Forum Discussion
Dutch_12078
Feb 18, 2019Explorer III
Bobbo wrote:
1. CO (not CO2) is heavier than air so vents near the roof won't help. You need vents at floor level.
Myth
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. Different manufacturers recommend different mounting locations, and you should always follow the manufacturers’ recommendation.
CO has a molar mass of 28.0, and air has an average molar mass of 28.8. The difference is so slight that CO is found to evenly distribute itself indoors. It is worth mentioning that CO indoors is usually generated from incomplete combustion (heat source) and therefore traveling in a warm air stream. Warm air is more buoyant and does rise. Coupling this fact with the knowledge that CO is lighter than air…
Carbon Monoxide Facts and Myths
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