You should replace smoke detectors every 10 years, or sooner if they are not working properly. Check the back of the unit for the manufacture date; add 10 years to this date to find the replacement year. It is also recommended to replace any combination smoke and carbon monoxide (CO) detectors every 7 years. 

Yes, if you need help changing the batteries in your smoke detectors, call (208) 922-1144 to make a request.