[Red Badger]

Now, if you're talking about home use, geothermal is the way to go! Constant ground temperatures; run it one way and heat the house, run it the other way and cool the house. Very nice.

You actually have a system?.......

[whd23]

You actually have a [geothermal] system?.......

My parents built a energy efficient home in 1985. Part of the design included a geothermal "heat-pump." Since the well provides plenty of water their system is configured as an "open-loop" design. However, I have seen systems that skip the coolant-to-water heat transfer and circulate the coolant itself in copper ground loops.