[font=Helvetica, Arial, sans-serif]There are a lot of choices when choosing a method to heat your van. This article from the Consumer Product Safety Commission is informative. It appears that wood and coal heating results in the fewest annual deaths from carbon monoxide (CO) poisoning, and that propane/natural gas results in the most. Of course far more people depend on gas heating than wood or coal, but it does tell a story, and I think the story is that people using wood/coal/solid fuel heat have to give more of their attention to the heater or stove, and that solid fuel heaters are much simpler devices with less to go wrong. Propane devices on the other hand, are mostly set and forget with much more to go wrong, and if something goes wrong it might be harder to detect. Whatever you use, you should maintain a CO detector in your van.[/font]
[font=Helvetica, Arial, sans-serif]https://www.cpsc.gov/s3fs-public/pdfs/CO03.pdf[/font][/SIZE]
[font=Helvetica, Arial, sans-serif]https://www.cpsc.gov/s3fs-public/pdfs/CO03.pdf[/font][/SIZE]