[NDizzle]

Heat pumps list that temperature in the documentation of the unit.

I think most of the midwest figured this out during the recent cold snap. It turns out the cut off for my heat pump is 10F.

I'm in the process of finalizing the installation of a wood stove insert to provide backup heating during the cold months. Switching to all electric feels a little like burning cash to me.

If you're in the US, there is an incredible 26% tax credit available on stoves (wood and pellet) that are more than 75% efficient. This covers both the cost of the unit AND installation. It's good for about the next 2 years and went into effect in early Jan.

https://www.hpba.org/Advocacy/Biomass-Stove-Tax-Credit