Don't use an industrial heater inside a camper or tent. You can die.
I remember fondly using a Coleman heater when we would go on our yearly winter camping trip with my father and siblings. Having now gone "winter" camping without a heater with my own kids (I put "winter" in quotes because I'm in San Diego, where there's really no such season, with the exception of the mountains), I recall the heater even more fondly.
But use the right one. And be careful.
