Where should a carbon monoxide detector be located in my home?
Proper placement of a CO detector is important. In general, the human body is most vulnerable to the effects of CO during sleeping hours, so a detector should be located in or as near as possible to the sleeping area of the home. If only one detector is being installed, it should be located near the sleeping area, where it can wake you if you are asleep. Where sleeping areas are located in separate parts of the home, a detector should be provided for each area. Additional CO detectors should be placed on each level of a residence and in other rooms where combustion devices are located (such as in a room that contains a solid fuel-fired appliance, gas clothes dryer or natural gas furnace), or adjacent to potential sources of CO (such as in a teenager’s room or granny suite located adjacent to an attached garage). Unlike smoke, which rises to the ceiling, CO mixes with air. Recognizing this, a CO detector should be located at knee-height (which is about the same as prone sleeping height)
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