How Long Do Smoke and Carbon Monoxide Detectors Last?

While the importance of them is widely known, smoke and carbon monoxide detectors often become afterthoughts once they're installed.

It may be time to replace your carbon monoxide alarm

First Alert 10-year Battery Smoke and Carbon Monoxide Alarm, 2

First Alert Carbon Monoxide and Smoke Detector Combo Pack of the CO400 Battery Operated Carbon Monoxide Alarm and the SA303 Battery Operated Smoke

First Alert Carbon Monoxide and Smoke Detector (Combo Pack) - SCO403 (1039879)

The First Alert Hardwire Combination Smoke/Carbon Monoxide Alarm with Battery Backup wires directly into your homes electrical system and the battery

First Alert Hardwired Combination Smoke/Carbon Monoxide Alarm with Battery Backup - SC9120B

The First Alert Hardwire Combination Smoke/Carbon Monoxide Alarm with Battery Backup wires directly into your homes electrical system and the battery

First Alert Hardwired Combination Smoke/Carbon Monoxide Alarm with Battery Backup - SC9120B

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Worry-Free Smoke and Carbon Monoxide Alarm, Lithium Battery

First Alert Smoke and Carbon Monoxide Alarm, 3-pack

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First Alert SCO5CN Combination Smoke and Carbon Monoxide Detector