Ask the Chief: How often should I replace my carbon monoxide alarm?
Q: How often should I replace my carbon monoxide alarm?
A: Carbon monoxide (CO) is a colorless, odorless gas which, depending on the concentration and length of exposure, can be deadly. CO can come from a variety of sources, including gas-fired appliances, grills, wood-burning furnaces or fireplaces, cars or any gas-powered engine.
Under state law, all homes must be equipped with at least one CO alarm located within 10 feet of each bedroom.
CO alarms do have a shelf life and it is important that they are checked regularly and, if needed, replaced. On average, CO alarms should be replaced every five (5) years. CO alarms may have an actual life span that is shorter, due to environmental conditions and may need to be replaced sooner. It is best to check with the manufacturer of your specific alarm for recommended replacement dates.
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