People talking about heat pumps to cool the water got me thinking about heat pumps, and then about geothermal sources, and then about the possibilty of using a ground loop much like a GT heat pump would use to either lose, or gain heat. The kind I'm thinking of would be a well-type that would hold a U tube segment of the filtration system. No heat pump, just circulate the water into the ground where it's always 50-55 degrees. The technology's already proven. It would just need to be adapted to run pool water thru instead of coolant which would be trivial and well drillers are a dime a dozen.

We're just now rejoicing that the water temp has finally hit 80 so this isn't anything I need, just thinking out loud.

C.