How long do smoke alarms typically last?
The typical lifespan of most alarms is 8 to 10 years. Mand smoke alarms have a manufacturers warranty period of 10 years however in some cases issues relating to built in lithium batteries may not be covered by warranty. This is because the use and treatment of the alarms are outside the control of the manufacturer and they cannot prevent alarms being handled in such a way that depletes the in built battery faster than anticipated.