Jay's Comfort Team installed a geothermal system for me. I would recommend them, but not the system itself. I would never have another geothermal system installed. The heat sink is a swimming pool, and it requires a cooling tower and a lot of other stuff. It's just too many parts, all of which require tweaking and resetting, and it's just too much of a hassle. But Jay's has been very responsive to the difficulties I've been having with it. Their service is excellent, but I would not do a geothermal system again.