Loop Geothermal Slinkies. Geothermal technology takes advantage of the earth's natural heat-storing ability. A geothermal system include three main pieces of equipment: underground piping, a heat pump and an air-handling system. The geothermal process is based on a simple premise: Below the frost line - usually about six feet deep – the earth is a constant temperature of about 50 degrees Fahrenheit all year long.
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