Reply #9: Sounds like they may have put in a horizontal system rather than a vertical

[Dover]

one which would require drilling. I'll look into papercrete. So far, as far as building materials go, I like the characteristics of Faswall.

I'd love to hear from someone who has a geothermal system built into a pond. That sounds interesting and could serve multiple uses (the pond as water source).

I'd also be curious if a water supply well for the house could share the same hole with a geothermal unit by just making it a little wider, rather than digging separate holes for each?

It sure sounds like geothermal doesn't take too long to pay for itself.