If you think about it, and that's a huge simplification, the weight of the elements is like this: C<N<O. Now, our air consists primarily of N2 and O2. CO consists of one of the lighter atoms and one of the heavier atoms. The average weight is around the level of N2, but lighter than O2. Meaning, it's generally lighter that our air, but only to a small extent.
So in general, CO detectors can be near the ceiling, but they don't have to be. Someone once told me to hang them in the height of the average breather in the house. But definitively not near ground level.
Elk-Tamer t1_itbaoim wrote
Reply to comment by hicow in Pilot light playing hard to get by dingustotalicus
If you think about it, and that's a huge simplification, the weight of the elements is like this: C<N<O. Now, our air consists primarily of N2 and O2. CO consists of one of the lighter atoms and one of the heavier atoms. The average weight is around the level of N2, but lighter than O2. Meaning, it's generally lighter that our air, but only to a small extent.
So in general, CO detectors can be near the ceiling, but they don't have to be. Someone once told me to hang them in the height of the average breather in the house. But definitively not near ground level.