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Science proves otherwise…in cold enough temps the heat pump is literally useless and you will need a backup source like electric dor gas/bio fuel.
Sitting up here in the Alps, winter approaching, laughing at your two-decades-out-of-date ignorance 😂
it’s just physics, and at sub-zero temperatures the air heat pump simply switches to electricity it’s another matter if your pump uses the ground or a well, then of course it will work at any outside temperature
I Should have been more specific about air source…but yes
Think most people know this is the case. We use heat on pumps. It’s not particularly cold but -1.
