[elhigh]

Originally Posted by Christ

I'm using a similar concept in place of A/C in my home - I'm going to run gravity-fed artesian water through a car radiator, with a fan and shroud behind it, blowing the cool air created by the water flow through the HVAC system of the house. That, combined with sufficient insulation, a living roof, and foam insulated floors, should be enough to cool the entire house without much issue.

I've got an uncle with an earth-sheltered house and I am going to share some of his hard-earned wisdom with you:

Be damned positive about your waterproofing. If you think reroofing is a pain, try having to excavate your roof before you can even start the roofing work.