Heat Pump Water Heater vs. Marathon w/ Geothermal Heating/Cooling
We are building a new house and I am trying to decide wether to go with a HPWH or an electric Marathon. Our house will have two Trane T2GY units that will provide heated water to the water heaters (2, 80 gal.). We live in Northern Michigan and the units will be in the basement. I am wondering if anyone has an opinion on the pros and cons. I realize that the HPWH's draw heat from the basement which will be heated by in floor heat but is it significant? Will the dehumidifying effect of the HPWH save more energy than the "extra" heating we may have to do in the basement (by not using our dehumidifier as much)? And, I believe I read that the energy use of a HPWH is a third as much so the payback period may be faster vs. the Marathon? I realize I am probably splitting hairs but want to try to be as efficient as possible. Any opinions or experiences would be appreciated!