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 combination gas carbon monoxide detectors of 2026
Save up to 17% off
Best Choice1
X-Sense9.8Exceptional
X-Sense Smoke Detector Carbon Monoxide Alarm Combo, XP0H-SN, 1-Pack
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Value for Money2
Kidde9.7Exceptional
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 dB
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Power Source:120V outlet, 9V battery backup
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LED Status Indicators:Included
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Peak Level Memory:Records last detection or test
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Display:Digital LED
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3
Kidde9.4Excellent
Kidde Carbon Monoxide Detector, Propane, Natural, Methane, & Explosive Gas Alarm, Plug-in Wall with 9-Volt Battery Backup, Digital LED Display
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First Alert9.3Excellent
First Alert Plug in Combination Explosive Gas & Carbon Monoxide Alarm
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product dimensions: 7.25 x 4.25 x 9.06 inches
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color: Gray/White
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batteries: 2 AA batteries required. included
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item weight: 11.7 ounces
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batteries included: Yes
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5
Kidde9.2Excellent
Kidde Carbon Monoxide & Explosive Gas Alarm, Plug-in & AA Battery, COPDLG
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6
Kidde9.1Excellent
Kidde Carbon Monoxide Detector, Plug-in & AA Battery Backup, COPD
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7
Kidde9.0Excellent
Kidde Carbon Monoxide Detector, Plug-in & AA Battery Backup, COP
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8
First Alert8.9Very Good
First Alert Battery Combination Smoke & Carbon Monoxide Alarm
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color:‎White
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pattern:‎SMICO100
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batteries included:‎Yes
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item model number:‎SMICO100
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best sellers rank:#2,496 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #12 in Smoke & Carbon Monoxide Alarms
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9
Kidde8.8Very Good
Kidde Carbon Monoxide Detector, AA Battery-Powered, COB
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10
Kidde8.5Good
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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batteries: 2 AAA batteries required. included
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item weight: 1.05 pounds
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batteries included: Yes
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