In accordance with National Fire Protection Agency (NFPA) guidance, SimpliSafe® recommends replacing Smoke Detectors every ten years, and replacing Carbon Monoxide Detectors every five years.

How do I know when to replace my SimpliSafe® Smoke and/or Carbon Monoxide Detectors?

Your life safety devices need to be routinely cleaned, tested, and even replaced after certain intervals, in addition to battery replacement. 

SimpliSafe® CO Detectors (including Smoke/CO Combo detectors) need to be replaced within five (5) years of the manufacture date (found on the label on the back of your device); and Smoke Detectors need to be replaced within ten (10) years of the manufacture date (found on the label on the back of your device).