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nw MN | An electric off-peak plenum heater could be added pretty easily to what you have. We have that as a second stage to our air source heat pump. I would also look at an ECM blower motor retrofit for your airhandler. The rebate from the power company would probably pay 25% and it will be much quieter and more efficient. It would probably still run almost constantly but it would slow down when demand is lower, and startup is practically silent. | |
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Geothermal furnace supplemental heat?
