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BroadHopper · 03-04-2014, 12:50 PM

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?

03-04-2014, 12:50 PM	#23
BroadHopper Senior Member Join Date: Oct 2004 Location: Laconia NH Posts: 5,667 Thanks: 3,282 Thanked 1,132 Times in 814 Posts	Combination smoke/CO detectors 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? __________________ Someday may never be an actual day.