02 Jan '13, 12pm

A UL-Listed Carbon Monoxide Alarm May Not Protect You

A 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 monitor and the NSI 3000 from the National Comfort Institute , don't have the approval from Underwriters Laboratories (UL) that so many manufacturers crave. There's a good reason for that. The CO Experts and NSI 3000 monitors are low-level monitors that tell you what's going on with the carbon monoxide levels in your home in real time. They cannot get listed by UL because UL has decided that only high levels matter, apparently to reduce the risk of ‘nuisance’ alarms. Here's a quote from UL standard 2034, as given on the CO Experts website: Carbon monoxide alarms covered by this standard are not intended to alarm when exposed to long term, low level carbon monoxide exposures or slightl...

Full article: http://www.greenbuildingadvisor.com/blogs/dept/building-s...

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