Earth as Heat Source and Sink
Geothermal systems use ground-source heat pumps to heat and cool your home or building, and to provide hot water. These systems are energy efficient because they use as a source the earth's constant temperature (about 52 degrees F). In winter, the earth's natural warmth is brought into your home, and in summer the system works in reverse to bring in natural cool.The article mentions that a forced air system will run about $40-45K USD. With an average energy savings of 25 to 40 percent it would take me YEARs and YEARS to actually save money.
|technorati tags: geothermal, energy, alternative energy|