What Is Causing My Fire Alarm Sensor to Beep?

Malfunctions

• Depending on the model of smoke detector you choose, a constant beeping or chirping sound may signal a low battery. Changing the battery and resetting the alarm per the manufacturer’s directions should rectify the problem and stop the continual beeping or chirping. Even new units can signal a low battery if shipped with dead batteries. Hardwired alarms that beep or chirp should be inspected for improper wiring. These alarms may also need to be reset after a power failure.

Other Reasons

• Cooking accidents are perhaps the most common reason for a smoke alarm to signal a false alarm or begin beeping when a fire doesn’t exist. Biscuits burning in the oven, a pan of vegetables scorching on the stovetop and even steam rising from boiling pots can set off smoke detectors. Anything that can get inside the smoke detector has the ability to interfere with the proper functioning of the alarm. This includes dust, debris and insects.

Maintenance

• A properly installed and maintained smoke detector can be a proverbial lifesaver and prevent some of the common causes of alarm beeping and chirping. Vacuuming and dusting off your smoke detector on a regular basis can help prevent false alarms resulting from dust build-up or insects. Fire safety experts recommend testing your alarm on a monthly basis and replacing batteries annually to ensure the alarm functions properly.

Tips

• The U.S. Fire Administration recommends hiring a qualified electrician to install your hardwired smoke alarms. Install smoke detectors on each floor of your home and make sure smoke detectors are placed sufficiently close enough to sleeping areas so family members can hear them if they're sleeping. The instruction manual that comes with each smoke detector will spell out the difference between a beeping or chirping to signal malfunction and a patterned alarm to indicate detection of smoke and possible fire. Take all alarms seriously and evacuate the house before calling 911.