I'm coming to this discussion a little late. Sorry. My wife and I did a lot of research on geothermal heat pumps when we purchased our house. We looked at all of the options and decided to go with the open system. We pull water out of the same well that we get water for the house from, and dump the water into our 2 acre pond. It took us 2 years to save up for the change over, but in the 8 years that we have run the system, we have more than paid for the cost of the system in electric bill savings. We have had nothing but good experiences with the system.

Last edited by Nebucks; 08/15/12 11:31 PM.