The 10 BEST Combustible Gas Leak Detectors in 2022 [Reviewed by Experts]

Written By Kim Goodwin is reader supported. When you buy through links on our site, we may earn an affiliate commission at no cost to you.

Safety is very important when we go for an apartment or industry, the very first thing we do is installing the security alarm, smoke detector or any other equipment. Carbon monoxide and natural gases are too harmful to humans to escape from the dangerous gas leaks you must have a proper gas leak detector.

The gas leak detector is mandatory to be installed in every home or workplaces but most of the people don’t know the importance of it. These detectors alert you either through flashing light, beep sound or by other indications when there are leakages. Our team experts have researched and spent nearly 48 hours for finding the best products on the market. Check our top list of best combustible gas leak detectors to quickly pick the reliable option within a budget…For more information click here(Source).

Table: 10 Best Gas Leak Detectors

UEi Test Instruments CD100A[ 5 ]
Amprobe GSD600 Gas Detector[ 4.9 ]
Kidde Nighthawk Gas Leak Detector[ 4.8 ]
RIDGID 36163 Gas Leak Detector[ 4.8 ]
Combustible Gas Detector[ 4.7 ]
MASTECH MS6310 Gas Detector[ 4.7 ]
Signstek Portable Gas Detector[ 4.6 ]
General Tools PNG2000A Gas Detector[ 4.6 ]
Techamor Y201Gas Detector[ 4.5 ]
Plug-in Natural Gas Detector[ 4.5 ]

Best Gas Leak Detectors- 10 Detectors Reviewed[2020]

1. UEi Test Instruments Combustible Gas Leak Detector

The UEi CD100A is an award-winning product in our list because it can detect a broad range of gases including natural gas, butane, and propane. This gas leak detector circuit comes with an extra-long 18-inch gooseneck which helps to hit in hard to reach targets. UEi Gas detector is a 9 Volt battery-powered tool that’s why it can detect gas as low as 50ppm.


You can use this equipment to detect a whole host of combustible gas leaks, so it is one of the best gas detectors for work applications. As the sensor is highly sensitive and accurate it’s possibly easy to reach the target. The device is very easy to use as it offers one-hand operation, but on the flip-side, it doesn’t have an auto-calibration feature. Adjustable sensitivity is mandatory for any detector; this is an added advantage for UEi.

LED lights

The LED lights on the tip produce bright light and it allows you to reach the tight spots during gas leaks. There are two indicators which are audio and visual; the audio indicator alerts you by ticking sound when the detector senses leaking gas. 

UEi gas leak detector provides exact and reliable results; it comes with a tip cover which illuminates the area of leak easily, so you can visibly detect several gases. It’s one of the versatile units which is ideal to use in hard to reach areas. 


Another interesting feature of UEi is the ease of use and durability; it has a solid semiconductor indicator for instantaneous detection also there is a sensor cover for protection. The headphone jack allows you to silently detect the leaks without disturbing or alarming others. The tic rate can be adjusted with the help of side knob the major advantage of this feature is, when you approach the leak it will start to accelerate, finally, you can find the direction of flow.


  • 18-inch flexible Gooseneck
  • Adjustable Sensitivity
  • Tip light Sensor


  • No auto-calibration

2. Amprobe GSD600 Gas Leak Detector

The Amprobe GSD600 is one of the fast responding gas leak detectors for propane and methane gas, this unit is highly durable. The sensor cap protects the entire unit and sensor that ensures longevity. It comes with five distinct LED lights and PPM ratings so that you can find how much gas is in the air. Its LED lights offer noise-free indication for you and have an automatic calibration feature.

Visual display

One of the remarkable features of AmprobeGSD600 is the display panel with LED’s which clearly indicates the concentration of methane and propane. This can be used to identify whether the threshold level is crossed or not. With this feature, the gas leaks are pinpointed for the closed system of piping. In calm workplaces, you can use the mute function and LED displays whereas in loud environments the standard earphone jack can be used. It can be powered by a 9V power adapter.


It has flexible, stainless steel which is 17.6 inches long so that you can easily hit the hard to reach targets. In presence of propane or methane gas, you’ll get alert sounds which are both audio and visual. Its LED display has a 5-level alarm which indicates how much of leaked gas is in the environment. This detector automatically calibrates itself as soon as the power is on and it requires a 60-second warm-up time, after the power on.

The Amprobe gas Leak Detector provides automatic calibration and helps to keep it accurate; one of the interesting features is the low power indicator as it alerts you when you’re on low power, the auto power-off feature will shut down after 10 minutes.


This detector can easily detect both methane and propane; usually, propane will be found in both butane service and LPG, so this equipment is suitable for all types of combustible gas systems. The Amprobe Gas detector can detect methane from 40ppm to 640ppm, and propane between 35ppm and 580ppm.

In above pictures, you can see that the huge container is being checked by the Amprobe gas leak detector to find whether there any leaks, it efficiently works and produces accurate results thus damages can be avoided. This equipment is mostly used in industries because it alerts you even if there is a minor leak. 


  • Quickly Pinpoints Gas leaks
  • Built-in Earphone Jack
  • Automatic Calibration


  • Detects Fewer Gases 

3. Kidde Nighthawk Gas Detector

The Kidde Nighthawk Gas leak detector is a dual function unit which detects CO and combustible gases. This gas leak detection equipment monitors 24/7 for gas as well as for sneaky carbon monoxide, for every 15 seconds, the detector gives a report and sounds an alarm if the gas levels are extreme.

Digital Display

It has an excellent digital display which is bright enough to read from afar, you can see the level of carbon monoxide that the entire unit is sensing. It shows and stores the CO levels from 30 to 999 ppm. You can use this feature to see the peak level memory i.e. the highest CO or combustible gases detected. There is a test or reset button which quickly tests the device or stops the alarm.

Mounting Options

The Kidde COEG-3 comes with three different mounting options; one of the best features is that you can plug it into any wall outlet. So the installation is very simple, keep in mind that the 6-foot power cord should be long for you to plug it wherever you want. It is designed with a long 18-inch swan neck; the tip has a light that illuminates the target precisely.

This is one of the best carbon monoxide as well as explosive gas detectors; Nighthawk can detect all leakages no matter where you place it because it is very powerful. It is an excellent value for money and the best device you can get.

Audible Alarm

Kidde can detect the gas leak even from long distances, after the leak the device will start to sound; you can hear it even from a mile away- that’s how loud the detector is. With this feature you won’t sleep if leakages occur, sometimes you may feel loud but it’s better to hear and clear than no hear it at all.


  • Clear Display
  • Convenient mounting options
  • Alarm is highly audible 


  • 9-volt backup can increase your bills

4. RIDGID 36163 Model micro CD-100 Gas Detector

RIDGID is the best combustible gas detector with an ergonomic and resistant design; it features a 16-inch probe hose for gas leak detection. This device has a triple alarm system which alerts you when the gas leaks through visual, sound, and vibration cues. It is a compact detector which is backed by a full lifetime warranty; the CD-100 is attached to detect the presence of hydrogen, propane, ethane, methane, benzene, etc…


The RIDGID comes with adjustable sensitive settings that allow you to detect the low-level gases also; with the 15-inch flexible probe, it’s quite easy to indicate the leaks wherever it is. By pulling through the nozzle it detects the gas from a specific point and has a highly accurate sensor to give the exact result.
If a gas leak is detected, a loud alarm will beep at you, a bright light will blink at you so it’s easy to escape from those leakages.


You can toggle between high and low, the range of high sensitivity starts from 40ppm to 640ppm and the low sensitivity gas ranges from 400ppm to 6400ppm. The sensor is similar to the one used in Amprobe’s detector, this is capable of detecting even the low levels of gases and determines the quantity.

This is very convenient and highly accurate detector which can be used both at home and workplace, it weighs just 1.3 pounds. The Tri-mode function allows selecting between audible, visual, and vibration alerts to suit your environment.


The equipment is covered with thick, durable plastic and a well-designed rubber cover, so you can use it at any kind of environment no matter where you’re using it. Its ergonomic and lightweight design allows you to use it for a long time. This equipment detects the gas leakages within 2 seconds which will be helpful for you.


  • Ergonomic Design
  • Adjustable sensitive settings
  • Compact and simple to use 


  • It takes a long time to calibrate 

5. Inficon Combustible Gas Detector

Inficon is one of the ideal types of the gas detector and it is one of the popular brands in the market as it quickly detects the methane leaks, it can also detect butane, petroleum gas, ethane, aromatic salts and much more. It weighs only 2 pounds, but twice as sensitive as other gas leak detectors so I’d suggest that Inficon Gas Detector is a great buy. This Gas leak detector with an alarm is very useful for home purposes or any other working environment.


With a sensitive rate of 5ppm, this combustible gas detector is capable of detecting 5 percent of methane. If the level goes beyond the range you’ll get an alert through variable intensity audio as well as multiple LED lights. There are numerous LED lights which alert you in case of any gas leaks.


Auto zeroing feature in the leak test area provides additional accuracy so that it could be easy for pinpointing gas leaks in gas valves, heating systems, and pipelines. You can adjust the sensitivity to exactly locate the leak point, so it’s an excellent choice with auto zeroing to ignore background gas.

Autofocus is one of the best features of Inficon as it helps to reach even the long distant targets easily no matter how far it is; with the crystal clear display, you can know the number of leaks in heating systems or other equipment.


This is one of the most versatile detectors because of its lightweight and sensitivity, with a response time of 2 seconds it can detect the gas leakages also has an alarm sensitivity of 50ppm methane. You can fit this detector at your home, office, industry or gas filling station because this brand offers a variety of functions.


  • Adjustable sensitivity
  • Auto-zeroing
  • Sensitive to 5ppm methane


  • Cheap and Broken

For user’s convenience we’d like to inform that, this particular product is unavailable right now, if it comes back to the market intimations will be given shortly for the customers by us.

6. MASTECH MS6310 Combustible Gas Detector

Mastech Combustible Gas Detector is a great product for any homeowner; this is a highly sensitive device so it can detect all the potentially dangerous and hard to reach spots. There is a powerful sensor that can easily detect all types of gases including propane, methane, ethane, and others. The high sensitivity added with audible and visible alerts makes this product the best one. It’s probably the cheapest detectors in the market but efficiency is too high.

Audible Alarm

This gas leak detector comes with an audible alarm that will alert you when the sensor picks up from 10% to 40% gas leakages. It’s possible to adjust the sensitivity dial just to suit the current requirements, but it will take a little bit of time to warm up to the highest sensitivity. The humidity is between 0% and 90% and the weight of this device is 570g.

Ease of Use

You can operate this natural gas leak detector with one hand; the operating temperature is between 0 and 50-degree centigrade. This detector is packed with manual regulatory sensitivity just to eliminate the gas level in background, an audible and visual alarm is included with this device.

If you need the best detector for home use, then I’d say that Mastech is the right choice, you’ll be satisfied with its overall performance.

This product works instantly to pinpoint the gas leaks also it can detect all types of gases including flammable and natural gas. It is a portable device so you can carry around and check all the potentially dangerous areas.

Detect leaks

Mastech allows us to discover leaks even in a closing duct frame with a flexible semiconductor; it detects both propane and methane within 10 seconds. The tempered steel helps to achieve the difficult areas, the flexible steel ensures durability so you can use it for a long time without any issues.


  • Audible Alarm 
  • Portable and easy to use
  • Powerful Sensors


  • Batteries are not included

For user’s convenience we’d like to inform that, this particular product is unavailable right now, if it comes back to the market intimations will be given shortly for the customers by us.

7. Signstek Portable Gas Leakage Detector

Signstek is compactly designed and portable device which pinpoints gas leaks even in hard to reach areas. It detects all kinds of gases including halogen gases, air conditioning issues, and cleaning agents, etc…This is the perfect option for every homeowner, it is another leak detector which is specially made for the technicians with a very low budget.

High sensitivity

It is designed with a highly sensitive sensor to detect any kind of refrigerant issues; with this feature, you can identify even the small leaks. Signstek boasts a flexible stainless steel probe which is capable of moving into any tight space effortlessly. It comes with an excellent audible alarm and LED lights; this will alert you in case of any leakages. There is also a sturdy storage bag in which you can keep the equipment when not in use.


Signstek is designed with a 14-inches long stainless steel probe so that you can move around freely, and go for all hard to reach areas. Another interesting feature is that multiple buttons allow simple adjustments. There is a mute button and on/off button, the first button turns off the alarm and the second button allows to adjust the sensitivity level depending on your needs.

It accurately delivers real-time sensitivity together with a level indicator which ensures that you get a real picture; also the tri-color battery display helps you to know how long you can use it before recharging it.

LED display

The LED display comes with a 6-level leak alarm as well as a tricolor display of battery power, thus making it simple to use for beginners. With a 3g/yr or 0.1oz/yr sensitivity, this equipment sense all kinds of refrigerants which are HCF, HFC’s and CFC’s. You can get it at an attractive price and enjoy the mobility.


  • Intuitive display
  • Accurate and Reliable
  • High sensitive sensor


  • The plastic body feels little fragile

8. General Tools PNG2000A Natural Gas Detector Pen

Are you looking for a compact natural gas detector? Then you can’t go for a better option than General Tools gas detector pen. It is excellent equipment which comes with a long flexible gooseneck to pinpoint the hard to reach areas. It can be used for both home and commercial purposes. It senses all kinds of gases like methane, propane, butane so this is perfect for every application.


The tiny pen-like device comes with excellent accuracy and high sensitive power, there are multiple LED lights which warns you if gas leaks, the green light shows the leak, the yellow light shows 200 PPM and the red light goes about 500 PPM. This device won’t consider the low concentrations because it is specially designed to mark the leak directly from the source.


The General Tools Pen shaped detector is not very easier to use, after installing the pair of AA batteries just hold the front of the detector near a gas source and long-press the button in the center, a few minutes later one of the three LED lights will turn on. This pen tool is solid but durability is high for all industrial environments. The build quality is good enough so it may last for a long time.

General Tool is a valuable product at a great price; there are two batteries and a color-changing light to indicate the presence of gas leaks. The PNG2000A is suitable for every combustible gas and it’s accurate as a high-end model.


As we’ve seen before, the PNG1 can detect methane, propane, and butane. It’s a little bit different to measure the volume of combustible gas; this detector uses LEL (Lower Explosion Limit) to measure the gas leaks. If there is only a small amount of gas in the air it won’t burn, on the other hand, if it has 0.25% methane then the ignition source may cause the gas to burn.


  • Compact and Portable
  • Three LED light indicators
  • Excellent accuracy


  • Short battery life

9. Techamor Y201 Gas Leak Sniffer Detector

Techamor is another portable gas leak detector which is suitable for professionals and home inspectors. This is a powerful device which can detect gas from a large distance; it comes with a flexible 12-inch long probe which works well for hard to reach and tight areas. The portable design enables you to take it around anywhere so you can use it not only at home but at job sites also.

LED lights

It is designed with an LED light which indicates the trace of any gas leak in air. You can view the leakages by various colors, if the leaks are severe it will be easy to identify by multiple color codes. It indicates the concentration using yellow for 200ppm and red for 500ppm. You can discover the gas leaks including butane, methane, LNG, and CH4.


Actually, this is a highly sensitive device so you don’t have to worry about any unexpected failures. The battery may last up to 20 hours so you can use it without interruptions until there is a gas leaking issue. The entire unit is powered by 3AAA 1.5V batteries, so it’s very easy to maintain and thus portable.

The Techamor features 30-level LED indicator, an audio indication, and gas concentration alarm to easily detect the leak point. Uses 4.8v rechargeable battery so there will not be any issues while working with it for a long time.

Easy to Use

The bright yellow Techamor is very easiest to use the device on our list, it takes only about 10 seconds to warm up after that the leaks can be registered within 2 seconds. There is a protective carrying case with which you can adjust the sensitivity to pinpoint the dangerous leakage areas.


  • Audible Alarm
  • Great Portability
  • Powerful Sensitivity


  • No batteries included

10. Plug-in Natural Gas Detector

The Youthful natural gas leak detector is ideal for home and commercial uses because it is small and convenient. The sensors can measure the concentration of gases by various technologies; the only purpose of this detector is to prevent fire and toxic exposure which is very crucial for industries as well as home if the limit is reached the sensor warns the user with a built-in alarm.


The device is wrapped with white housing which makes this product unique and attractive than other products. It is packed with high-quality electronics so you can use it without any issues for a long time. There is a wide digital display that indicates the lower explosive limit for all the gas types including methane, propane, butane, CH4 and much more.

LED lights

Plug in Natural Detector comes with a handy test button which can be used to inspect whether the device is working properly before you put it on the wall. The interface has three lights on the front panel and another one is on the top. As soon as the device is powered the light will be switched on automatically, the alert sound will be produced in case of malfunction or dangerous levels in the air.

This is the best portable product also the alarm sound is very high so you can be alerted when the gas leaks in the air. It can detect all types of gases efficiently; its ergonomic design makes it different from other product.


This product is shelled in a double-sided ABS so it is anti-corrosive, anti-pest, and anti-mildew, you can use even in the kitchen, basement, and warehouse. The digital display senses the natural gas in PPM by 80db voice warning to make sure that the alarm is audible around the home. The natural gas monitor is the major feature that automatically produces an alarm.


  • Highly Durable
  • Quick Installation
  • Attractive Digital Display


  • Works too slowly

For user’s convenience we’d like to inform that, this particular product is unavailable right now, if it comes back to the market intimations will be given shortly for the customers by us.

What to Consider When Buying Gas Leak Detector?

When you’re looking for the best gas leak detector it’s very important to buy from the reliable and trustable company, if you’re confused in choosing the best product don’t worry! We’re here to guide you with our reviews.

Why Gas leak detectors are necessary?

Gas leaks occur almost in every place because of that we may lose millions of dollars every year, not only it causes money loss but also lots of preventable deaths. To mitigate these damages it’s a wise idea to use the simple gas leak detector if properly utilized it can avert a potential disaster thus safeguarding human life and expensive equipment.

Here a man uses the gas leak detector equipment to monitor the level of pipelines, by inspecting the gas leaks potential damages can be solved.

Applications of Gas leak Detector

It is used for various purposes, let’s see the importance of detectors in the following section. 

Why Gas Alarm is needed?

It’s impossible to smell a gas leak always because you may not be in the right place to detect the gas leak or propane leak. Carbon monoxide alarms alone can’t detect the propane, natural gas/ methane, it detects only CO. But CO alarm is necessary if your home’s heating system runs on wood, oil, or gas. Gas leak detection with alarm is important to avoid fire or explosion

To install the alarm just plugin on the high wall, if you use the natural gas then mount 12” from the ceiling, in case if you have the propane gas just mount near the floor. With the continuous electronic display, it updates for every 15 seconds of the gas levels so you can stay safe.

Gas Leak Detection with soap

One of the simplest ways to detect a gas leak is to use the dishwashing soap, for that just fill a bottle with water and soap. Identify the leakage area and spray the solution into rubber tubes that connect gas appliances. To avoid leaks cover the tube with a soap solution and also in the area where rubber tubing and propane tank inlet meets. 

In this picture you can notice the leaks are covered with soap bubbles just to control the leakage of poisonous gas.

As soon as the bubbles come, replace the rubber tubing with a new one and securely attach into the propane tank. The solution must have proper viscosity for bubbles to form.

Gas leak detector for cars

If you get the gas smell from the car you should get rid of it immediately, you can’t stop the smell by an air freshener because gasoline is dangerous and it is flammable. First, you’ve to look for a leak in the fuel tank or the fuel injection line, also check at the back of the car to find if there are any drips coming from the fuel tank. To fix the gas leak you need to replace several times, investigate the complete fuel line fittings and fuel lines.

As you can see that the fuel tank is being checked by the inspector with the help of a gas leak detector, fuel lines must be thoroughly checked to avoid potential damages. 

Here, a man checks his car with a detector on the window side to identify whether there are any leaks. There are chances for window leaks also so it’s good to inspect it.

Gas leak detector for boats

Carbon monoxide is the dangerous gas which must be guarded against the living spaces of your boat. So you’ve to place a quality smoke detector in all sleeping areas, CO is emitted from gasoline generators, propulsion engines, or heating equipment that burn fuel. 

Here a pilot gas monitoring system is used, so you need not get panic if leaks are detected on your boat.

To escape from leaks use the CO detector as it not only detects the CO but also other gas leakages and alerts you.

Wrapping Up

While all our products featured are reliable in the list, the UEi Test Instruments Combustible Gas Leak Detector is our Top pick. It comes with a clear digital display that shows the level of CO and other combustible gases the device is sensing all times. Check out our reviews and choose what suits you!!!

About Kim Goodwin

Kim Goodwin holds a Master's in thermal engineering from the University of Rhode Island. At Thermo Gears, she reviews most equipment that uses thermal imaging technologies.

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