Is carbon monoxide lighter than air?

Of course, any time you have gas appliances or a wood-burning fireplace, you should have at least one carbon monoxide (CO) detector in the home. CO is odorless, tasteless and does DOES NOT GIVE WARNING that it is being produced or building up. read more

Carbon monoxide is heavier than air, so CO detectors should not be placed on the ceiling or high on the wall. Fact. CO is slightly lighter than air. However, studies have shown no significant difference in measurements based on what height CO detectors are mounted. read more

Carbon monoxide (CO) is slightly lighter than air, so carbon monoxide alarms are effective when placed on the ceiling or high up on a wall. You should install Nest Protect according to the guidelines in the User’s Guide that came with it. read more

Carbon monoxide has a density that is about 97% that of air under normal room temperature. So, to answer the question, no, it is lighter than air. You would think, then, that it would rise. read more