I have been thinking about adding a Propex furnace to my van.
However, I do not at this time want to incur the additional expense of adding an external propane tank bolted onto the bottom of the vehicle.
I will have a sectional one piece removable storage box that is half of the removable bed base (think gaucho) that runs along the drivers side rear wall by the rear ac... (with the two back bench seats removed of course). I was thinking of taking one section of that storage box closest to the remaining bench seat and make that an airtight caulked and gasket on top sealed box with a vent hole into the floor to store the regular BBQ style propane tank for when parked and camping in it in winter. This way for the winter camping trips I can bring a Propane tank from the bbq and connect that to the existing copper tubing connection on the outside of the box that I have in the van that goes directly to the Propex Furnace... Then, when it is summer, i can remove the tank and use that box for storage.
When traveling I would keep the propane tank in the Aluminess box on the rear bumper to not have it in the vehicle when underway.
Let me know why this is a bad or maybe even a good or just plain dumb idea. I have not committed to anything yet... as my van is currently in Colorado at CCV getting a new top and I am just thinking about the next project as we all are...