I've posted this before, but apparently it bears
repeating:
There are three kinds of propane
heat.
1. Portable that has a flame. This produces
carbondioxide and carbon monoxide. It should never be used in an enclosed
space without a lot of open vent area and never when sleeping. These will
easily produce carbonmonxide poisoning, which puts you in hospital or
worse.
2. Portable or built in and is catalytic.
These are supposed to be unable to produce carbon monoxide. They do use up
oxygen. You have to leave windows open. General recommendation is
not to use when asleep. I would never sleep with one on. Infact, I
removed the one in my LQ and gave it away.
3. Outside air, propane furnace. These are
the ones that LQ manufacturers put in. They do require some 12v to
run. The fire is actually outside the LQ. When heat is called for,
the blower turns on. A safety switch checks that it is actually pulling
air through the fire box. When it has run for a certain time, so that if
propane has leaked into the fire box and could cause an explosion has been
removed, a spark ignites the propane. More safety switches shut it off if
no fire, or the outlet is plugged.
There used to be ones that used no electricity,
but they could not blow any fumes from the fire box. They are no longer on
the market. Too bad.
By using comforters, sleeping bags, or a
combination of both it is possible to sleep at any temperature. You just
have to get the right stuff. Arctic and antarctic expeditions have slept
during the coldest nights on our planet without heat. If you want really
good sleeping bags, consider www.wiggys.com. We have some we have used
for MT winter tent camping.
Ed
Ed & Wendy Hauser 2994 Mittower
Road Victor, MT 59875
