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Is it better to mount a CO alarm lower to the ground at the outlet or higher up?

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I have 120 VAC plug in CO detectors. They are meant to plug in directly or I can pull the cord out and place the unit up to 6' away from the outlet. Is it OK to mount the detector directly into the outlet which is about 16" from the ground or is it better to pull the cord out, plug that into the outlet and mount the detector higher up?
asked in Carbon Monoxide Detectors by rsw656 (120 points)
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1 Answer

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Hi RSW656,
This is what the National Fire Protection Association (NFPA 720) says: 
The location of the Carbon Monoxide detector for its effective performance is not generally dependent on mounting height. The density of carbon monoxide is similar to that of air at room temperature, and carbon monoxide generally mixes readily with air. The manufacturer’s installation instruction should also be followed.
Since there are usually several factors having impact on the air movement inside your house you may want to install more than one CO detector. The plug-in type at the electrical outlet level (16”) and another unit up on the ceiling so in case of a spillage you have everything covered. They aren’t that expensive and all recommendations (including the manufacturers) are usually the minimum you should do. 
Having more Carbon Monoxide detectors in your home can only improve anyone’s chance for surviving an accidental spillage. If you didn’t have a chance to look at my Carbon Monoxide detector locations post and video, just follow this link - http://checkthishouse.com/4822/where-to-install-carbon-monoxide-alarm-co-detector-locations.html
answered by darekrudy (21,730 points)