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10 Best carbon monoxide detector cos of 2026

Save up to 20% off
  • Best Choice

    1

    DS-100 Portable Carbon Monoxide Detector for Travel, 140H Standby, CO Detector with Magnetic Back, 3-in-1 CO Monitor with Audible & Visual Alarm for Camping, Hotel, Car & RV
    Clicked 407 times in the last month
    GasDoc

    DS-100 Portable Carbon Monoxide Detector for Travel, 140H Standby, CO Detector with Magnetic Back, 3-in-1 CO Monitor with Audible & Visual Alarm for Camping, Hotel, Car & RV

    9.8
    Exceptional
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  • Value for Money

    2

    NICGOL 4 in 1 Upgraded Natural Gas Leak Detector and Carbon Monoxide Detectors, Dual Sensor Gas Leak Detector & Carbon Monoxide Detectors Plug in (Temperature & Humidity) for Home, RV (Black)
    NICGOL

    NICGOL 4 in 1 Upgraded Natural Gas Leak Detector and Carbon Monoxide Detectors, Dual Sensor Gas Leak Detector & Carbon Monoxide Detectors Plug in (Temperature & Humidity) for Home, RV (Black)

    20% Off
    9.7
    Exceptional

  • 3

    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

    • power source:Battery Powered
    • alarm:85dB to 215-430ft
    • sensor:Electrochemical sensor
    • battery:3 AA batteries required
    • dimensions:4.25 x 4.21 x 1.93 inches
    9.4
    Excellent

  • 4

    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

    9.2
    Excellent

  • 5

    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

    9.1
    Excellent
    Our Rating
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  • 6

    Kidde Carbon Monoxide Detector, Plug In Wall with 9-Volt Battery Backup, Digital LED Display
    Kidde

    Kidde Carbon Monoxide Detector, Plug In Wall with 9-Volt Battery Backup, Digital LED Display

    15% Off
    • power source:Plug In
    • alarm:Audible
    • sensor:Ionization
    • battery:2 AAA batteries included
    • dimensions:1.75D x 3.75W x 6.06H
    8.8
    Very Good
    Our Rating

  • 7

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

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

    10% Off
    8.7
    Very Good
    Our Rating

  • 8

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

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

    8.6
    Very Good
    Our Rating

  • 9

    FIRST ALERT Carbon Monoxide Detector, No Outlet Required, Battery Operated, CO400, White, 2 Count (Pack of 1)
    First Alert

    FIRST ALERT Carbon Monoxide Detector, No Outlet Required, Battery Operated, CO400, White, 2 Count (Pack of 1)

    8.4
    Good
    Our Rating

  • 10

    2 Packs Carbon Monoxide Detectors,CO Alarm Detector Monitor Battery Operated with PPM Value Display,Carbon Monoxide Alarm with Sound &Light Warning,Accurate & Easy to Read,for Home Kitchen Office
    Sylzy

    2 Packs Carbon Monoxide Detectors,CO Alarm Detector Monitor Battery Operated with PPM Value Display,Carbon Monoxide Alarm with Sound &Light Warning,Accurate & Easy to Read,for Home Kitchen Office

    • power source:Battery Powered
    • alarm:Audible
    • sensor:Electrochemical
    • battery:3 x 1.5V AAA
    • dimensions:4.7 x 2.7 x 0.98 inches
    8.2
    Good