Since propane is heavier than air (1.5 to 1 for air) if you're looking to
detect just unburned propane, low is best for mounting a gas detector.Carbon
monoxide and air are about the same weight so CO tends to disperse in that
atmosphere, except ... when the environment is heated the CO tends to rise
which is why volks often put that kind of detector higher, like on the
closet cabinet.

bob

 Soooo, the questions
> is where should mount this thing? It's on the cabinet wall below the rear
> bench a few inches from the rear heater.  I thought this was a good place
> for it. Should I move it to the back or is the location it's in OK?
>
> It turns out the leak, which I did not investigate further than finding it
> today, was on the outside in the extend-a-stay.
>
> Thanks,
> Bryan
>