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10 Best co carbon monoxide detectors of 2026

Save up to 30% off
  • Best Choice

    1

    Carbon Monoxide Detectors and Natural Gas Detector, 4-in-1 Upgraded Carbon Monoxide Detectors Plug in, Gas Leak Detector with Dual Alarms, Temperature & Humidity Sensor for Home, RV, Black, 2 Packs
    Clicked 394 times in the last month
    Vilfet

    Carbon Monoxide Detectors and Natural Gas Detector, 4-in-1 Upgraded Carbon Monoxide Detectors Plug in, Gas Leak Detector with Dual Alarms, Temperature & Humidity Sensor for Home, RV, Black, 2 Packs

    30% Off Limited Time Deal
    9.8
    Exceptional
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  • Value for Money

    2

    2 Packs Combination Natural-Gas and Carbon-Monoxide-Detector,Koabbit 4-in-1 CO/LPG/LNG Explosive Gas Detector Alarm with Temperature(°F) & Humidity for Home,RV,Hotel,Apartment
    KOABBIT

    2 Packs Combination Natural-Gas and Carbon-Monoxide-Detector,Koabbit 4-in-1 CO/LPG/LNG Explosive Gas Detector Alarm with Temperature(°F) & Humidity for Home,RV,Hotel,Apartment

    20% Off Limited Time Deal
    9.7
    Exceptional

  • 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

    9.5
    Excellent

  • 4

    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
    9.4
    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

    9.3
    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

    • 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
    9.0
    Excellent

  • 7

    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

    8.8
    Very Good

  • 8

    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

  • 9

    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
    8.4
    Good
    Our Rating

  • 10

    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
    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

    8.3
    Good