Are you aware that the wood stove is illegal in some states in American. The act of heating your home seems so elementary because you rarely have any issues with it. Simply set your thermostat when it gets cold and go from there. What happens if the power goes out in February and is out for a month? How would you heat your home. This article is a great set of instructions on how to build a simple barrel stove.
This stove will require some skill to create but its something you can pull off and might be your best options in a collapse scenario. The barrel is going to give off tons of heat when you need it. There are also ways to create a double barreled stove that will help heat the home even better. Remember, there are solutions out there for off grid heat.