Links
Trade Organizations
- Geothermal Heat Pump Consortium
- Air Conditioning & Refrigeration Institute
- The Copper Development Association
- Consortium for Energy Efficiency
- ADSC: The International Association of Foundation Drilling
Government Agencies
- Energy Star®
- U.S. Dept. of Energy, Geothermal Energy Topics
- Environmental Protection Agency, search for "geothermal heat pumps"