Umm, that is true of very…
Umm, that is true of very old heat pump technology. The newer refrigerants do allow a heat pump to MOVE (heat pumps don't make heat) heat in conditions down to -20c easily.
Umm, that is true of very old heat pump technology. The newer refrigerants do allow a heat pump to MOVE (heat pumps don't make heat) heat in conditions down to -20c easily.