Just had our retirement house built in Westerly. Wanted to keep expenses low for the long term. We had a Hydron Module 3 ton installed by an actual Geo guru that has been installing and maintaining geo for 30 years, Rick King. He designed everything from the single 450' deep single hole loop to the ductwork and de-super heater. Got a Lochinvar hybrid water heater too. It was cranked up a few weeks ago and works beautifully. We should be moving in in a week or two and we visit the sight every other day. Mr. King installed a Honeywell Prestige 3 thermostat for the unit and I added the internet gateway that operates the geo remotely and keeps tabs on everything. We tried to make the house as tight as possible with external metallic faced foam board on the outside and a insulated foundation. Our house is about 2000 sq ft total including the partially finished basement. Had several energy wasting devices installed too. A sauna and a heated driveway(hill), comfort and safety. Also a 20KW Generac for backup power. Going geo was not an easy decision, but it is feeling better every day. I can tell the quality of heat is much better than a furnace already. Whenever I check the house on the android the temp is always spot on and the humidity is consistently 50%, so that seems like it will be super livable. I will try to keep updating this as time goes on.