If I do replace my furnace with a heatpump maybe I can swing auxiliary heat with a small wood stove or pellet stove. Based on the last decade I think a few weeks of brutal cold (ie heat pump fails) and snow are the new norm. Looking just at the last 50 years most of the extreme colds have been in the last 10.
@peregrine I think pellete stove requires power tho? Maybe wood stove is more resilient.
@neauoire man can be run manually or via battery/solar backup. They don’t require much electricity just to turn a hopper. Wood stove is more work but an option.
Noting my house is roughly 1k sq fr. So its really not out of the question.