"The field model of the GeoColumn is a factory sealed and tested, rigid HDPE containment vessel that is 24 inches in inside diameter, 28 inches in outside diameter and 20 feet in overall length. This vessel contains a copper tube refrigerant gas heat exchanger submerged in pure, unconditioned water; thus it is a hybrid direct exchange system but with unique properties. "
GeoEnergy Enterprises
A few of those in my backyard would work fine. Since my ground water is very near the surface.
"One column is required per ton of conditioning in most soil conditions therefore an average home requiring 3 tons of heating and cooling capacity would require only 3 GeoColumns to be installed to allow access to geothermal efficiency and advantages."
Dang, I would need 4 columns, since I've got 4 tons of Sanyo running..
I guess maybe I'll stick to stealing the heat out of the air..
