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10 Best carbon monoxide detectors of 2026
Explore top picks
Best Choice1
9.6Exceptional
First Alert SMCO110LED-AC, Hardwire Combination Smoke & Carbon Monoxide Alarm with LED Strobe & 10-Year Battery Backup, 1-Pack
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Value for Money2
First Alert9.5Excellent
FIRST ALERT Plug-In Carbon Monoxide Detector, 3 Count (Pack of 1), CO600 , White, 6.75 x 6.9 x 9 inches
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product dimensions: 6.75 x 6.9 x 9 inches
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color: White
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pattern: Alarm
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item weight: 12.2 ounces
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batteries included: No
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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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product dimensions: 1.75D x 3.75W x 6.06H
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color: White
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pattern: Detector
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item weight: 1.05 pounds
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batteries included: Yes
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4
9.0Excellent
First Alert CO606, Plug-In Carbon Monoxide (CO) Detector, Hardwired Alarm with Battery Backup, 3-Pack
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product dimensions:‎1.38"D x 5"W x 3.4"H
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color:‎White
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pattern:‎Alarm
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item weight:‎8 ounces
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batteries included:‎Yes
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5
Kidde8.9Very Good
Kidde Carbon Monoxide + Explosive Gas, Natural Gas & Propane Alarm, Plug-in with 9V Battery Backup, Digital Display, 85 dB Alarm, LED Status Indicators, 3rd Edition
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Alarm Signal:85-decibel
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Battery Backup:9-volt
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Power Source:Plug-in 120V outlet
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Peak Level Memory:Records last CO detection or test
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LED Status Indicators:Included
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6
8.8Very Good
FIRST ALERT CO400-3 Carbon Monoxide Detector, Battery Operated, White , 3-Pack -CO400-3
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7
Kidde8.5Good
Kidde Carbon Monoxide Detector, Plug-in with AA Battery Backup, Easy-to-Read Digital Backlit Display, 85 dB Alarm, Rotating Plug, LED Status Light Indicators, 5th Edition, COPD
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8
8.3Good
Kidde Carbon Monoxide Detector, Plug-in Carbon Monoxide Detector with AA Battery Backup, 85 dB Alarm, Rotating Plug, LED Status Light Indicators, 5th Edition, COP
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9
TOPTES8.2Good
TOPTES CT-580 Portable Carbon Monoxide Detector, Rechargeable CO Detector with Vibration, Visual & Audible Alarms, 0-1000PPM, TFT Color Display for Home, Camping, Travel, Industrial & Professional Use
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product dimensions:N/A
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color:‎Orange
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pattern:N/A
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item weight:‎1.01 pounds
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batteries included:‎Yes
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10
8.1Good
Kidde Smoke and Carbon Monoxide Detector, 10-Year Battery Powered, LED Status Lights, 85 dB Alarm, 5-inches, 30CUD10, 1 Pack
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color: White
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batteries included: Yes
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item model number: 30CUD10
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best sellers rank: 434 in Tools & Home Improvement See Top 100 in Tools & Home Improvement 1 in Smoke & Carbon Monoxide Alarms
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included components: User Guide, Alarm, Mounting Hardware
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