Top Industry / Government
IGSHPA
International Ground Source Heat Pump Association – The main accreditation organization of geothermal heat pumps.
US Dept. of Energy
Geothermal Technologies Program within the US Department of Energy.
Energy Star – Geothermal Heat Pumps
The Geothermal Heat Pump section of Energy Star, which rates products based on energy efficiency. Only heat pumps that are Energy Star certified are eligible for the 30% federal tax credit.
Industry Associations
Geothermal Help
Geothermal Help – Industry website providing consumer education, articles, featured projects, forums, etc.
GeoExchange
Geothermal Heat Pump Consortium
CoGEHPA
Colorado Geo Energy Heat Pump Association
MGEA
Michigan Geothermal Energy Association
Other Related Sites
Renewable Heating 101.com
Free basic information about renewable energy technologies such as geothermal, radiant heat, solar panels, solar thermal, hybrid system design etc.
DSIRE
Online renewable energy tax incentive list for all federal, state and utility companies.