Posted 12/29/2008 19:30 (#550359 - in reply to #550280) Subject: Re: HUH?
I'm pretty sure the system is transfering heat from the ground to the house or vise-versa, Isn't that the concept of a heat pump? It doesn't create heat or cooling, just moves it. The heat that is created by compression is also taken back on expansion.
geothermal heat?
