[jmen24]

Originally Posted by BroadHopper

When you get a smoke detector, instruction tells you to mount on or near the ceiling. When you get a CO detector, instruction tells you to mount at the lowest floor near the floor.

I looked at a combination smoke/CO detector and notice the instruction tells me the unit should be installed near the ceiling. OK how does the CO portion works if CO is heavier than air?

I think combination detectors are a marketing gimmick and serves no real protection. Anyone wants to comment?

Face palm