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Placement of Carbon Monoxide Detectors

Updated March 08, 2019

Protect your family from carbon monoxide poisoning by placing carbon monoxide detector units in optimal positions throughout your home. Known as the silent killer, carbon monoxide is odourless, tasteless and colourless, making it a sneaky and deadly poison. Whether your carbon monoxide alarms are hard-wired into a newly constructed home or battery-operated units added in later, placement is crucial for keeping your loved ones safe.

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  1. Place one carbon monoxide detector in each sleeping area or bedroom. Install a detector unit in the hallway outside the sleeping areas. Locate the detectors on walls or the ceiling farthest removed from heating vents.

  2. Ensure that there is at least one carbon monoxide detector on each floor of a multistory house, including the basement, even if there are no bedrooms on that floor.

  3. Locate carbon monoxide detectors high on the wall or on the ceiling. Place them in a location that will not be blocked by drapery, high furniture or other encumbrances.

  4. Tip

    Test the batteries in carbon monoxide alarms at least twice a year. To avoid repeated false alarms, do not place carbon monoxide detectors near fuel-burning appliances or in the kitchen.


    Install only carbon monoxide detectors that have been approved by Underwriters Laboratories (UL).

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About the Author

Denise Schoonhoven has worked in the fields of acoustics, biomedical products, electric cable heating and marketing communications. She studied at Newbold College and Middlesex Polytechnic in the UK, and Walla Walla University. A writer since 2008, Schoonhoven is a seasoned business traveler, solo tourist, gardener and home renovator.

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