Quote:
Originally Posted by photon
Has anyone ever done AC in a house with 2 furnaces? I think I've been told that we can put one on the upstairs furnace and it'll keep the main floor cool too since cold air sinks and of course can turn on the fans etc.
Does that work? Or is it just a case of too much area and one won't be enough? (2800 square foot or so)
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I have two furnaces and AC units on both. I occasionally use the main floor one on the really hot days, otherwise just use the upstairs one. I could easily get by with just the upstairs one. Basement actually gets too cold with the AC on