We are not talking about that kind geothermal, the image is a bit deceiving. Residential geothermal is a highly efficient and renewable way to both heat and cool your home.Basically you run a set of pipes in what is called a loop, underground where the temperature is a constant 55 degrees. In the winter the water and environmentally safe antifreeze solution is run through pipes and into a heat pump that extracts the heat and transfers it to a blower or radiant source to heat your home. In the summer the process is reversed and the house is cooled. It can also be hooked up to a hot water tank so that on warm days the heat can be extracted and used to warm household water. It explained really well at The Geothermal Heat Pump Consortium.
