90%
Odds it works through 2029Last checked: October 14, 2026.
First Alert is one of the best-known smoke and carbon monoxide alarm brands, owned by Resideo. In 2025 it took over from Google’s Nest Protect as the recommended smart alarm.
CompanyFirst Alert, part of Resideo
Smart alarmsOnelink alarms that work with Apple Home and the Onelink app
Needs the cloud?No for alarms. Alarms sound on their own, and the app adds phone alerts
Subscription for basics?No
How long devices get supportSmoke alarms are replaced about every 10 years anyway. We have not found a First Alert alarm that was switched off.
Why 90%
- Starting point90%A large, established company.
- Track record0No history of shutting down its connected products.
- Works without the cloud0Alarms sound on their own, with the app as an extra.
- Our estimate90%
The good news: A smoke alarm’s main job, sounding loudly, never needs the internet. First Alert’s owner Resideo is a large company that also runs Honeywell Home.
The bad news: Phone alerts depend on the Onelink app and cloud.
If you own First Alert
- Test your alarms every month, app or not.
- Replace alarms by the date printed on them, usually after 10 years.