Here are some informative and interesting geothermal videos to explain Geothermal / Geoexchange (TM) Energy

Geothermal Heating

How does A Heat Pump Work

Geothermal Energy

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