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This is a great thread.
If I have it correct - the AC (cooling) function of the heat pump is not necessarily more efficient than a normal AC unit. The potential "gain" is to be able to provide heating, to a point, without using NG or propane. Does it cost more in electricity to provide heating compared to using e.g. NG? Why not have an AC unit and a NG heater?
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Sold: 1989 3.2 coupe, 112k miles
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