Larry Sue wrote:
It's just above 0 F and my heat pump is working almost non-stop. Is
it more economical to turn electric heat strips and leave the outside
unit off? I'd appreciate any advice.

Thanks.

It will decide for you. When it can not provide enough total heat the
resistance heat will kick in. I would assume, which is always a bad thing to
do, any well designed system would shut down the heat pump part when the
temperature was so low as to be come less than 100% efficient. Sorry I
really don't know if they do or not. If not, they need better engineers.

--
Joseph Meehan

26 + 6 = 1 It's Irish Math