We are building a new home in Virginia. We are using a reputable builder that works in the nicest communities, but that does not have a lot of geo experience. We told the builder we were interested in a Water Furnace system for the home. The home will be two levels on a basement. Total above grade square footage is about 5,200, roughly 3,000 on the first and 2,000 on the second. The basement is another 3,000, but will be finished later. The builder was only able to find one vendor for the job. The vendor quoted two 4Ton GeoStar Aston units, one for the basement and first floor and the second for the upper floor. Each would have their own IntelliZone thermostat. The field will be a closed horizontal loop. The system comes with a 10-year parts and labor warranty. The new build comes standard with a 14 Seer Trane propane furnace on the main and a heat pump for the second floor. After receiving a credit for not using this system, the quote for the GeoStar system adds an additional $105,000 (+/- $10,000 depending on ground conditions) to the cost. Perhaps I had unrealistic expectations, but I didn't even know what to say. I suspect the return on that investment would be decades. Is this really what geothermal costs?