Can heat pumps continue to run while supplemental heat provides the remaining heat?
I had been under the impression that as it gets colder outside and the heat pump loses efficiency that you can incrementally start adding supplemental electric resistance heat to make up the difference.
Is this not the case?
I talked with a (Bryant) contractor who said that they can’t do this, that it’s it shuts the heat pump off completely at a certain point and just run a furnace.
But this doesn’t make sense to me since electric resistance is perfectly variable.
What am I missing here?
Note that I would prefer to move to all-electric over the coming decade.
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