We’re glad you’re on top of this—ignoring issues with your carbon monoxide detector can be life-threatening. Five beeps on a carbon monoxide alarm mean end of life, telling you it’s time to install a new alarm.
Five beeps at fifteen-minute intervals is a warning that your alarm is dying. Unlike a low battery warning (one chirp), this means the entire alarm needs to be replaced.
You should deal with this issue as soon as possible. If your carbon monoxide detector dies, you’re putting your life at risk. Carbon monoxide is odorless, colorless, and tasteless, but can cause serious illness and death.