Another huge issue with the Mr.Heaters is the amount of moisture that they
generate. Use one for awhile and see how much more
condensation collects on your windows and the flocking on the underside of
your poptop. I still say that my propex even though
expensive was the best comfort item we have purchased so far. I did install
an Atwood furnace into a friends Vanagon
and it was less than half the price of a propex. Installation was more
complicated,draws more 12v power,but the btu's were double if not triple
what my propex is. Can't recall the exact numbers right now. I will say that
I tried a Mr. Heater before the
propex but like I mentioned above the moisture was overbearing and I would
not sleep with it lit. I have seen more than one "safety" sensor fail on
various products costing thousands more than the Mr.Heater. Just don't trust
it.

B

On Mon, May 3, 2010 at 11:59 AM, Geo <ahwahneevw@gmail.com> wrote:

> On 5/3/10, David Beierl <dbeierl@attglobal.net> wrote:
> > The current versions of Mr. Heater have an oxygen sensor that shuts
> > the device down before the mixture changes enough to generate
> > significant amounts of CO...
>
> I have heard that the safety feature can be fooled by the reduced O2
> encountered above 9000' or so.  Anyone had experience with this?
>
> Yes, I do often camp above 9K' and, of course, that is just when a
> heater is most welcome.
>
> Currently I use the simple Coleman catalytic with the battery operated
> fan but only when I am up & awake and (as noted) the Westy is leaky
> plus easy top venting thru the roof vent.
>
> Geo
>