Magister, 1 year ago

Better than this, I’m in QC (basically same climate as ME) and my heatpump is rated -20C/-4F and yes it works in winter to heat the house. Sometimes the heat pump goes in a “anti frost mode”, it’s automatic. I set it to 73F in winter and depending of the room it’s between 70 and 73, even if it’s -4F outside.

In QC, ME, VT, etc it can go down to -22F in winter, not uncommon. I have electric baseboard set to 70F so in case the heatpump stops, the baseboards take the relay.