Geothermal
U.S. Department of Energy’s Geothermal Technologies Program
This DOE site provides a compendium of useful information about geothermal technologies.
The Geothermal Energy Association
The Geothermal Energy Association provides a number of publications along with their All About Geothermal” guide to geothermal technologies.
Geothermal Heat Pump Consortium
Comprehensive site with contractor lists, technical and financing information.
Information for the Prospective Geothermal Heat Pump Owner
This site is a good resource for anyone interested in owning a Geothermal Heat Pump System. This site introduces the technology, addresses many questions and provides a list of consultants.
Heat Pumps: A Heating and Cooling Introduction
This site introduces Heat Pump technology, its energy benefits and also provides purchasing tips. The site was created by Flex Your Power, an energy efficient campaign sponsored by the state of California.
GeoExchange Systems
This is a more in depth tutorial to heat pumps and concentrates on Geothermal pumps. This site introduces the technology, provides diagrams and discusses the efficiency benefits of a Geothermalsystem.
Selecting and Installing a Geothermal Heat Pump System
This site is a good resource for consumers interested in purchasing a Geothermal Heat Pump. The site covers Heat Pump rating systems, economics, and site evaluation. It also briefly discusses instillation.