Our rankings are generated through the algorithmic analysis of thousands of customer reviews about products, brands, merchant customer service levels, popularity trends, and more. We use advanced technology, including AI, to help process and organize this information at scale, supporting our analysis with greater speed and consistency. The rankings reflect our opinion and should be a good starting point for shopping.
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10 Best carbon monoxide detectors of 2026
Explore top picks
Best Choice1
First Alert9.7Exceptional
FIRST ALERT CO605 Plug-in Carbon Monoxide Detector with Battery Backup, White
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color:‎White
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pattern:‎Alarm
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batteries included:‎Yes
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item model number:‎CO605
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best sellers rank:#71 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #1 in Carbon Monoxide Detectors
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Value for Money2
Kidde9.5Excellent
Kidde Carbon Monoxide Detector, AA Battery Powered, Portable for Travel or Home, 85 dB Alarm, LED Status Indicators, 3rd Edition
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3
Kidde9.2Excellent
Kidde Carbon Monoxide Detector, Plug-In with 9V Battery Backup, Digital Display, 85 dB Alarm, LED Status Light Indicators, 3rd Edition
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color: White
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pattern: Detector
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batteries included: Yes
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item model number: KN-COPP-3
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best sellers rank: 2,848 in Tools & Home Improvement See Top 100 in Tools & Home Improvement 10 in Carbon Monoxide Detectors 12 in Smoke & Carbon Monoxide Alarms
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4
First Alert9.1Excellent
First Alert CO400 Carbon Monoxide (CO) Detector, Battery Operated Alarm, 2-Pack
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color: White
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pattern: Detector
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batteries included: Yes
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item model number: CO400
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best sellers rank: 481 in Tools & Home Improvement See Top 100 in Tools & Home Improvement 4 in Carbon Monoxide Detectors
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5
Kidde9.0Excellent
Kidde Carbon Monoxide Detector, AA Battery Powered CO Alarm with LEDs, Test-Reset Button, Low Battery Indicator, Portable
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color:‎Detector
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pattern:‎Detector
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batteries included:‎Yes
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item model number:‎KN-COPP-B-LPM
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best sellers rank:#619 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #4 in Carbon Monoxide Detectors
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6
Kidde8.9Very Good
Kidde Carbon Monoxide Detector, Plug-in & AA Battery Backup, COP
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7
First Alert8.6Very Good
First Alert Plug in Carbon Monoxide Alarm
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color:‎White
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pattern:‎Alarm
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batteries included:‎Yes
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item model number:‎CO605
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best sellers rank:#71 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #1 in Carbon Monoxide Detectors
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8
Kidde8.3Good
Kidde Carbon Monoxide Detector, Plug-in Carbon Monoxide Detector with AA Battery Backup, 85 dB Alarm, LED Status Light Indicators, 3rd Edition
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9
Kidde8.2Good
Kidde Carbon Monoxide Detector, AA Battery-Powered, COB
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10
First Alert8.1Good
First Alert CO400 Carbon Monoxide (CO) Detector, Battery Operated Alarm, 1-Pack
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color: White
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pattern: Detector
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batteries included: Yes
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item model number: CO400
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best sellers rank: 508 in Tools & Home Improvement See Top 100 in Tools & Home Improvement 4 in Carbon Monoxide Detectors
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