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10 Best Gas Leak Detectors 2025 in the United States
#1
Winner
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)
The 4-in-1 Upgraded Combination Natural Gas Leak Detector and Carbon Monoxide Detector is designed to offer comprehensive protection against various gas leaks and carbon monoxide, making it ideal for home, RV, hotels, and cruise ships. This device is equipped with dual sensors and can detect carbon monoxide, methane, propane, and several other flammable gases, providing a rapid response through a dual alarm system that includes both sound and light alerts.
Rating
10.0
Chosen by1,410
Type of Gas Detected
Sensitivity
Power Source
Most important from
1491 reviews
#2
4-in-1 Natural Gas Leak Detector & Carbon Monoxide Detectors with Natural, Propane, Co & Gas Leak Detector - Carbon Monoxide Detectors Plug in -Temperature & Humidity Detectors for Home, RV (2 Packs)
The NICGOL 4-in-1 gas leak and carbon monoxide detector is designed to keep homes and RVs safe by detecting natural gas, propane, and carbon monoxide, while also monitoring temperature and humidity. It uses a catalytic sensor with good sensitivity, alerting you quickly if dangerous gas levels or CO concentrations are present. The detector combines loud alarms (≥85dB) with flashing lights for clear warnings, which is helpful if you are in a noisy environment or not looking directly at the device.
Rating
9.1
Type of Gas Detected
Sensitivity
Power Source
Most important from
1491 reviews
#3
testo 310 II Combustion Analyzer HVAC – Combustion Leak Tester for Temperature, Flue Gas & Pressure – Natural Gas Leak Detector with Smart App and Probe
The testo Combustion Analyzer 310 II is designed primarily for HVAC professionals and technicians who need to check heating systems for gas leaks and combustion efficiency. It detects several gases including oxygen and carbon monoxide, which helps ensure safety by identifying potential leaks or incomplete combustion. Its sensors are highly sensitive, offering precise measurements of temperature, flue gases, and pressure, which makes it reliable for detailed analysis. The device runs on a rechargeable lithium-ion battery and includes an audible alarm to alert users of dangerous gas levels.
Rating
9.1
Type of Gas Detected
Sensitivity
Power Source
Most important from
347 reviews
Top 10 Best Gas Leak Detectors 2025 in the United States
#1
Winner
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)
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)
Type of Gas Detected: carbon monoxide, methane, propane
Power Source: AC
Alarm Type: Audible and Visual
Installation Location: home, RV, hotels, cruise ships
Chosen by 1410 this week
4-in-1 Natural Gas Leak Detector & Carbon Monoxide Detectors with Natural, Propane, Co & Gas Leak Detector - Carbon Monoxide Detectors Plug in -Temperature & Humidity Detectors for Home, RV (2 Packs)
4-in-1 Natural Gas Leak Detector & Carbon Monoxide Detectors with Natural, Propane, Co & Gas Leak Detector - Carbon Monoxide Detectors Plug in -Temperature & Humidity Detectors for Home, RV (2 Packs)
Type of Gas Detected: natural gas, propane, carbon monoxide
Sensitivity: good
Power Source: AC
Alarm Type: Audible and Visual
Installation Location: home or mobile setting
testo 310 II Combustion Analyzer HVAC – Combustion Leak Tester for Temperature, Flue Gas & Pressure – Natural Gas Leak Detector with Smart App and Probe
testo 310 II Combustion Analyzer HVAC – Combustion Leak Tester for Temperature, Flue Gas & Pressure – Natural Gas Leak Detector with Smart App and Probe
Type of Gas Detected: oxygen, carbon monoxide
Sensitivity: highly sensitive
Power Source: rechargeable lithium-ion battery
Alarm Type: audible
Certification and Standards: accuracy standards, calibration docs
PT205 Natural Gas Detector with Audible & Visual Alarm, Gas Leak Detector with%LEL Value of Methane, Butane, Propane for Home, RV (Includes Batteryx2)-Orange
PT205 Natural Gas Detector with Audible & Visual Alarm, Gas Leak Detector with%LEL Value of Methane, Butane, Propane for Home, RV (Includes Batteryx2)-Orange
Type of Gas Detected: methane, propane, butane, natural gas
Sensitivity: %LEL Value
Power Source: Battery Powered
Alarm Type: Audible, Visual
Installation Location: home, RVs, DIY projects
Certification and Standards: CE, FCC, RoHS, UKCA
Nitrogen Gas Detector by Forensics | Portable Analyzer for N2 Leaks | USA NIST Calibration | USB Recharge | Computer Data Logging |
Nitrogen Gas Detector by Forensics | Portable Analyzer for N2 Leaks | USA NIST Calibration | USB Recharge | Computer Data Logging |
Type of Gas Detected: Nitrogen via oxygen depletion
Power Source: Rechargeable lithium-ion battery
Certification and Standards: Calibration and quality certificates
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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: CO, H2S, O2, combustible gases
Power Source: Battery powered, rechargeable lithium-ion
Alarm Type: Visual
Klein Tools ET120 Gas Leak Detector, Combustible Gas Leak Tester with 18-Inch Gooseneck Has Range 50-10,000 ppm, Includes Pouch, Batteries
Klein Tools ET120 Gas Leak Detector, Combustible Gas Leak Tester with 18-Inch Gooseneck Has Range 50-10,000 ppm, Includes Pouch, Batteries
Type of Gas Detected: Combustible Gas
Sensitivity: 50 to 10,000 ppm
Power Source: Battery Powered
Alarm Type: Audible and Visual
TPI Combustible Gas Leak Detector with Alarm
TPI Combustible Gas Leak Detector with Alarm
Type of Gas Detected: Combustible gases like methane
Sensitivity: 10 ppm methane
Alarm Type: Audible, Visual
Installation Location: Indoor use
Certification and Standards: Pending UL 913 safety approval
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
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: Natural gas, methane, propane
Sensitivity: 50-1,000 ppm for methane
Power Source: Battery Powered
Alarm Type: Audible, Visual
#10
TPI HXG-2D Sensit Combustible Gas Leak Detector with Hard Carrying Case, Digital Display, 3 x C Cell Batteries, 10ppm Sensitivity, 16" Gooseneck Length
TPI HXG-2D Sensit Combustible Gas Leak Detector with Hard Carrying Case, Digital Display, 3 x C Cell Batteries, 10ppm Sensitivity, 16" Gooseneck Length
Type of Gas Detected: combustible gases like methane, propane
Sensitivity: 10 ppm for methane
Power Source: three C cell batteries
Alarm Type: Audible, Visual
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Buying Guide for the Best Gas Leak Detectors
Choosing the right gas leak detector is crucial for ensuring safety in your home or workplace. Gas leak detectors are designed to alert you to the presence of dangerous gases, helping to prevent accidents and health hazards. When selecting a gas leak detector, it's important to consider several key specifications to ensure you get a device that meets your needs and provides reliable performance.Type of Gas DetectedGas leak detectors can be designed to detect different types of gases such as natural gas, propane, carbon monoxide, or a combination of these. This spec is important because it determines the kind of gas hazards the detector can identify. If you use natural gas for heating, cooking, or other purposes, you'll need a detector that can sense natural gas. For homes with propane appliances, a propane detector is essential. Some detectors can sense multiple gases, providing broader protection.
SensitivitySensitivity refers to the detector's ability to detect low levels of gas. This is important because higher sensitivity means the detector can alert you to a leak before it becomes dangerous. Sensitivity is usually measured in parts per million (ppm). Detectors with higher sensitivity (lower ppm) are better for early detection. For general home use, a sensitivity of around 10-50 ppm is typically sufficient. For industrial or high-risk environments, you might need a detector with even higher sensitivity.
Power SourceGas leak detectors can be powered by batteries, plugged into an electrical outlet, or hardwired into your home's electrical system. This spec is important because it affects the detector's reliability and convenience. Battery-powered detectors are easy to install and can continue to operate during power outages, but they require regular battery replacement. Plug-in detectors are convenient and don't need battery changes, but they won't work during a power outage unless they have a battery backup. Hardwired detectors are the most reliable but require professional installation.
Alarm TypeThe alarm type refers to how the detector alerts you to the presence of gas. This is important because it affects how quickly and effectively you can respond to a leak. Common alarm types include audible alarms (loud beeping or sirens), visual alarms (flashing lights), and digital displays showing gas levels. Some detectors also offer smartphone alerts or integration with smart home systems. For most users, a combination of audible and visual alarms is ideal, ensuring you notice the alert even if you're not in the same room.
Installation LocationThe installation location is where the detector should be placed for optimal performance. This is important because gas behavior varies; for example, natural gas rises while propane sinks. Detectors should be installed according to the type of gas they detect. For natural gas, place the detector high on a wall or ceiling. For propane, install it near the floor. Some detectors come with guidelines for placement, ensuring you get the best performance. Consider where gas appliances are located and install detectors nearby for maximum safety.
Certification and StandardsCertification and standards indicate that the detector has been tested and meets safety and performance criteria. This is important because it ensures the detector is reliable and effective. Look for detectors that meet standards such as UL (Underwriters Laboratories) or CSA (Canadian Standards Association). These certifications provide assurance that the detector has undergone rigorous testing. Always choose a certified detector to ensure it meets safety requirements and provides accurate detection.