Here are some informative and interesting geothermal videos to explain Geothermal / Geoexchange (TM) Energy
Geoexchange (TM) Heating and Cooling Systems (compliments of www.geoexchange.org)
Geothermal Heating
Geothermal House Design
Geothermal Heating Solutions
Solar Geothermal Hybrid Home
Geothermal Energy at a Residential Location
WaterFurnace Geothermal – A Convenient Truth
Geo Thermal Heat Pumps – Theory and Operation From Sibley