Well, emergency heat seems like a good thing to have --Especially in Minnesota
I agree, Teacher. We're not as far North, but emergency heat is the thorn in my side. It's the one part of our preps that I always feel is lacking. We've got lots of extra clothes and blankets, chemical hand/body warmers, hot water bottles, etc... but I just don't think I'm going to feel security until we have an off-the-grid whole room/house solution like a wood or pellet stove.
A big concern for us too in Minnesota. I help my brother cut, split, haul, and stack firewood for his outside furnace. It is really a lot of work! If you don't have a woodlot, that fuel is just as expensive and hard to get in an emergency as any other fuel, and your home insurance rates will go up if you have an indoor wood burning furnace..
For our house, we have city gas. Obviously, that could be interrupted at any time for a variety of reasons. For short term backup, we rely on portable electric heaters. If power goes down too, we have kerosene heaters and enough fuel for a few days. We also use propane catalytic heaters as backup. Not a lot of comfort, but placed in the basement, it keeps the pipes from freezing.
Long term plan is to install a couple of wall mounted propane space heaters with outside venting and a couple of 100 gal tanks at the ready.