Smart smoke detectors are quite a bit more expensive than their “dumb” counterparts, so it’s only natural for people to consider their lifespan and replacement costs. Here’s what you need to know about the lifespan of smoke alarms.
The title of this article “Do Smart Smoke Alarms Expire?” is a bit of a trick question. All smoke alarms “expire” in that they become less accurate over time and need to be replaced.
The materials in the smoke alarm sensor degrade, particulate matter accumulates over time on the sensors, and slow corrosion of the contacts and electrical components inside the alarm can lead to false alarms (or no alarm at all).