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BackPage Primer from Environmental Building News
September 1, 2007
Ground-Source Heat Pumps:
Tapping the Earth's Mass
Ground-source heat pumps (GSHPs), often called “geothermal heat pumps,” exploit the relatively stable temperatures found just 5 feet (1.5 m) or more below the surface, either depositing or extracting low-intensity heat. Heat pumps—whether ground-source or air-source—are basically air conditioners that can be run in reverse to provide heating as well as cooling.
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