geothermal options

[buzzard]

I am building a new house and its time for heat/air system. With fuel prices im looking into geothermal. Trying to get an idea of what my options would be.


If it matters, the house is new construction, 2x6 walls, 2500 sq feet with a fair amount of windows. I had a well drilled on the property for water prior to geothermal consideration, maybe this can be used as open loop? It is only the well, no tank or pump yet. If this is doable what are the water quality considerations?
I have the acrage to install horizontal loop, but my soil is very sandy. I have building experience but no geothermal. I have a backhoe . I am in western pa and read copper dx system not recommended here cause we are too acidic. I dont understand this because copper is used for water lines in new homes?
What is likely my best option? I will call in an expert, I just wanna have some idea of the considerations before I blindly dive in. I am just starting to look into this so any advice at all appreciated.

[HayZee518]

while geo thermal seems a doable option, in the northeast because the frost level goes so far down it really wouldn't pay itself off. the loop has to be buried a long ways down - maybe ten feet from the surface. the closed loop is the only one I've seen. your makup heat be it electric or gas wouldn't justify what you take "out of the ground."