How to keep propane from freezing

Also want to add, that any extra layers, suck as an area rug or even a heavy blanket on the floor will help you stay warmer. The floor get cold. We also have pillows that we stuff in the vents as they allow a lot of warmth to escape. For at night --- get one of the cheap foam mattress toppers ($20) from walmart. Because they don't have the gel cooling layer, they hold body heat and are great for helping you stay warm and toast in bed. I also added tension curtain rods up under the valances to hand insulating curtains ( Walmart has some) so with the day/night shades down and the curtains closed, helps with window drafts or cold radiating in. If you have slides, roll towels and push up against the floor by cabinets, under sofa at the edge - there is cold air that radiates thru that rubber seal. You can also fasten foam sheets on the top, bottom & sides of the slide when it's out to help insulate it more. Open curtains to let sun in when it does shine. Good luck. I would not even choose to stay in an RV over winter in a cold area. You will go thru a lot of propane, which isn't cheap.