How Often To Replace Home Smoke Detectors. The life expectancy of smoke alarms is generally 10 years, after which point their sensors can begin to lose sensitivity. We can tell you that we replace our smoke detectors every five to seven years.
The smoke will drift up toward the unit and should trigger the alarm. Smoke detectors need to be replaced every 10 years, and smoke detector batteries should be. Most landlords are eager to replace smoke detector units that aren't working properly, because the penalties for a lack of.
Fire administration, your smoke detector should be replaced entirely after 10 years (if you're unsure, you can look at the back of the alarm to see the manufacture date.
We can tell you that we replace our smoke detectors every five to seven years. Since you cannot (and should not) replace the lithium battery, replace the entire smoke alarm according to the manufacturer's instructions. The life expectancy of smoke alarms is generally 10 years, after which point their sensors can begin to lose sensitivity. How often should replace smoke detectors?