Carbon Monoxide Detector Replacement FAQs

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To determine if your carbon monoxide non-digital alarm has reached its end of life, refer to the following:

When the CO alarm emits a quick beep every 30 seconds and the red LED flashes, the unit has reached the end of its 7 or 10 year life.
Replacing the batteries will not stop the chirp if the unit is at the end of its useful life.

When an alarm has reached the end of its life, it needs to be replaced to continue protecting your home.

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Carbon Monoxide Alarms from Kidde

The leading cause of accidental poisoning deaths in North America, Carbon Monoxide (CO) is odorless, tasteless and invisible – it's a silent killer. The only safe way to know if carbon monoxide is present is to install carbon monoxide detectors (alarms) on every level of your home and in sleeping areas. Kidde has been making CO alarms with electrochemical sensing technology for years.

Smoke + Carbon Monoxide Alarm with Indoor Air Quality Monitor

Smoke + Carbon Monoxide Alarm with smart features

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Kidde Sealed Lithium Battery Power Carbon Monoxide Alarm with Digital Display

The Kidde App

Compatible with Google Home and Alexa. Use voice commands to
check alarm status and connection.

Google Home is a registered trademark of Google LLC. Amazon, Alexa and all related logos are registered trademarks of Amazon Technologies, Inc.