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Reply to "Dual fuel (heat pump with auxiliary gas furnace) - what settings for maximum efficiency and/or cost savings?"
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[quote=Anonymous]Heat pump switchover can be much lower than you’d think. In Canada they use heat pumps at very low temps. That said, if you set it too low you may actually be using more energy as the heat pump struggles to recover indoor temp. 20-25 degrees is certainly an easy default for most systems.[/quote]
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