Re: [VAL] Carbon Monoxide Detectors?

["Marc Lizer" <marclizer@xxxxxxxxxxxxx>]

It actually does not matter if it is high or low.  

http://www.cmhc-schl.gc.ca/en/burema/gesein/abhose/abhose_ce25.cfm but the
data is repeated elsewhere with a quick google search for CO properties.
To save time, here's the pertinent copy:

"Where Do I Put A CO Detector?
Most manufacturers specify where you should locate their CO detector. In
general, the best place to put the detector is where you will hear it while
sleeping. CO is roughly the same weight as air and distributes evenly
throughout a room, so a detector can be placed at any height in any
location, as long as its alarm can be heard. Additional units could be
installed in several other locations around the home, such as a child's
bedroom; check the list below before installing.

To avoid both damage to the unit and to reduce false alarms, do not install
CO detectors:

*in unheated basements, attics or garages 
*in areas of high humidity 
*where they will be exposed to chemical solvents or cleaners, including
hair spray, deodorant sprays, etc. 
*near vents, flues or chimneys 
*within 2 metres (6 ft.) of heating and cooking appliances 
*near forced-or unforced-air ventilation openings 
*within 2 metres (6 ft.) of corners or areas where natural air circulation
is low 
*where they can be damaged, such as an outlet in a high traffic area 
*where directly exposed to the weather. "

So Methane rises.
LP pools and/or moves to the lowest point. Place detector at floor level,
but not hear a draft area.( like the door, or intake vent)
CO evenly disperses within air in a confined space. Place detector where
you will hear it, but not too near potential sources of CO, nor near vents
or drafts.

Sorry ,
Marc