Does anyone have any experience with propane furnace's in the attic in the northeast? I have heard mixed thoughts regarding this issue. I have heard that the furnaces can cause ice damming on the roof and the condensate line could freeze.
There used to be a furnace in the basement but they got rid of it and put electric heat at some point. There are some of the old ducks from the '50s but not all the ducks are still in place because when they installed the electric heat they removed a few of the ducks in the living room and kitchen.
I got a quote for three mini split units and they wanted 15k which seemed pretty high. I would think that it would cost me about the same if they put in a propane furnace with some new ducting in the basement.
Where I live it can get to at least -5 degrees in the winter. I would think it would not be cost effective to heat your house with heat pumps at that temperature.