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Why do I need to replace my smoke/heat alarm every 10 years? / How often should I replace my alarm? 

General

11 September 2024

Smoke and heat alarms should be replaced every 10 years because their sensors degrade over time. After a decade, the sensitivity of the alarm may be compromised, reducing its ability to detect smoke or heat effectively. You should always check the alarm for the ‘replace by’ date if your are unsure.

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