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10 Best co2 detectors of 2025

Save up to 41% off
  • Best Choice

    1

    Combination Gas & Carbon Monoxide Detectors Plug in, 2-in-1 Natural Gas Detector & Carbon Monoxide Alarm, CO Detector Alarm & Propane, Methane, Explosive Gas Detector for Home,RV,Easy to Install
    Hembisen

    Combination Gas & Carbon Monoxide Detectors Plug in, 2-in-1 Natural Gas Detector & Carbon Monoxide Alarm, CO Detector Alarm & Propane, Methane, Explosive Gas Detector for Home,RV,Easy to Install

    11% Off
    9.7
    Exceptional
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    Careful review Our team ensures quality, value, and fit based on real user feedback
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  • Value for Money

    2

    First Alert CO605 Plug-In Carbon Monoxide Detector with Battery Backup , White
    FIRST ALERT

    First Alert CO605 Plug-In Carbon Monoxide Detector with Battery Backup , White

    41% Off
    9.6
    Exceptional
    Our Rating

  • 3

    Kidde Carbon Monoxide Detector, Battery Powered CO Alarm with LEDs, Test-Reset Button, Low Battery Indicator, Portable
    Kidde

    Kidde Carbon Monoxide Detector, Battery Powered CO Alarm with LEDs, Test-Reset Button, Low Battery Indicator, Portable

    33% Off
    9.4
    Excellent
    Our Rating

  • 4

    Kidde Carbon Monoxide Detector, Plug In Wall with AA Battery Backup, Test-Hush Button
    Kidde

    Kidde Carbon Monoxide Detector, Plug In Wall with AA Battery Backup, Test-Hush Button

    34% Off
    9.2
    Excellent
    Our Rating

  • 5

    X-Sense Carbon Monoxide Detector Alarm with Digital LCD Display, Replaceable Battery CO Alarm Detector with Peak Value Memory, XC01-R
    X-Sense

    X-Sense Carbon Monoxide Detector Alarm with Digital LCD Display, Replaceable Battery CO Alarm Detector with Peak Value Memory, XC01-R

    34% Off
    9.1
    Excellent
    Our Rating
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  • 6

    Carbon Monoxide Detectors, CO Detector Battery Powered, Carbon Monoxide Alarm with Sensitive CO Sensor, LCD Display and Sound Warning for Home, Bedroom, Kitchen
    SHYEEH

    Carbon Monoxide Detectors, CO Detector Battery Powered, Carbon Monoxide Alarm with Sensitive CO Sensor, LCD Display and Sound Warning for Home, Bedroom, Kitchen

    8.8
    Very Good

  • 7

    First Alert CO400 Carbon Monoxide (CO) Detector, Battery Operated Alarm, 1-Pack
    FIRST ALERT

    First Alert CO400 Carbon Monoxide (CO) Detector, Battery Operated Alarm, 1-Pack

    8.7
    Very Good
    Our Rating

  • 8

    3 Pack Carbon Monoxide detectors,co Detector,Carbon Monoxide Alarm,co2 Detector Battery Powered with LCD Display,Carbon Monoxide Detector,UL2034 Standards,for Home
    pumwry

    3 Pack Carbon Monoxide detectors,co Detector,Carbon Monoxide Alarm,co2 Detector Battery Powered with LCD Display,Carbon Monoxide Detector,UL2034 Standards,for Home

    8.6
    Very Good
    Our Rating

  • 9

    Carbon Monoxide Detector Alarm with Digital LCD Display, CO Detector Alarm with Replaceable Battery,Test-Reset Button, Low Battery Indicator, Portable,complies with UL2034(Batteries NOT Included)
    USBNOVEL

    Carbon Monoxide Detector Alarm with Digital LCD Display, CO Detector Alarm with Replaceable Battery,Test-Reset Button, Low Battery Indicator, Portable,complies with UL2034(Batteries NOT Included)

    8.3
    Good
    Our Rating

  • 10

    2 Pack Carbon Monoxide Detectors,CO Detectors Battery Powered,Carbon Monoxide CO Alarms with Light&Digital Display for Home,Bedroom,Kitchen,Office
    USBNOVEL

    2 Pack Carbon Monoxide Detectors,CO Detectors Battery Powered,Carbon Monoxide CO Alarms with Light&Digital Display for Home,Bedroom,Kitchen,Office

    8.2
    Good