How often should you replace smoke detectors?

Every 10 years.

How to do it

Check the date printed on the back of each alarm. Replace any that are 10 years old, and CO alarms at the age their label gives, usually 7 to 10 years.

Why it matters

Smoke sensors lose sensitivity with age, even when the test button still works.

Recommended interval: every 10 years, per U.S. Fire Administration.

General guidance for a typical home; the manufacturer's instructions come first.

Get reminded when it is due

Paper works until it goes on the fridge and stays there. The Househand app keeps the same checklist and tells you when each job comes due, based on when you last did it.

  • A reminder when a job is due, not on a fixed date
  • A history of what you did and when
  • The same schedule as this site, optional tasks and all

The app is not in the stores yet. Until it is, track your house in the browser: same schedule, same rules.

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