Geothermal heat pumps are among the most efficient and comfortable heating and cooling technologies available. This technology has been keeping consumers comfortable for more than 50 years. There are three basic Geothermal Technologies - Direct Exchange (DX), Closed Water Loops & Open Water Loops.
Direct Exchange 'DX' - uses refrigerant circulated in copper tubing as the heat transfer medium.
Closed & Open Water Loops - use water/glycol/methanol circulated in buried plastic pipes to transfer heat from the ground.
All use the same physics principle, using the earth as a 'heat source" and 'heat removal".