I am doing some research on geothermal A/C [preferable DX]units and quickly reached a dead end for information. It seems like nobody is willing to part with info on how much such a unit would cost me or any basic information. I know they are very efficient (250% to 350%) and wanted to explore the feasability of installing one for myself. Any ideas on how or where to get additional info out there?
( What companies I found on the net, didn't return calls or were very cryptic with information).