I've never had any trouble with the Propex heater running at altitude up to
8K - 9K feet but I'm
know that Colorado altitudes are much higher in some places so I can't help
you there.

As far as placement goes I have mine under the bench seat on the passenger
side.   If I had
it to do again I'd place it like others have in the compartment next to the
water tank.   As you
have found, storage space is a premium in our campers.   I'm not yet
convinced placing it
outside is a good idea but I have no good data points of experience to
judge it by....

Steven
91 Westy

On Mon, Sep 29, 2014 at 6:06 AM, David Bjorkman <ddbjorkman@verizon.net>
wrote:

> Hi All;
>
> I am thinking of going the propex route.  I have 2 questions for those
> more propex knowledgeable than I.
> 1)  I have heard that the propex heaters have some problems with
> altitude.  Their performance, and mayhaps ability to operate, diminish with
> altitude.  Anyone up in the Rockies or another high point able to confirm
> or deny what I have heard?
> 2)  If I go with the installation, I am wondering about placement.  I
> already am unhappy with the loss of my overhead storage space to the A/C
> (which I enjoy, I'm so conflicted) and so do not want to lose anymore
> interior space to the propex.  I do not want to remove the rear hot water
> heat unit so am thinking about the under the floor installation.  Anyone
> have experience with this kind of placement and the rigors of snow, road
> salt, and other hazards that the heater will run into if placed under the
> vehicle and into the elements?
>
> Thanks;
> Dave B.
>  '87 Westy with FAS inline 4
>