If you are currently heating your home with electric resistance heat (such as electric baseboards), or you have a heating system that runs off of propane or fuel oil, you should consider installing an ground source heat pump (GSHP). GSHPs, also known as geothermal heat pumps, use electricity to move heat from a heat exchange loop buried underground or in water to inside your house providing heating in the winter. Because the technology moves heat rather than generating heat, and the ground remains a relatively constant temperature throughout the year, GSHPs are often two to four times more efficient than conventional electric heating systems and are also much cheaper to operate than fuel oil, propane, and some natural gas systems. They are also