I know that excavation and heavy machinery usage can get quite expensive. But if the loops are at the bottom of the pond, there isn't much excavation. That's where I'm confused. Seems that there's about the same amount of equipment, maybe a little more, as regular HVAC.
My plan is to use my pond as the heat exchange point. The pond is 28 ft. deep at the deepest spot. This is where I would like to place the loops. Later on, I plan on placing an aerator about 15-18 ft. deep. Hopefully, this won't interfere with the bottom layer of water and I won't have problems with the geo.
