Hi Everyone, I have begun a new home project and decided that I want Hydronic radiant heat in all floors. This would be a 865 sqft basement, 860 sqft Main floor and 347 sqft Upper floor. I'm located in Montana and the only contractor I could locate here specified in his proposal a WF NSW060 water-to-water system with 4 vertical bores for the closed loop. I wasn't told the depth of each bore. Although I sent him my build plans and specified direction the house faces and type of insulation which would be used throughout, I was not exposed to his Manual J calculations. I told him at the time that I would like the unit to also provide cooling but that is one of the problems. He says that the most cost effective solution to cooling would be to install a ductless Mitsubishi A/C system with one outdoor unit and several indoor units. The contractor didn't say he couldn't do cooling with the Geo system, only that it would require a lot of extra work and cost. As it is, the system with heating only is priced at above $40k but includes all well/ground loop work and hot water assist. Does this make sense? It is more cost effective to just have a separate Air A/C system?? Thanks for any advice.