ABSTRACT
A ground-source heat pump (GSHP) is an extremely effective device for reducing the carbon emissions from a building’s heating system in most circumstances. In a GSHP, underground pipes are used to harvest the sun’s warmth, which has been captured and stored in the earth, and move it into a building. Where the conditions are suitable GSHPs can capture enough solar energy to provide all of the water-and space-heating requirements of a small or large house, and in some projects they can do the same for massive offices and retail stores.
