Everyone should own a backup portable propane heater with a 20 lb tank of propane in case the electricity goes out. Propane heaters don’t need electricity to work. Be certain that the propane heater can be hooked up to a tank, and don’t forget the hose and regulator. You need that to hook up the heater to the tank. You can buy the entire propane setup for about $200. This heating rig will warm a small room to a comfortable 65 degrees.
This is a good backup if you're a democrat or rino.
That's because it can kill you as the heater uses up the oxygen and asphyxiates you.
You can get away with this by leaving a window open AND having a good Co2 sensor/alarm.
I have several propane heaters, but would NEVER use one in the house.