Massachusetts Department of Fire Services
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We support the Massachusetts fire service and help all our communities stay safe from fire.
Yes! We recommend switching out the alkaline backup batteries in hardwired smoke alarms twice a year to be on the safe side. The alarm itself should be replaced after 10 years because the sensors degrade over time.
November 4, 2025 at 12:01 PM
Yes! We recommend switching out the alkaline backup batteries in hardwired smoke alarms twice a year to be on the safe side. The alarm itself should be replaced after 10 years because the sensors degrade over time.