Does Geothermal with slab on grade construction make sense?
We are in Minnesota (Zone 6a). Building new this summer on 12 acres. 2000-2400 sq/ft single level (maybe a bonus above garage), slab on grade, with radiant floor heat. Shooting for a 13-15kw grid tied PV. We are looking at Geothermal and have a good site for it, but I’m not sure it makes sense in our situation. I’m hoping not to run duct work just for AC (since we will have radiant), but I think I would have to ducts with Geo to get the benefits of AC. Would putting the money into more insulation, or solar make more sense in this case?