At minimum, smoke alarms should be replaced after 10 years. If your home has older smoke or smoke/CO alarms, they may pose a danger to your family.
Most alarms have a manufacturing date or end-of-life date on the backside (the side towards the ceiling). If your alarm does not have a manufacturing or expiration date, it is more than 10 years old and from a time period when the dates weren’t required on alarms.
Do not use Roost Smart Batteries in these older alarms. Please see more information in our Help Center article: What is the Roost Smart Battery warranty?
Here is some additional information on when to replace smoke alarms:
The NFPA recommends to replace all smoke alarms when they are 10 years old.
The US Fire Administration recommends that if your smoke alarm was installed more than 10 years ago it needs to be replaced.
All major smoke alarm manufacturers give similar recommendations. Please check with your alarm manufacturer to verify the suggested replacement time frame, as some manufacturers recommend a replacement sooner than 10 years.