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10 Best combo gas and carbon monoxide detectors of 2025

Save up to 51% off
  • Best Choice

    1

    Kidde Carbon Monoxide Detector, Propane, Natural, Methane, & Explosive Gas Alarm, Plug-In Wall with 9-Volt Battery Backup, Digital LED Display
    Clicked 451 times in the last month
    Kidde

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

    9.6
    Exceptional
    Our Rating
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  • Value for Money

    2

    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
    9.4
    Excellent
    Our Rating

  • 3

    IQYEF 5-in-1 Carbon Monoxide Detectors,Natural Gas Leak Detector & Smoke and Carbon Monoxide detectors Plug-in, Battery Backup, HD Digital Display for CO, Smoke, Gas, Temp, Humidity - Home & RV Use
    IQYEF

    IQYEF 5-in-1 Carbon Monoxide Detectors,Natural Gas Leak Detector & Smoke and Carbon Monoxide detectors Plug-in, Battery Backup, HD Digital Display for CO, Smoke, Gas, Temp, Humidity - Home & RV Use

    51% Off
    9.3
    Excellent

  • 4

    CHENGHEM Natural Gas and Carbon Monoxide Detector, Plug-in Combo Carbon Monoxide and Gas Detector, 2 in 1 CO Detector and Combustible Gas Detector, Propane, Gas Leak Detector for Kitchen/Home（1Pack）
    CHENGHEM

    CHENGHEM Natural Gas and Carbon Monoxide Detector, Plug-in Combo Carbon Monoxide and Gas Detector, 2 in 1 CO Detector and Combustible Gas Detector, Propane, Gas Leak Detector for Kitchen/Home（1Pack）

    17% Off
    9.2
    Excellent

  • 5

    X-Sense 10-Year Battery Combination Smoke Carbon Monoxide Alarm Detector with Large LCD Display (Standalone Model)
    X-Sense

    X-Sense 10-Year Battery Combination Smoke Carbon Monoxide Alarm Detector with Large LCD Display (Standalone Model)

    12% Off
    9.1
    Excellent
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  • 6

    3 Pack Combination Smoke Carbon Monoxide Alarm Detector Battery Operated, Portable Smoke and Co Alarm for Home Bedroom Travel，Easy to Install
    ARIKON

    3 Pack Combination Smoke Carbon Monoxide Alarm Detector Battery Operated, Portable Smoke and Co Alarm for Home Bedroom Travel，Easy to Install

    31% Off
    • alarm:Smoke and CO detector
    • sensor:Photoelectric and Electrochemical
    • batteries:N/A
    • power source:N/A
    • style:2-in-1 Precision
    9.0
    Excellent
    Our Rating

  • 7

    X-Sense Smoke Detector Carbon Monoxide Detector Combo, 10-Year Battery Smoke Detector with Display, Standalone Model SC01, Single Pack
    X-Sense

    X-Sense Smoke Detector Carbon Monoxide Detector Combo, 10-Year Battery Smoke Detector with Display, Standalone Model SC01, Single Pack

    • alarm:Loud 85 dB
    • sensor:Photoelectric, Electrochemical
    • batteries:2 Lithium Metal
    • power source:10-Year Sealed Battery
    • style:N/A
    8.7
    Very 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)
    oumebiu

    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)

    • color:White
    • power source:AC
    • alarm:Audible and Visual
    • sensor:Catalytic
    • dimensions:4.7D x 1.93W x 2.05H
    8.6
    Very Good

  • 9

    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

    35% Off
    8.4
    Good
    Our Rating

  • 10

    First Alert Combination Smoke & Carbon Monoxide Alarm, Battery Operated Detector with Test & Silence Button, SMCO100, 1-Pack
    First Alert

    First Alert Combination Smoke & Carbon Monoxide Alarm, Battery Operated Detector with Test & Silence Button, SMCO100, 1-Pack

    8.3
    Good