Originally Posted by
Vern Heiler
CO is slightly heavier than air, so the lower location is actually better.
Not trying to nit pick your post here Vern.
CO2 is heavier than air and will fall to the ground.
CO is slightly lighter than air and will rise and move with natural air currents.
A plug in location for a CO alarm is the worst location possible in a home.
They should be placed at eye level on each floor of a home, preferably in the bedrooms.
Keep in mind that a UL 2034 rating on a CO alarm makes it pretty much useless to begin with.