Replacing Your Smoke Alarms
Replace all smoke alarms when they are 10 years old. To determine the age of your smoke alarm, look at the back where you will find the date of manufacture. Smoke alarms should be replaced 10 years from the date of manufacture.
Hard-wired interconnected smoke alarms can be replaced most of the time without hiring a licensed contractor. Most larger hardware stores carry major brands. If your brand is not available, most hardware stores carry a “replacement” kit for most hard-wired smoke alarms. All you need to do is unplug one of your existing smoke alarms and bring it with you and get either the same brand (be sure the plug is the same) or you can buy an adapter kit that will allow you to use your existing plug with your new adapter and your new smoke alarm. Your local fire department will be happy to evaluate your smoke alarm needs.
Immediately replace any smoke alarm that does not respond properly when tested. Replace combination smoke-carbon monoxide alarms according to the manufacturer’s recommendations.
Should you need assistance or have questions about your smoke detectors, please contact your local fire marshal.