When CO detectors started being required we were chasing alarms all day and night. The first detectors were over sensitive and home owners were calling us out often. As the years have gone on we have much less frequent calls for CO alarms. The ones we do get are sometimes legitimate alarms (our gas monitors confirm the presence of CO and other gasses), but mostly malfunction or battery issues. They are definitely life savers and worth the cost.
Tasteless, odorless, colorless....
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