8 Best Gas Leaks Detectors in 2023 – Reviewed & Buying Guide

At home or in the company we all have appliances that emit various types of gas. To be sure not to take risks, it is necessary to have a detector that gives an alarm if the concentration of these gases exceeds a certain threshold.

The price you pay to choose a good gas detector is always a second parameter to consider. It is good to know what to expect from these devices and understand what performance they can offer to respond well to the needs of the place where they are installed.

This guide helps you compare the aspects that characterize the various models on the market to facilitate the identification of the ideal detector. Here we will be listing the top 8 best gas leaks detectors.

TopTes PT199 Natural Gas Leak Detector with...
  • 【Combustible Gas Leak Detector】The TopTes PT199 is suitable for LPG, methane, ethane, propane, butane, natural gas, coal gas, gas fuel, liquefied natural gas, etc., and it will exactly pinpoint a leak, reducing the risk of gas explosion and keeping your family and property safe
  • 【Visual & Audio Gas Alarm】The gas detector employs both visual alarm and audible alarm as fast as 0.5 seconds of detection. When the bar graph increases and the detector beeps, you know gas has been detected. The alarm increases with the amount of gas, and the LCD screen will turn red when the gas concentration is high
  • 【Batteries Included & Easy to Use】The TopTes PT199 comes with 2x AAA Alkaline Batteries, so you will be able to set the detector up and have it ready as soon as you receive it. The system warm-up time is about 30 seconds. The low battery indicator will engage when battery voltage is below 2.4V. Automatic power off after 5 minutes without operation or gas detection
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Natural Gas Detector, TopTes PT520A Gas Leak...
  • 【Effective Gas Leak Detector】TOPTES PT520A natural gas detector can accurately help you locate the gas leakage of various combustible gases in tight spaces, such as methane, natural gas, propane, LPG, gasoline, etc. *Note: Please allow 30 seconds of warm-up time before the operation
  • 【Flexible Probe Easy to Use】With a 17-inch flexible gooseneck( bendable in any direction), the portable gas leak detector makes it easy for you to access hard-to-reach areas, such as natural gas pipelines, propane storage tanks, gas fireplaces, sewers, basement, RV, and other narrow space. It can be carried anywhere to find leaks no matter outdoors or indoors
  • 【Visual & Audible Alarm】 PT520A will rapidly respond in 0.5 seconds while gas is detected. Seven colored analog bars and a 75dB audible buzzer help you point out the gas leak location. Both of them increase with combustible gas concentration. Detection range: 50 to 10,000 ppm (*based on Methane)
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Techamor Y401 Natural Gas Detector, Home Gas Alarm...
  • [Multiple Gases Detection] The Natural gas detector is suitable for 24 hours gas leak monitoring of LNG, LPG (propane), methane, natural gas, coal gas at your kitchen, camper, stove, furnace, water heater, washing machine for home, department restaurant, hotel etc.
  • [Easy to Install] Techamor home gas alarm adapts excellent industrial design and leaves 2nd outlet uninterrupted for other devices. Just plug in, and ready for monitoring potential gas leak risky after warm up process.
  • [LED Digital Display & Warning] The natural gas detector quickly and accurately detects gas leak to give you the earliest possible warning of gas leak with 85 dB alarm and rapid flashing LED indicator
Natural Gas Detector, TopTes PT177 Gas Leak...
  • 【Combustible Gas Leak Detector】 TOPTES PT177 is a useful little tool that helps every household who has gas appliances to quickly and easily pinpoint leakage of combustible gas including LPG, methane, ethane, propane, butane, natural gas, coal gas, gas fuel, liquefied natural gas, etc. It will save a ton of time and potentially reduce energy bills
  • 【Easy to Use, Visual & Audible Alarm】 All you have to do is load the provided batteries, let PT177 gas detector finish its 30-second automatic calibration process, and then point near where you suspect the leak to be (hold it a couple of centimeters away). PT177 detects gasses and alarms almost immediately within 0.5 to 3 seconds. Five red LEDs (visual) and 75dB audible alerts that increase with gas concentration
  • 【Compact Design】 Pocket-sized with a pocket clip that allows you to carry it in your shirt pocket. The included storage bag makes the natural gas detector easy to store. It is an excellent tool for RV-ers, DIY-ers, homeowners with gas appliances, etc. It's very convenient and perfect for regular safety checks
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GasKnight Natural Gas Detector and Propane...
  • ✅ 𝗣𝗥𝗢𝗧𝗘𝗖𝗧 𝗬𝗢𝗨𝗥 𝗙𝗔𝗠𝗜𝗟𝗬! - Be worry free and know you did everything to keep your family safe from fires or explosions caused by dangerous gas leaks from your stove, furnace, water heater, washing machine, fireplace, kitchen, garage or grill.
  • ✅ 𝗦𝗔𝗩𝗘 𝗬𝗢𝗨𝗥 𝗧𝗜𝗠𝗘- Plug and Play! Don't waste your precious, limited free time with complex installations and never change a battery! Just plug in and get on with your day!
  • ✅ 𝗦𝗧𝗔𝗬 𝗦𝗧𝗬𝗟𝗜𝗦𝗛 - No tacky cord! Don't drill holes in your wall! This sleek and modern white natural gas alarm is wireless and will complement the style of your home or camper without detracting from your interior design.
LAMZ Natural Gas Leak Detector - Pen-Type Portable...
  • 【Combustible Gas Leak Detector】Detect multiple harmful combustible gases accurately, such as methane, propane, natural gas, and more, with a detection range of 50 to 1000 ppm.
  • 【Audible & Visual Alarms】 With both audible (75dB) and visual alarms, this detector can detect gas concentrations as low as 50 ppm* and help you quickly locate the source of the leak.
  • 【Easy to Use】 Wait for 30s for the detector to preheated after inserting the batteries, then hold it near the suspected gas leak. The detector will provide almost instant feedback and automatically turn off after 5 min of inactivity.
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Klein Tools ET120 Gas Leak Detector, Combustible...
  • Detection range: Approximately 50 to 10,000 ppm* (*based on Methane)
  • Two levels of sensitivity: High (approximately 50 to 1000 ppm) and Low (approximately 1000 to 10,000 ppm)
  • Five red LED's (visual) and 85dB audible alerts that increase with gas concentration
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Inficon AST100FG Forming Gas Leak Detector
  • Forming Gas and Combustible Gas Leak Detector
  • Intrinsically safe
  • Detects: Hydrogen forming gas, Gasoline, Natural gas, Propane, Butane and more

Best Gas Leaks Detectors Buying Guide

From the price comparison, little is deduced of the functionality of a gas detector. Especially for appliances intended for domestic use, these are low-cost items. The models that you find in the ranking stand out on the excellent performance confirmed by users who have tested them daily, but also for the often meagre cost.

The Gases Detected

What you need to pay attention to is the type of gas that the appliance can detect. The technical functioning at the base of the detector, a physical process often much more complex to explain than not to be used, can identify only specific types of gas and not all “dangerous” ones.

Specific detectors exist to identify an alarming concentration of carbon monoxide. This gas is released during combustion: for example, when using wood or embers to heat an environment without providing the correct exchange of air, the combustion that releases CO ends up replacing oxygen and becoming deadly.

There are several devices capable of detecting gas leaks from the pipes. In these cases, the sensor can recognize the type of concentration of rarefied or liquefied gases such as methane, propane or butane.

watch the video guide of buying best gas detectors.

They are the ones most frequently used in the home to power the water heating system or for cooking. An escape of these substances must be detected before it becomes dangerous, and the devices are often able to signal also in what concentration they recognize the danger.

Operation Reporting System

The review of the models highlights a fundamental aspect, i.e. the ability of the device to also report its operating status. It is essential to be able to count on a device that is always operational and capable of warning even of a sudden shutdown.

As a rule, different coloured LED lights are responsible for reporting various information, including the correct functioning of the device or the exhaustion of the battery, in the case of models not powered directly by the power supply.

Correct Installation

The best brand of gas leak detectors provides precise indications on how to install the appliances. For each safety device, the correct positioning constitutes the difference between a reliable detection or not.

The liquefied gas is heavier than air and therefore will tend to settle towards the ground, the right position for this type of detection is between 50 and 20 cm above the floor. Gases such as methane are lighter than air and therefore tend to rise upwards, in that case, 20/50 cm from the ceiling.

Who installs the device knows what type of leak to monitor and then invests the detector in the right place. The distance from air vents or ventilation points is also essential because it will not be in these areas of the house that the highest concentration of any dispersion will occur.


The first thing the user looks for in an appliance like that to detect the presence of gas and other toxic substances is reliability.

Well, those who bought Beghelli’s Senti Gad Duo have received confirmation that it works really and quickly. Don’t worry, it’s not that everyone suddenly had a gas leak; much more simply they performed a simple test suggested by the manufacturer.

The test as mentioned above, consists in placing a lighter near the detector and letting out a little gas. Even if the amount of gas is minimal, it is sufficient to trigger the alarm. This simple test immediately convinced users of the goodness of the tool.

In addition to LPG gas, the detector recognizes methane and carbon monoxide. The latter is a ruthless killer who kills in his sleep without the poor victim realizing what is happening.

Easy to Install

Another undeniable strength in addition to its effectiveness in detecting threats of gas and monoxide is the ease with which the detector is mounted. It is not necessary to resort to a specialized technician: fix it to a wall respecting the minimum measures that you find explained on the instructions and insert the plug into the socket.

Once this is done there is only the lighter test we mentioned in the previous paragraph to test that everything works correctly.

In the event of a threat, there is a clearly audible acoustic signal. If that is not enough, there is also a visual indicator: if the LEDs are green, everything is normal. The red colour, on the other hand, indicates the presence of gas in the air while in the event of a malfunction of the detector, a yellow light turns on.

A Little Dated

Although still on the market we have to say that this detector is a bit dated, let’s say it dates back to the early 2000s. Hence, it is not really the latest technological innovation in the sector. Still, as mentioned, it works very well.

That this is not a very recent production device is also evident from the dimensions which, according to some, are too generous.

In short, it is cumbersome. Another small complaint to be made concerns the instructions which are rather synthetic. However, we must still say that the use of the detector is straightforward.

We are satisfied with the build quality. You can immediately see that the detector is reliable and made with suitable materials, worthy of the Beghelli tradition.

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