A UL-Listed Carbon Monoxide Alarm May Not Protect You

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Why you probably need a low-level CO monitor

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[](http://www.greenbuildingadvisor.com/blogs/dept/building-science/ul-listed-carbon-monoxide-alarm-may-not-protect-you)

_Don't judge a book by its cover? That certainly applies to what may be the best protection against carbon monoxide poisoning you can buy. The two best carbon monoxide monitors, the [CO Experts](http://www.coexperts.com) monitor and the [NSI 3000](http://www.stopcarbonmonoxide.com/) from the [National Comfort Institute](http://www.nationalcomfortinstitute.com/index.cfm), don't have the approval from Underwriters Laboratories (UL) that so many manufacturers crave. There's a good reason for that.

URL: http://www.greenbuildingadvisor.com/blogs/dept/building-science/ul-listed-carbon-monoxide-alarm-may-not-protect-you