Carbon monoxide is a silent killer that many fall victim to each year. Protect your family when you install a carbon monoxide detector that quickly alerts you to dangerous levels of carbon monoxide in your home.Consider whether you prefer a hardwired or battery-operated unit, the benefits of having a combination detection service, whether you need a portable or tamper-resistant device, and other features, such as remote notifications.
Best Overall: Kidde 900-0076-01 KN-COPP-3
The plug-in Kidde 900-0076-01 KN-COPP-3 carbon monoxide detector also has a battery backup and normal operation is shown by the blinking red dot in the LED display. The Test/Reset button allows you to conduct random tests to check its operation or to reset the device.Reviewers firmly believe this is a life-saving device, having been woken with the sound of the alarm and reading the digital display. A major plus is being able to unplug the device and watch for changes in the digital readout.
Best Value: Kidde KN-COB-B-LP2
The Kidde KN-COB-B-LP2 sounds an alarm at 85 dB when carbon monoxide is detected. The monitoring continues uninterrupted due to the battery operation and a signal alerts you when the batteries get low and need replacing. Users commented that the unit is easy to install and has a loud alarm, which is exactly what’s needed. The compact size has been appreciated and reviewers have said it is a simple design but effective alarm that has clearly detected carbon monoxide leaks.
Best for Long Battery Life: First Alert CO710 Carbon Monoxide Detector
Even in a power outage, you can rely on the First Alert CO710 carbon monoxide detector to alert you to a carbon monoxide leak. A loud alarm sounds and you can view the details in the easy-to-read display. Reviewers liked the fact this can be placed on a shelf or mounted on a wall. It also helped with hospital visits after carbon monoxide leaks as it displayed the level of carbon monoxide. The 10-year battery life was a huge plus compared with other models that continuously needed replacement batteries.
Best Hardwired Detector: First Alert BRK CO5120BN Hardwire Carbon Monoxide Alarm
Have peace of mind that the electrochemical sensor in the First Alert BRK CO5120BN carbon monoxide detector can accurately detect carbon monoxide leaks and alert you with a loud alarm. False alarms are minimized thanks to the unit’s microprocessor.Reviewers complimented the ease of installation of this device but, most of all, appreciated that this model replaced old units without having to change existing fittings.
Best Battery-Operated Detector: First Alert CO400 Carbon Monoxide Detector
The First Alert CO400 carbon monoxide detector has an accurate electrochemical sensor and 85 dB alarm to loudly alert you of any carbon monoxide leaks. Reviewers loved the fact they knew this still warned of leaks in the event of a power outage. Another huge plus is that no installation is required. Both visual and audio signals are given when you need to replace the battery.
Best Combination Smoke/Carbon Monoxide Detector: First Alert BRK SC9120B
Be protected from two hazards with the First Alert BRK SC9120B combination smoke and carbon monoxide detector. Be alerted by an 85 dB alarm and indicator lights on the device in the event that either of the issues are detected. Reviewers appreciated that this device doesn’t give false alarms when cooking, even during an entire day of cooking for Thanksgiving. The battery backup in case of a power outage was also appreciated, giving users peace of mind.
Best Combination Carbon Monoxide/Explosive Gas Detector: Kidde AC Plug-In Carbon Monoxide and Explosive Gas Detector Alarm
Be alerted to both gas and carbon monoxide leaks when you install a Kidde AC plug-in carbon monoxide and explosive gas detector alarm. Choose from three ways to mount the unit, whether on a tabletop, plugged into an outlet, or mounted on a wall. Reviewers commented on the easy installation and incredible sound emitted by the alarm. The 9V battery backup gives peace of mind in the event of a power outage.
Best Alexa-Enabled Detector: Onelink Safe & Sound
Get notification of an issue straight to your phone with the Onelink Safe & Sound smoke and carbon monoxide detector. Enjoy three features in one small device: a smoke and carbon monoxide detector, a premium home speaker and use with Alexa. Reviewers loved the multi-room aspect of this unit, benefitting from enhanced audio entertainment throughout the home. The nightlight was also appreciated and the fact the detector can be connected to other hardwired detectors.
Best Tamper-Resistant Detector: Kidde KNCOB-DP2 Tamper-Resistant Plug-In Carbon Monoxide Detector Alarm
The AC plug-in Kidde KNCOB-DP2 tamper-resistant plug-in carbon monoxide detector alarm has battery backup in the event of a power outage. The front display lights signal correct operation or an alert. The unit can be easily tested or reset by pressing the button. Reviewers were happy with the simple, easy to install design and long battery life. The loud sound alert and battery backup were also appreciated.
Best for Commercial/Industrial Use: Sensorcon Inspector Carbon Monoxide Detector
The professional-grade Sensorcon Inspector carbon monoxide detector detects levels of carbon monoxide that are as low as 1 ppm and reach up to 1,999 ppm. Benefit from audio and visual alerts between 35 and 200 ppm.Reviewers appreciated the small design that can be attached to objects using the clip. Positive recommendations of the device sounding alerts were given by those in the firefighting service and plumbing industry.