I believe that you’d need quite a hefty pump to apply enough pressure to lift a fluid up some several hundred feet!

Or is there something I’m missing?

I have a friend who had a geotherm system professionally installed with his new house, he loves it. I don’t know the details but he’s a financial counselor and he would not have done it unless there was a pretty good payback. If you’re building a house, consider that you’ll be making mortgage payments and utility payments, BUT the savings will continue after the system is paid for.

What you can do is run a much shallower well that you can use to draw the 50 degree year round temperatures, then use a more traditional heater (natural gas, propane, or electricty) set-up to bring the temperature of it up both during the summer and the winter.

Free!? I would have to live to be 100 to cover those costs, but if I win the lottery I’m gonna look into it!
oh why not use the heat to generate electricity too?

OK you can come over and install this next week, by the way try not to disturb the house when you are diggin the hole a 1000′ below it.

Don’t get me wrong at least you are trying.