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10 Best Gas Detectors 2025 in the United States
#1
Winner
Kidde Carbon Monoxide Detector, Plug In Wall with AA Battery Backup, Test-Hush Button
The Kidde Carbon Monoxide Detector is a reliable device designed to keep your home safe from carbon monoxide leaks. One of its main strengths is the ease of installation; you can simply plug it into any standard 120V outlet. Additionally, it has a battery backup with 2-AA batteries included, ensuring continuous protection even during power outages. The detector uses an electrochemical sensor, which is known for its accuracy in detecting carbon monoxide levels, and emits an 85-decibel alarm to alert you if dangerous levels are detected. This audible alarm is loud enough to be heard throughout your home, which is crucial for safety.
Rating
9.9
Chosen by1,135
Power Source
Most important from
34690 reviews
#2
Kidde Carbon Monoxide Detector, Battery Powered CO Alarm with LEDs, Test-Reset Button, Low Battery Indicator, Portable
The Kidde Carbon Monoxide Detector is a battery-powered device designed for easy installation and portability. It utilizes electrochemical sensor technology to detect CO gas effectively. The detector operates on 2-AA batteries, making it functional even during power outages.
Rating
9.8
Response Time
Power Source
Most important from
34515 reviews
#3
Kidde Carbon Monoxide Detector, Propane, Natural, Methane, & Explosive Gas Alarm, Plug-In Wall with 9-Volt Battery Backup, Digital LED Display
The Kidde Carbon Monoxide Detector is a versatile gas alarm that detects not only carbon monoxide but also propane, natural gas, methane, and other explosive gases. One of its standout features is the easy installation; it plugs directly into a standard 120V outlet and comes with a 9-volt battery backup, ensuring it remains operational during power outages. The digital LED display provides real-time feedback on gas levels, making it user-friendly, especially for those who aren't tech-savvy. The 85-decibel alarm is loud enough to alert you effectively in case of danger, which is essential for safety. Additionally, the Peak Level Memory feature helps keep track of when gas was last detected, which is a handy function for maintaining awareness of your home’s safety status.
Rating
9.6
Type of Gas Detected
Detection Range
Power Source
Most important from
16187 reviews
Top 10 Best Gas Detectors 2025 in the United States
#1
Winner
9.9 score
Kidde Carbon Monoxide Detector, Plug In Wall with AA Battery Backup, Test-Hush Button
Kidde Carbon Monoxide Detector, Plug In Wall with AA Battery Backup, Test-Hush Button
Type of Gas Detected: Carbon Monoxide
Sensor Type: Electrochemical
Power Source: Plug In, 2 AA batteries
Alarm Type: Audible, 85-decibel
Durability and Environmental Suitability: Up to 37.8°C, 10%-95% humidity
Chosen by 1135 this week
Kidde Carbon Monoxide Detector, Battery Powered CO Alarm with LEDs, Test-Reset Button, Low Battery Indicator, Portable
Kidde Carbon Monoxide Detector, Battery Powered CO Alarm with LEDs, Test-Reset Button, Low Battery Indicator, Portable
Type of Gas Detected: Carbon Monoxide
Sensor Type: Electrochemical
Power Source: Battery Powered
Alarm Type: 85-decibel alarm
Durability and Environmental Suitability: 40°F to 100°F, 5% to 95% humidity
Kidde Carbon Monoxide Detector, Propane, Natural, Methane, & Explosive Gas Alarm, Plug-In Wall with 9-Volt Battery Backup, Digital LED Display
Kidde Carbon Monoxide Detector, Propane, Natural, Methane, & Explosive Gas Alarm, Plug-In Wall with 9-Volt Battery Backup, Digital LED Display
Type of Gas Detected: carbon monoxide, propane, natural gas, methane
Sensor Type: Electrochemical
Power Source: Plug In, 9-volt battery backup
Alarm Type: Audible, 85-decibel
Durability and Environmental Suitability: Humidity: 5% to 95%, Temp: 100°F
PT520A Natural Gas Detector, Gas Leak Detector with 17-Inch Gooseneck, Locating The Source Like Propane, Methane, and Butane for Home and RV (Includes Battery x3) - Orange
PT520A Natural Gas Detector, Gas Leak Detector with 17-Inch Gooseneck, Locating The Source Like Propane, Methane, and Butane for Home and RV (Includes Battery x3) - Orange
Type of Gas Detected: methane, propane, natural gas, LPG, butane
Detection Range: 50-10,000 ppm for methane
Response Time: 0.5 seconds
Sensor Type: Electrochemical
Power Source: Battery Powered
Alarm Type: Audible & Visual
Durability and Environmental Suitability: Up to 122°F, 80% humidity
TopTes PT199 Natural Gas Leak Detector with Audible & Visual Alarm, Portable Gas Sniffer to Locate Combustible Sources Like Methane, Propane for Home(Includes Battery x2)-Orange
TopTes PT199 Natural Gas Leak Detector with Audible & Visual Alarm, Portable Gas Sniffer to Locate Combustible Sources Like Methane, Propane for Home(Includes Battery x2)-Orange
Type of Gas Detected: methane, propane, butane
Detection Range: 50-1,000 ppm
Response Time: 0.5 seconds
Sensor Type: Gas Sensitive Semiconductor
Power Source: Battery Powered
Alarm Type: Audible, Visual
Durability and Environmental Suitability: Temp: 122°F, Humidity: 95%
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3 Packs Combination Gas & Carbon Monoxide Detectors, Plug in Natural Gas Detector & Carbon Monoxide Alarm, CO Detector Alarm & Propane, Methane, Explosive Gas Detector for Home,RV,Easy to Install
3 Packs Combination Gas & Carbon Monoxide Detectors, Plug in Natural Gas Detector & Carbon Monoxide Alarm, CO Detector Alarm & Propane, Methane, Explosive Gas Detector for Home,RV,Easy to Install
Type of Gas Detected: natural gas, propane, methane, CO
Sensor Type: Catalytic, Electrochemical
Power Source: Plug in
Alarm Type: 85DB Alarm
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
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
Type of Gas Detected: Natural gas, propane, carbon monoxide
Sensor Type: Reliable, sensitive, accurate sensor
Power Source: Plug in
Alarm Type: 85dB alarm
Durability and Environmental Suitability: Limited durability in extreme conditions
2 Pack Combination Gas & Carbon Monoxide Detectors - Plug in CO Alarm & Natural Gas Detector with Digital Display, CO Detector & Combustible Gas Detector for Home, Easy to Read
2 Pack Combination Gas & Carbon Monoxide Detectors - Plug in CO Alarm & Natural Gas Detector with Digital Display, CO Detector & Combustible Gas Detector for Home, Easy to Read
Type of Gas Detected: Natural gas, CO, LPG, Methane, Coal gas
Sensor Type: Catalytic, Electrochemical
Power Source: Plug in or Battery
Alarm Type: 85-decibel alarm
Durability and Environmental Suitability: 15%~90% humidity
RKI 72-RA-C GX-3R LEL / O2 / H2S / CO with Li-Ion Battery Pack and 100-240 VAC Charger
RKI 72-RA-C GX-3R LEL / O2 / H2S / CO with Li-Ion Battery Pack and 100-240 VAC Charger
Type of Gas Detected: LEL, O2, H2S, CO
Sensor Type: Electrochemical
Power Source: Battery Powered, Li-Ion pack
Alarm Type: Visual
Durability and Environmental Suitability: Solid build, suitable for various conditions
#10
7.7 score
BW Technologies MCXL-XWHM-Y-NA GasAlertMicroClip XL 4 Gas Detector, CO, H2S, LEL and O2, Yellow
BW Technologies MCXL-XWHM-Y-NA GasAlertMicroClip XL 4 Gas Detector, CO, H2S, LEL and O2, Yellow
Type of Gas Detected: hydrogen sulfide, oxygen, carbon monoxide, combustibles
Power Source: Battery Powered
Alarm Type: Visual
Durability and Environmental Suitability: Durable, impact-resistant, non-corrosive case
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Buying Guide for the Best Gas Detectors
Choosing the right gas detector is crucial for ensuring safety in environments where harmful gases may be present. Gas detectors are used to identify the presence of gases in an area, often as part of a safety system. When selecting a gas detector, it's important to consider the specific needs of your environment and the types of gases you need to detect. Here are some key specifications to consider when choosing a gas detector, along with explanations to help you understand their importance and how to choose the right one for your needs.Type of Gas DetectedThis specification indicates which gases the detector can identify. It's important because different environments may have different types of gases that need to be monitored. Common gases include carbon monoxide, methane, hydrogen sulfide, and oxygen. To choose the right one, identify the specific gases present in your environment and select a detector that can accurately detect those gases.
Detection RangeThe detection range specifies the concentration levels of gas that the detector can measure, usually in parts per million (ppm) or percentage by volume. This is important because it determines the sensitivity of the detector. For environments with low levels of gas, a detector with a lower detection range is needed, while higher ranges are suitable for areas with higher gas concentrations. Assess the typical gas concentration levels in your environment to choose the appropriate detection range.
Response TimeResponse time refers to how quickly the detector can identify the presence of gas and alert the user. This is crucial for safety, as faster response times can lead to quicker evacuation or mitigation actions. Response times are usually measured in seconds. For high-risk environments, a detector with a very fast response time is essential. Consider the urgency of detection in your environment to determine the appropriate response time.
Sensor TypeGas detectors use different types of sensors, such as electrochemical, catalytic bead, infrared, and semiconductor sensors. Each type has its strengths and weaknesses. For example, electrochemical sensors are good for detecting toxic gases, while catalytic bead sensors are better for combustible gases. Understanding the types of gases you need to detect will help you choose the right sensor type.
Power SourceGas detectors can be powered by batteries, electricity, or solar power. The power source is important for ensuring continuous operation. Battery-powered detectors offer portability but require regular battery changes, while electric-powered detectors provide constant power but may be limited by the availability of outlets. Solar-powered detectors are useful in remote locations. Consider the availability of power sources in your environment to choose the best option.
Alarm TypeThe alarm type indicates how the detector alerts users to the presence of gas, such as through audible alarms, visual indicators, or vibration alerts. This is important for ensuring that the alert is noticed promptly. Audible alarms are useful in noisy environments, visual indicators are good for quiet areas, and vibration alerts are helpful in situations where users may not be able to hear or see alarms. Choose an alarm type that suits the conditions of your environment.
Durability and Environmental SuitabilityThis specification refers to the detector's ability to withstand environmental conditions such as temperature, humidity, and physical impact. Durability is important for ensuring the detector remains functional in harsh conditions. For example, detectors used in industrial settings may need to be rugged and resistant to dust and water. Assess the environmental conditions of your location to choose a detector that can withstand those conditions.