Hello all, this is my first post, so bear with me. We are finally building our dream home (they started digging yesterday), and I was all set to go geothermal but now am unsure. The up front costs are quite a bit, so I had opted to go with the open loop. Now I am thinking Air to Air Heat Pump, but I have been researching a little and it sounds like they are not real efficient up here in Northern Minnesota when it gets cold.
I know some don't like the open system, but the terrain is actually ideal for it I think. Reason for not going closed loop is the property is totally covered with oaks, and I am removing as few as possible.
I also have a very large ditch (over a mile long) on the back of the property that holds water year around, so I could dump the water into that. The ground is very sandy/gravel as well.
Any thoughts on these topics is greatly appreciated.