What is what to do when smoke alarm chirps?

A chirping smoke alarm usually indicates a low battery. Here's what to do:

  • Identify the Alarm: Determine which smoke alarm is chirping, especially if you have multiple alarms.

  • Replace the Battery: This is the most common solution. Use the correct type of battery specified by the manufacturer (usually 9-volt).

  • Test the Alarm: After replacing the battery, press the test button on the alarm to ensure it's working properly. You should hear a loud beep.

  • Clean the Alarm: Dust and debris can sometimes cause false alarms or chirping. Gently vacuum the alarm's exterior.

  • Consider the Alarm's Age: Smoke alarms have a limited lifespan (usually 10 years). If your alarm is old, replace it, even if it seems to be working after a battery change. More information about replacing your device can be found here.

  • Hardwired Alarms: If you have hardwired alarms (powered by your home's electricity) with a battery backup, the chirping could indicate a low or failing backup battery, or a problem with the hardwired connection. Consult an electrician if replacing the battery doesn't solve the issue. More information on consulting an electrician can be found here.

  • Silence Button: Some alarms have a "silence" or "hush" button. Pressing this may temporarily stop the chirping, but it doesn't fix the underlying problem. It only silences the alarm for a short time (usually several minutes) and then it may chirp again if the problem persists. More information about what to do if the chirp does not stop can be found here.