Updated: July, 2025

Best natural gas leak detectors

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1

Klein Tools

9.9

Exceptional

Klein Tools ET120 Gas Leak Detector, Combustible Gas Leak Tester with 18-Inch Gooseneck Has Range 50 - 10,000 ppm, Includes Pouch, Batteries

Why we love it

Wide detection range up to 10,000 ppm.

Adjustable sensitivity for precise detection.

Flexible gooseneck for hard-to-reach areas.

Main highlights

Wide Detection Range
Detects gas concentrations from 50 to 10,000 ppm for versatile monitoring.

Ideal for Leak Detection
Perfect for identifying gas leaks in residential and commercial spaces.

Praised Feature: Accuracy
Highly praised for its accuracy in finding hidden gas leaks.

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2

FORENSICS DETECTORS FD

9.8

Exceptional

Natural Gas Leak Detector | Natural Gas, Propane, LPG, LNG | 10ft Drop Test Pass |

Main highlights

SHOCK: ABS housing can take a 10ft drop.

DISPLAY: Large color LCD screen with temperature.

️ ACCURATE: Sensitive made in Japan sensor.

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3

TOPTES

9.5

Excellent

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

Why we love it

Detects multiple gas types quickly.

Includes batteries; ready to use.

Compact and portable design.

Main highlights

Comprehensive Gas Detection
Detects LPG, methane, propane, and more, preventing gas explosions.

Ideal for Home and RV Use
Perfect for homeowners and RV enthusiasts with gas appliances.

Highly Praised Accuracy
Customers appreciate its accuracy in pinpointing gas leaks.

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4

TOPTES

9.4

Excellent

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

Why we love it

Detects multiple combustible gases quickly.

Flexible probe for hard-to-reach areas.

Visual and audible alarms for safety.

Main highlights

Accurate Detection of Combustible Gases
The TOPTES PT520A detects methane, propane, and other gases quickly and accurately.

Ideal for Home and RV Use
Perfect for detecting gas leaks in homes, RVs, and tight spaces.

Praised for Ease of Use
Customers love the easy setup, operation, and clear instructions.

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5

Kidde

9.1

Excellent

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

Why we love it

Easy plug-in installation.

Loud alarm ensures awareness.

Reliable dual gas detection.

Main highlights

Easy Installation with Battery Backup
Simply plug into a 120V outlet; 9V battery ensures operation during power outages.

Ideal for Gas and CO Monitoring
Perfect for homes with natural gas, propane, or potential CO leaks.

Highly Rated Audible Alarm
Customers praise the loud 85-decibel alarm for effective alerting.

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6

TOPTES

9.0

Excellent

Natural Gas Detector, TopTes PT177 Gas Leak Detector with Audible & Visual Alarm, Portable Gas Sniffer to Locate Combustible Leak Sources Like Methane, Propane for Home (Includes Battery x2)-Orange

Why we love it

Quick detection within seconds.

Compact and portable design.

User-friendly with audible and visual alerts.

Main highlights

Quick and Easy Leak Detection
Detects combustible gas leaks within 0.5 to 3 seconds with visual and audible alarms.

Ideal for Home Safety
Perfect for homeowners with gas appliances, BBQ grills, and fireplaces.

Praised for Ease of Use
Customers love its compact size and straightforward operation.

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7

NICGOL

8.9

Very Good

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

Main highlights

Quick Alert with Dual Alarm System: RV carbon monoxide detectors designed with both sound and flashing light alerts, this detector activates when gas levels reach dangerous thresholds (CO ≥ 150PPM or natural gas ≥ 5%LEL). It emits a loud ≥ 85 dB alarm and flashing red light, alerting you and your family instantly in the event of a leak.

Energy-Efficient & Eco-Friendly: Carbon monoxide detectors plug-in design supports 110V–220V AC with ultra-low power consumption (≤ 2W). Built-in electronic sensors offer long-term use without the need for frequent replacements—saving energy and reducing waste for a more sustainable home safety solution.

4-in-1 Advanced Detection: This upgraded 4-in-1 gas & carbon monoxide detector combines sensors for natural gas, carbon monoxide, temperature, and humidity in a single compact device. Features dual sensors and dual alarms for fast, accurate alerts. Detects CO, coal gas, and more.

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8

HSTMYFS

8.8

Very Good

HSTMYFS Natural Gas Leak Detector, Plug-in Propane Natural Gas Detector for Home Kitchen RV, Combustible & Explosive Gas Alarm for LPG, LNG, Methane

Why we love it

Detects multiple gas types.

Easy plug-in installation.

Reliable audible alarm.

Main highlights

Versatile Gas Detection
Detects LPG, methane, CNG, propane, and natural gas for home safety.

Ideal for Home Use
Best for kitchens, RVs, and areas needing gas leak detection.

Easy Installation Praised
Customers appreciate simple plug-in setup and reliable performance.

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9

TOPTES

8.7

Very Good

TopTes PT210S Gas Leak Detector, Natural Gas Detector with 4-inch Probe, Propane Leak Detector Locating Combustible Gases Like Natural Gas, Methane for Home, Measures%LEL (Incl. Batteries) - Orange

Why we love it

Portable and easy to carry.

Detects gas leaks swiftly.

Includes visual and audible alerts.

Main highlights

Portable Design and Detection
Features a 4-inch probe and portable design for detecting hard-to-reach gas leaks.

Ideal for Home Safety
Perfect for detecting combustible gases like propane and methane in home environments.

Ease of Use Praised
Customers appreciate its simplicity and effectiveness in detecting gas leaks.

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10

zangang

8.6

Very Good

Natural Gas Leak Detector, Portable Gas Sniffer with Audible & Visual Alarm, for Combustible Gas Like Methane, Propane -50A

Main highlights

【LED & Audio Gas Alarm】Press the red button on and warm-up for a 20-second preheating periodg. Point it towards suspicious areas, and it quickly detects leaks in just 3 seconds. The gas detector is equipped with a visual alarm and an audible alarm. When the machine detects a gas, the bar graph on the display will increase as the concentration increases, and the display will turn red when the gas concentration is too high. At the same time, the alarm beeps and the frequency of the beep increases as the concentration increases.

【Combustible Gas Leak Detector】The product is suitable for detecting liquefied petroleum gas, methane, ethane, propane, butane, natural gas, coal gas, gas fuel, liquefied natural gas, etc., accurately locating gas leakage, reducing the risk of gas explosion, and ensuring the safety of family and property.

【Batteries Included and Directions for using】Package include 1*50A Gas Leak Detector,2x AAA Batteries, 1x User Manual. Directions for using: 1. The system warm-up time less than 60 seconds. 2. LCD indicates battery replacement status. 3. Automatic power off after 5 minutes without operation or gas detection.

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Our top pick

1

Klein Tools ET120 Gas Leak Detector, Combustible Gas Leak Tester with 18-Inch Gooseneck Has Range 50 - 10,000 ppm, Includes Pouch, Batteries
The Klein Tools ET120 Gas Leak Detector is a reliable tool for detecting combustible gas leaks with a wide range of 50 to 10,000 ppm. Its adjustable sensitivity settings allow users to switch between high and low sensitivity for accurate detection, making it ideal for both residential and commercial applications. The device features enhanced visual and audible alerts, with five red LEDs and an 85dB alarm that intensify as gas concentration increases, ensuring users are promptly notified of potential dangers. The 18-inch flexible gooseneck design helps reach difficult areas, while the comfortable, over-molded body ensures ease of use in demanding environments. Additionally, the automatic zero-point calibration at power-up guarantees consistent accuracy. Customers have praised its effectiveness in pinpointing elusive leaks, contributing to its 4.5-star rating. This gas leak detector is a practical and essential tool for ensuring safety and peace of mind.

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