Yes, a heat pump is usually far more efficient, up to a point. Once the outdoor temp drops below around 30F, resistance heat will still likely be necessary to completely warm the cabin. You can minimize that of course by using the heated seats and steering wheel (if you have that) and keep the cabin temp setting lower than normal. Some people (like myself) can't remain comfortable at lower temps, however, so there's still going to be a current draw for resistance heat. My fingers start turning blue, then white, even when it's as warm as 60F outside, so I'll be using the heat plenty in wintertime. Of course, Seattle doesn't get as cold as Boston.
2019 Kia Niro PHEV EX Premium
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