Affirmative on propane and 12 volt for the furnace. This fall I started using an inexpensive space heater in my Aerolite. Really works well! I use the propane furnace to warm the trailer and then turn it off and rely on the space heater, especially during the day. Quieter, and keeps warm air circulating so the trailer feels warmer. Used to use one in my pop up years ago. Don't know why I quit doing that, but glad I rediscovered it.