🛡️ Safety

How often should you change smoke detector batteries?

Q: What is the typical schedule for “replace detector batteries”?

Once a year. And replace the whole detector every 10 years.

Replace smoke detector batteries at least once a year, and test the alarm every month; units with sealed 10-year batteries are replaced as a whole when they expire.

Why it matters

A smoke alarm with a dead battery gives no warning at all. The low-battery chirp tends to start at night, which is why many people pull the battery and forget to put it back.

How to do it

Pick a date you will remember, such as the clock change or your birthday, and swap every battery that day.
Press the test button after fitting the new battery and make sure the alarm sounds.
Vacuum the vents gently, since dust can trigger false alarms or dull the sensor.
Check the manufacture date on the back: the whole detector should be replaced after about 10 years.
Never remove a battery to stop a false alarm. Fan the smoke away or press the hush button instead.

In your HouseKiper schedule

Replace detector batteries: once a year. And replace the whole detector every 10 years. Get a reminder when it is due.

Related tasks

Test smoke and CO detectors
Every 6 months
Check or recharge the fire extinguisher
Once a year
Check gas connections and hoses
Once a year
Test the RCD / circuit breaker
Every 3 months

See it in a checklist

This job is part of the complete home maintenance checklist and of the fall checklist, first-time homeowner checklist, spring checklist and the apartment checklist.