Smoke Alarm Maintenance
Test smoke alarms monthly
Test your smoke alarms every month by using the test button on the alarm. When the test button is pressed, the alarm should sound. If it fails to sound, make sure that the battery is installed correctly or install a new battery. If the alarm still fails to sound, replace the smoke alarm with a new one.
Change the batteries every year
Install a new battery at least once a year, or as recommended by the manufacturer. Install a new battery if the low-battery warning sounds or if the alarm fails to sound when tested.
Vacuum alarms annually
Dust can clog your smoke alarms. Battery-powered smoke alarms should be cleaned by opening the cover of the alarm and gently vacuuming the inside with a soft bristle brush. For electrically-connected smoke alarms, first shut off the power to the unit, and then gently vacuum the outside vents of the alarm only. Turn the power back on and test the alarm.
Replace older smoke alarms
All smoke alarms wear out. If your alarms are more than 10 years old, replace them with new ones.