Originally Posted by Davidjeff
Time for a new one. Look on unit, somewhere it may tell you when to replace or at least when it was made. Most smoke, CO, and Lp detectors are only good for around 5-7 years. Use a voltmeter and make sure your batteries are really as good as they should be. My bet is your detector has aged out.
Most smoke detectors have a life span of 10 years.....
If a smoke alarm is chirping intermittently, one of the following may be the reason:
The battery may be loose or installed improperly
The smoke alarm sensing chamber may be dirty
Humidity, steam, or other environmental factors
An electrical condition may be causing power to the unit to be interrupted
The alarm may have reached its end of life