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10 Best gas carbon monoxide detectors of 2025

Save up to 40% off
  • Best Choice

    1

    2 Packs Combination Gas & Carbon Monoxide Detector, 4-in-1 Natural Gas Detector & Carbon Monoxide Alarm with Temperature(°F) & Humidity,Propane & CO Detector for Home,RV,Apartment
    KOABBIT

    2 Packs Combination Gas & Carbon Monoxide Detector, 4-in-1 Natural Gas Detector & Carbon Monoxide Alarm with Temperature(°F) & Humidity,Propane & CO Detector for Home,RV,Apartment

    10% Off
    9.7
    Exceptional
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  • Value for Money

    2

    Kidde Carbon Monoxide Detector, Propane, Natural, Methane, & Explosive Gas Alarm, Plug-In Wall with 9-Volt Battery Backup, Digital LED Display
    Kidde

    Kidde Carbon Monoxide Detector, Propane, Natural, Methane, & Explosive Gas Alarm, Plug-In Wall with 9-Volt Battery Backup, Digital LED Display

    20% Off
    9.4
    Excellent
    Our Rating

  • 3

    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

    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)

    26% Off
    9.3
    Excellent

  • 4

    FIRST ALERT Combination Explosive Gas and Carbon Monoxide Alarm with Backlit Digital Display, GCO1CN
    First Alert

    FIRST ALERT Combination Explosive Gas and Carbon Monoxide Alarm with Backlit Digital Display, GCO1CN

    • color:Gray/White
    • power source:Corded Electric
    • alarm:85 dB
    • sensor:Electrochemical CO sensor
    • dimensions:7.25 x 4.25 x 9.06 inches
    9.1
    Excellent
    Our Rating

  • 5

    Carbon Monoxide Detectors,Plug in CO and Natural Gas Detector, Combination Gas & Carbon Monoxide Detectors for Travel with Temperature Humidity Display, 4 in 1 CO & Gas Detector for Home/Travel
    Nsrrye

    Carbon Monoxide Detectors,Plug in CO and Natural Gas Detector, Combination Gas & Carbon Monoxide Detectors for Travel with Temperature Humidity Display, 4 in 1 CO & Gas Detector for Home/Travel

    32% Off
    8.8
    Very Good
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  • 6

    5-in-1 Carbon Monoxide Detectors, Natural Gas Leak Detector, Plug-in & Battery Backup Co Detector, HD Digital Display, CO Gas Temp Humidity Sensor, 1-Pcs, Black
    Vilfet

    5-in-1 Carbon Monoxide Detectors, Natural Gas Leak Detector, Plug-in & Battery Backup Co Detector, HD Digital Display, CO Gas Temp Humidity Sensor, 1-Pcs, Black

    40% Off
    8.6
    Very Good

  • 7

    5-in-1 Gas Leak Detector & Carbon Monoxide Detectors Plug in, Portable Carbon Monoxide Detector with Brightness & Volume Adjustment, Temperature & Humidity, Battery Backup for Home/RV/Travel/Camping
    NICGOL

    5-in-1 Gas Leak Detector & Carbon Monoxide Detectors Plug in, Portable Carbon Monoxide Detector with Brightness & Volume Adjustment, Temperature & Humidity, Battery Backup for Home/RV/Travel/Camping

    20% Off
    8.5
    Good

  • 8

    4-in-1 Natural Gas Leak Detector & Carbon Monoxide Detectors - Carbon Monoxide Detectors Plug in - Natural, Propane, Co & Gas Detector, Temperature & Humidity Detectors for Home, RV (White)
    NORJAN

    4-in-1 Natural Gas Leak Detector & Carbon Monoxide Detectors - Carbon Monoxide Detectors Plug in - Natural, Propane, Co & Gas Detector, Temperature & Humidity Detectors for Home, RV (White)

    21% Off
    • color:White
    • power source:AC
    • alarm:Audible and Visual
    • sensor:Catalytic
    • dimensions:4.7D x 1.93W x 2.05H
    8.4
    Good

  • 9

    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

    14% Off
    8.2
    Good
    Our Rating

  • 10

    4-in-1 Gas and Carbon Monoxide Detectors, Detectors Plug in, Temperature and Humidity Monitoring, Audible Light Effect Alarm, Gas Monitor Sensor Suitable for Kitchen, RV, Apartment (1, Black)
    Yigeliter

    4-in-1 Gas and Carbon Monoxide Detectors, Detectors Plug in, Temperature and Humidity Monitoring, Audible Light Effect Alarm, Gas Monitor Sensor Suitable for Kitchen, RV, Apartment (1, Black)

    8.1
    Good