International Ground Source Heat Pump Association (IGSHPA)
http://www.igshpa.okstate.edu/
IGSHPA is the leading non-profit association in the geothermal industry, providing training and accreditation programs for geothermal system installers. Chesapeake Geosystems is a member of IGSHP.

Geothermal Heat Pump Consortium (GHPC)
http://www.geoexchange.org/
GHPC is working to increase the awareness and use of geothermal technology throughout the U.S. and the world. The GHPC is a valuable clearinghouse of information on the various federal and state incentive programs offered for using geothermal.

U.S. Department of Energy—Geothermal Technologies Program
http://www1.eere.energy.gov/geothermal/
The U.S. Department of Energy has endorsed geothermal technology and is working to educate the U.S. industry and the public about its many benefits.

Environmental Protection Agency (EPA)
http://www.epa.gov/cleanenergy/renew.htm#geothermal
The EPA has recognized geothermal as “the most energy-efficient, environmentally clean, and cost-effective space conditioning system available.” The agency recognizes geothermal as a renewable source of energy that produces negligible air emissions, because no fossil fuels (gas, propane, oil, etc.) are combusted in creating geothermal energy. Fossil fuel emissions are known contributors to global warming.