Thanks, Greg.  That's encouraging as I seldom use the Westy in
temperatures colder than -30� Fahrenheit.

Sometimes, when it's that cold, my 2000 Beetle just won't start and we
have to use the Westy as it always goes "on demand".

Mike

Greg Potts wrote:
> Hi Mike,
>
> I can verify that a propane furnace will not operate at temps below -40.
> (Fahrenheit and Celsius meet at -40, which is also the freezing point of
> Mercury). The propane will condense into liquid and will not flow out of
> the tank. I experienced this first-hand during a winter Boy Scout camp
> 30 years ago, when the furnace in the bunkhouse failed overnight due to
> extreme cold. Imagine the resulting pandemonium when there were about 40
> kids crammed into the Ranger's house the next morning for a warm-up
> after breakfast!!
>
> Above the boiling point of propane you should have no problems with the
> furnace.
>
> Note: If there is butane or other gases mixed into your propane they
> will have different boiling points. Butane boils at 31F, for instance.
> But AFAIK butane is not mixed into propane in Canada or the US.
>
>
> Happy Trails,
>
> Greg Potts
> 1973/74/77/79 Westfakia "Bob The Tomato
> www.pottsfamily.ca
> www.busesofthecorn.com
>
>
> On 30-Jan-08, at 8:15 PM, Mike Collum wrote:
>
>> How low can the outside temperature go (outside westy propane tank) and
>> a propex furnace, at or near sea level, still operate?
>>
>> Mike
>
>
>
>
>