How to Choose the Best Gas Leak Detector: A Comprehensive Guide to Natural Gas, Propane, and Methane Detection

It’s typical to worry about gas leaks, whether moving into a new house, owning an old home, or just having gas appliances. However, these gasses are extremely difficult for most homeowners to detect.

Luckily, many affordable and effective gas leak detectors are on the market. Read on to learn about gas leak detectors, including top picks and importance.

Best Gas Leak Detector Overall

Kidde Nighthawk Gas Detector

Best Versatile Gas Leak Detector

First Alert GCO1CN Combo Detector

Best Gas Leak Detector for HVAC Professionals

Klein Tools ET120 Gas Leak Detector

Best Smart Radon Gas Leak Detector

Airthings 2950 Wave Radon

Best Radon Gas Detector

SafetySiren Pro4

Top Gas Leak Detectors on the Market

These are the best gas leak detectors you can find. Take a look at each one before deciding which one you want to install in your home.

Best gas leak detector overall: Kidde Nighthawk Gas Detector

The Nighthawk Gas Detector features automatic calibration, adjustable sensitivity levels, a reliable detection range, and a sturdy body to ensure durability and efficiency.

Best versatile gas leak detector: First Alert GCO1CN Combo Explosive Gas and Carbon Monoxide Detector

The First Alert GCO1CN Combo Explosive Gas and Carbon Monoxide Detector is the best detector to monitor various gasses in your space, including toxins like carbon monoxide and combustibles like propane and propane methane. Also, the device has a plug-in with battery backup, ensuring you always monitor gas levels in your space.

Best gas leak detector for HVAC professionals: Klein Tools ET120 Gas Leak Detector

The ET120 is a reliable tester that detects methane, propane, and other flammable gasses at concentrations as low as 50 ppm and delivers audio and visual alerts. Besides its efficiency, the detector is portable and durable, making it an excellent choice for HVAC professionals.

Best smart radon gas leak detector: Airthings 2950 Wave Radon

The Airthings 2950 Wave Radon features Smartlink functionality, which allows you to connect your detector to the Airthings Hub and access detailed data on the radon gas levels at the convenience of your smart device.

Best radon gas detector: SafetySiren Pro4

If you’re worried about your home’s radon gas levels, we recommend the SafetySiren Pro4 Series. This detector offers continuous radon gas monitoring and an easy to read digital display.

Best Gas Leak Detectors: Expert Reviews for a Secure and Protected Home

Want to know more in depth information before you buy? We’ve got you covered.

1. Kidde Nighthawk Propane, Natural & Explosive Gas Detector

Kidde Nighthawk

The Kidde Nighthawk Gas Detector can top any best gas leak detector compilation. Unlike most detectors in the market, the Kidde Nighthawk does double duty, detecting combustible gas and carbon monoxide leaks.

This gas detector stands out for its convenience and versatility. An in-built extension cord makes it easy to install, allowing you to connect the device to a low-voltage outlet while simultaneously mounting it higher, where natural gas leaks are more prevalent.

Besides the AC adapter, this gas leak detector has a 9V battery, allowing you to choose where to place it. However, we recommend leaving it plugged in because the battery is short-lived and serves as a reserve if the power goes out.

Pros

Cons

Product Specs:

Gases Detected	Dimensions	Weight	Color	Power Source	Battery Type
Methane, Propane, and Carbon Monoxide	2 x 8 x 11 inches	1 lb	White	Plug-In with Battery Backup	9V Alkaline

2. FIRST ALERT Combo for Explosive Gas and CO

First Alert GCO1CN

Another top-ranking pick on our list is First Alert GCO1CN Combo Explosive Gas and Carbon Monoxide Detector, also designed to detect natural gas leaks and carbon monoxide.

This device plugs into any power outlet and has a 9-volt battery backup to keep it running even when the power goes out. Nonetheless, you should check the battery periodically because it can drain fast.

The detector is equipped with a backlit digital display to show the gas levels in your interior space in parts per million (ppm), saving you the hassle of monitoring these gasses.

Finally, this gas detector comes with a silence/test button that allows you to test the alarm’s operation or mute it in case of a false alarm. The button also helps you verify whether the detector is accurate and is working properly.

Pros

Cons

Product Specs:

Gases Detected	Dimensions	Weight	Color	Power Source	Battery Type
Methane, Propane, and Carbon Monoxide	7.25 x 4.25 x 9.06 inches	13.7 ounces	Gray/White	Plug-In with Battery Backup	‎2 x AA batteries

3.TopTes PT199 Gas Leak Detector: Portable, Audible & Visual Alarm for Home Safety

TopTes PT199

The TopTes PT199 Gas Leak Detector is a portable gadget that can identify the presence of flammable gasses in your home or office, such as methane and propane. This detector has audio and visible alerts to warn you of a gas leak. The gadget is sensitive enough to identify gas leakage even in low quantities.

This detector comes in a pocket-size design with a pen hook that allows you the convenience of carrying it around your home. Also, the TopTes PT199 Gas Leak Detector features a non-slip texture and material that makes it easy to hold.

Another highlight we like about this gas detector is its bright orange color. While it may seem like just an aesthetic feature, it improves the device’s visibility in times of emergency.

Pros

Cons

Product Specs:

Gases Detected	Dimensions	Weight	Color	Power Source	Battery Type
Methane (Natural Gas), Propane, Fuel, Ethane, Butane, Alcohol, Coal Gas, Gasoline, Toluene, Kerosene, Sewer Gas	6.5 x 0.79 x 0.79 inches	0.13 lb	Orange	Battery-powered	‎2 x AAA batteries

4. GasKnight: Home Safety Monitor for Natural Gas, Propane & Explosive Gases

The GasKnight

If you want a relatively cost-effective gas leak detector, consider getting the Natural Gas Detector and Propane Detector. This plug-in gas leak sensor is designed to monitor and detect any gas leaks in your space, including natural gas and propane.

This detector is easy to install – you need to plug it into a power outlet, and you’re ready to go! So, you can skip the complex installation and changing battery hassles typical in most gas leak detectors. Besides, the device has a free eBook to help install and maintain it and insightful tips on gas safety.

The gadget is sensitive enough to identify gas leaks even at low concentrations and has a self-testing mechanism to ensure proper operation. Also, the device has a low power consumption rate, so it will not significantly impact your energy bills.

Pros

Cons

Product Specs:

Gases Detected	Dimensions	Weight	Color	Power Source	Battery Type
Methane, Propane, Butane and Ethane	3.4 x 3.2 x 1.2 inches	3 Ounces	White	Plug In	-

5. EG Y201 Detector: Portable Sniffer for Propane, Natural Gas & Combustible Leaks

EG Y201

If you want a hand-held compact gas detector small enough to fit your palm, the EG Y201 is a perfect fit! This cost-effective option is handy in detecting any gas leaks in your home. It comes with a sensor tip that detects the presence of combustible gas leaks in your space, including methane, sewer gas, LPG, and propane.

The EG Y201, like other gas leak sensors with probes, features a flexible 12-inch gooseneck for monitoring confined spaces. This flexibility and the device’s portable design enable you to monitor different hard-to-reach areas where gas leaks may occur in your house.

Also, this gas detector features adjustable sensitivity, enabling you to increase the sensitivity setting to detect small gas leaks. You can alternatively reduce the sensitivity setting on the EG Y201 to detect bigger explosive gas leaks, which filters out false alarms triggered by background gas levels.

Pros

Cons

Product Specs:

Gases Detected	Dimensions	Weight	Color	Power Source	Battery Type
Methane (Natural Gas), Propane, Fuel, Ethane, Butane, Alcohol, Coal Gas, Gasoline, Toluene, Kerosene, Sewer Gas	5.9 x 2.7 x 1 inches	8.8 ounces	Yellow	Battery Powered	3 x AAA batteries

6. Klein Tools ET120: Gas Leak Detector with 18" Gooseneck & Wide Detection Range

Klein Tools ET120

The ET120 Gas Leak Detector is a portable device that detects gas leaks in various applications, such as HVAC systems, gas pipelines, and appliances. This device has a semiconductor sensor that can identify gas leaks fast and precisely by detecting the quantity of methane, propane, and other flammable gasses in the air.

Also, the detector includes an 18-inch flexible gooseneck probe that can reach into small spaces and an integrated LED light to assist users in locating leaks in dimly lit regions. Its over-molded body finish gives the gas leak detector a comfortable grip, ideal for a portable device.

The device comes with two sensitivity levels, High and Low, allowing you to adjust it to your needs. The high sensitivity level is effective in detecting the presence of very low combustible gas concentrations, keeping you and your property safe.

Pros

Cons

Product Specs:

Gases Detected	Dimensions	Weight	Color	Power Source	Battery Type
Methane (Natural Gas), Propane and other combustible gases at concentrations as low as 50 ppm	28.3 x 1.79 x 2.71 inches	13 Ounces	Black/Orange	Battery Powered	4 x AAA batteries

7. RIDGID 36163: Micro CD-100 Handheld Combustible Gas Leak Detector

RIDGID 36163

Another top handheld gas leak detector on our list is the Ridgid Micro CD-100. The gas leak detector stands out for its usable lifespan, boasting a rugged and ergonomic design that provides great durability and comfort.

This gas detector employs a sensitive semiconductor sensor on a 16-inch flex probe to detect gas leaks in confined spaces, including around fittings and valves. The device can sense a wide range of flammable gasses, including butane, methane, propane, ethanol, hydrogen, and gasoline vapors

Also, the Ridgid Micro CD-100 comes with tri-mode detection, offering a visual, vibration, and alarm alert in the presence of any gas leak in your space. This feature helps you jump the distractions of loud gas leak detector alarms by offering you two viable options. The vibration option is especially handy in noisy environments like worksites.

The convenience of this gas leak detector extends to its automatic calibration. The Ridgid Micro CD-100 calibrates automatically every time you power it on, ensuring accurate readings and eliminating the need for manual calibration.

Pros

Cons

Product Specs:

Gases Detected	Dimensions	Weight	Color	Power Source	Battery Type
Methane (Natural Gas), Hydrogen, Propane, Ethylene, Ethane, Hexane, Iso-Butane, Benzene, Ethanol, Acetaldehyde, Toluene, P-Xylene, Ammonia, Hydrogen Sulfide	10.2 x 2 x 4.7 inches	1.32 lb	Black/Red	Battery Powered	4 x AA alkaline batteries

8. SafetySiren Pro4 Series (4th Gen): Trusted Radon Detection, Made in the USA

SafetySiren Pro4 Series (4th Gen)

According to EPA estimates, radon exposure is the leading cause of lung cancer among non-smokers in the US. This natural-occurring radioactive gas can be a menace to your health, and you may want to acquire a radon gas detector if you suspect there are high levels of radon gas in your indoor space.

The SafetySiren Pro4 Series is the best option for measuring the level of radon gas in your home. This device is especially essential if you don’t have a radon mitigation system, providing accurate and reliable measurements of the gas levels, which can help you take action to minimize exposure to the gas.

The device employs sophisticated sensor technology to offer accurate radon level measurements with an error margin of less than 5%. Also, this detector provides continuous monitoring, allowing customers to watch radon fluctuations over time.

The Pro4 Series detector is very simple to operate. It has a basic digital display that gives clear and easy-to-read radon concentration measurements. The gadget also has an audible alarm to notify whenever radon levels surpass a safe level.

Pros

Cons

Product Specs:

Gases Detected	Dimensions	Weight	Color	Power Source	Battery Type
Radon Gas	4.5 x 3.5 x 1.5 inches	11.3 ounces	White	Plug In	-

9. Airthings 2950 Wave Radon: Smart Radon Gas Detector with Humidity, Temperature Sensor & Free App

Airthings 2950 Wave Radon

If you’re a technology geek, the Airthings 2950 Wave Radon is a well-recommended option for detecting an excessive concentration of radon gas in your interior environment. Although small, the circular radon detector comes packed with smarts to enhance convenience.

The gadget detects radon levels and continuously monitors indoor air quality using contemporary advanced sensors. The device links to your smartphone or tablet through Bluetooth, with the Airthings app allowing you to monitor radon levels in your interior environment and other data in real time.

What stands out for this radon gas detector is its capacity to display color-coded touch-free level indication, providing a quick glimpse of radon levels in your home. You only need to wave in front of your device for the ring light to glow green (healthy), yellow (warning), or red (dangerous), depending on your air quality levels.

Besides testing for radon levels, the Airthings 2950 Wave Radon also provides humidity and temperature information, helping you keep an optimal environment in your indoor spaces.

Pros

Cons

Product Specs:

Gases Detected	Dimensions	Weight	Color	Power Source	Battery Type
Radon Gas	4.7 x 4.7 x 1.4 inches	0.48 Pounds	White	Battery powered	2 AA alkaline batteries

Understanding Different Types of Gas Leak Detectors

Various types of gas leak detectors are categorized by functionality or operating mechanism. This section looks at the different types of gas leak detectors based on the detected gasses.

Natural Gas Detector

This device detects the presence of natural gas in the air. This flammable gas is a staple in most homes and businesses, commonly used for cooking and heating. However, should natural gas leak out of pipes or appliances and concentrate in an enclosed space, it can be dangerous, causing fire explosions or health complications when inhaled.

You can eliminate the potential hazards of natural gas leaks with a natural gas detector. Once the device detects the presence of natural gas in the air, it sounds an alarm (other variants include visual or virtual alerts) to alert you of any potential leaks.

Advantages

Timely detection
Enhanced Safety
Easy to use
Cost-effective

Disadvantages

False Alerts
Maintenance
Limited Coverage

Propane Detector

A propane detector is a gadget that senses the existence of propane gas in the air. If this highly flammable gas accumulates in a confined space, it can pose a health danger and the risk of a fire or explosion.

The propane detectors are usually installed in spaces where propane is widely utilized, such as RVs, boats, and homes, for cooking and heating. Typically, propane detectors come equipped with sensors capable of detecting propane gas at concentrations as low as 20 ppm.

Once the sensors detect propane in the air, they trigger an alarm to alert the space’s occupants to take appropriate safety actions. Some propane detectors feature digital screens that offer real-time measurements of propane gas levels in the air.

Advantages

Enhanced safety
Cost-effective
Convenient to install and use

Disadvantages

Limited detection range
False alarms

Methane Detector

Methane detectors are gadgets that detect the concentration of methane gas in interior spaces.

This colorless, odorless gas can cause significant danger if accumulated in a confined space. Methane detectors are widely utilized in various industrial situations, including oil and gas exploration, mining, and wastewater treatment facilities.

Methane detectors often include sensors capable of detecting methane gas at extremely low levels. When the sensor detects methane gas, an alarm is triggered, alerting the area’s occupants to leave and take appropriate safety actions.

Advantages

Enhanced safety
Efficient in detecting methane gas, sensing levels as low as 1 ppm.

Disadvantages

Limited range
Methane detectors can be costly, especially if numerous devices are required for a big space.

Things To Consider When Choosing a Gas Leak Detector

There are various factors to consider when selecting a gas leak detector to guarantee that you get the appropriate one for your needs. These are some considerations to consider:

1. Type of gas

Various gas sensors are designed to detect different gasses, including natural gas, propane, radon, and methane. Selecting a detector that can sense the gas you need to monitor is critical. Some devices detect more than one gas, which is a plus if you choose one.

2. Sensitivity

You also want to look at the sensitivity of the gas leak detectors when choosing your best fit. Consider getting a device that’s sensitive enough to detect the presence of gas at the concentration you need but not overly sensitive to avoid the disruption of a false alarm.

3. Detection range

The detection range is the distance at which the gas leak detector can detect the presence of gas in the air. This range varies with the model, so find a device with an appropriate detection range to ensure it can sense a gas leak from a safe distance, giving you enough chance to take essential safety precautions.

4. Response time

A gas leak detector’s response time is the time it takes to detect a gas leak and trigger an alert. To guarantee speedy detection and safe reaction, look for a detector with a quick response time.

5. Portability

Gas detectors are available in stationary and portable options. The device’s portability is important when choosing the best sensor for your needs. Portability is essential, as it facilitates easy mobility and flexibility in detecting leaks in various areas.

6. Calibration

Gas detectors require periodic calibration to ensure optimal functionality. When choosing a gas leak detector for your space, consider checking for its calibration requirement – how often it should be calibrated and the ease of calibration.

7. Smart home integration

If you own other smart home devices, find out if the gas leak detectors can interact with your network of smart home devices and enhance your home’s safety.

8. Price

Finally, all the considerations above are void if you don’t need the pricing. Look for a gas leak detector that matches your budget without sacrificing quality. Remember, a more costly gas detector with better features and greater accuracy may be worth every coin.

How Do Gas Leak Detectors Work?

Gas leak detectors work by detecting the presence of specific gasses in the air. Typically, these devices are equipped with sensors that come in various types, specially designed to detect the presence of certain gasses, including methane, natural gas, or propane.

Upon sensing the presence of gas in the air, the gas leak detector triggers a sound alarm or flashes a warning light. Some advanced devices feature a vibration alert, while others have a digital display indicating the detected gas’s concentration.

Different Types of Sensors Used in Gas Leak Detectors

There are various types of sensors used in gas leak detectors, such as:

Infrared sensors: These sensors work by sensing the infrared radiation released by gas molecules when activated by a heat source. They’re highly sensitive even to low gas levels and are commonly used in chemical plants and refineries.
Electrochemical sensors: The sensors are widely used to detect the presence of toxic gasses such as nitrogen dioxide and hydrogen sulfide. They sense the presence of gas in the air by measuring the shifts in electrical conductivity.
Semiconductor sensors: These sensors detect and measure changes in electrical conductivity when gas molecules come into contact with the sensor. Semiconductor sensors are effective in detecting the presence of combustible gasses such as propane and methane.
Catalytic sensors: Like semiconductor sensors, these sensors are highly effective in detecting the presence of combustible gasses. However, they employ a heated catalyst to detect the presence of gas. As gas molecules come into touch with the catalyst, they start a reaction that generates heat, which the sensor can detect.

Importance of Regular Maintenance and Testing

Gas leak detectors require frequent maintenance and testing to ensure optimum operation and accuracy in sensing gas leaks. Here are some of the reasons why routine maintenance and testing practices are critical:

Ensures accurate readings: Various environmental factors, such as temperature and humidity, can affect the accuracy of gas leak detectors. Frequent maintenance and testing will help discover any problems impacting the detector’s measurements and ensure it works properly.
Extends the detector’s lifespan: Frequent maintenance can assist in avoiding the accumulation of dust, grime, and other debris that can gather over time and affect the detector’s efficiency. Cleaning and servicing the sensor can extend its lifespan and ensure it remains effective for years.
Avoids false alerts: A lack of maintenance in gas leak detectors can trigger false alarms, which are inconvenient and potentially dangerous. Frequent maintenance and testing can help reduce false alarms and guarantee that the devil only warns you when there’s a genuine gas leak.

Where to Install Gas Leak Detectors

You should install gas detectors where leaks are likely to occur. This covers places with gas appliances or pipelines, such as near gas furnaces, stoves, water heaters, and dryers. Also consider installing a gas detector near gas meters and in any spots where gas lines enter your home.

Moreover, it is essential to install gas detectors in sleeping rooms, other interiors where people spend a lot of time, and in areas with inadequate ventilation or where gas leaks might go unnoticed. You can also read the specific installation instructions on the gas detector to get recommended insights.

Common Mistakes to Avoid When Installing Gas Leak Detectors

Various gas detector mistakes affect your device’s functionality and effectiveness. Here are some common installation mistakes you should avoid:

Installing detectors in the wrong areas: You should install your gas detectors in areas prone to leaks. When installed in the wrong location, they may fail to detect gas leaks and offer effective protection.
Placing the detector too close to gas appliances: Although having your sensors in areas with gas appliances is vital, avoid installing them too near, as they can trigger false alarms.
Installing the wrong type of detector: Having the wrong type of detector is as good as not having one at all. ensure the sensor you install is designed to detect the specific gas you seek to monitor.
No testing after installation: It’s critical to test a gas detector once installed to ensure it’s working properly. You can simulate a gas leak and ensure the detector sounds an alarm.

Guidelines for Installing Gas Leak Detectors in Commercial Buildings

When installing gas leak detectors in commercial buildings, it is essential to follow standard guidelines to ensure appropriate installation and efficiency. Here are some guidelines you should consider:

Assess the potential gas leak risks before installing detectors. It includes examining the type of gas used, the gas pipes and appliances’ condition, and other factors that can cause leaks.
Select the appropriate gas leak detector based on the assessment above.
Install the gas leak detectors in the right spaces where gas leaks are likely to occur, especially where people spend a lot of time.
Ensure you follow the manufacturer’s instructions when installing your detectors, including wiring and mounting requirements.
Maintain your gas detectors regularly to ensure optimal operation and accurate measurements. This includes changing batteries, regular calibration, and testing for accuracy.
Finally, train the staff in the commercial building about the significance of gas leak detectors and the steps to take in case of an alarm.

Tips for Preventing Gas Leaks in Your Home

Preventing gas leaks in your home is essential in ensuring the safety of your family and property. Here are some tips to help prevent leaks:

Have routine maintenance of your gas lines and appliances by a licensed professional. Such professionals can detect and correct any potential issues before they become leaks.
Install gas leak detectors around areas prone to leaks to alert you in case of leaks.
Be cautious while conducting DIY work with gas appliances or lines. Ensure you’ve got the necessary expertise and tools to avoid gas leaks.
Be careful with gas leak signs, such as the smell of gas, dead plants along gas lines, and a hissing sound. Should you notice the signs, evacuate the house immediately.
Have proper ventilation, especially when you use gas appliances, to mitigate gas accumulation in your home in case of leaks.

What to Do If You Detect a Gas Leak

Here is a detailed step-by-step guide on what to do when you detect a gas leak:

Evacuate the house: Should you suspect a gas leak, the first step is to evacuate the area immediately. Don’t turn off any appliances, as it can cause a spark that can ignite the gas.
Call emergence service: After evacuating to a safe outdoor location, call the emergency service or the local gas company to report the leak.
Don’t re-enter the house: Do not re-enter the building until it has been assessed and declared safe by a professional. Even if the gas leak has been contained, there may still be harmful gas remaining.
Follow the professionals’ instructions: When the emergency services or gas company personnel arrive, diligently follow their instructions and precautions to ensure you’re safe.

Importance of having an emergency plan in place

Having an emergency plan during gas leaks is critical since gas leaks can pose a serious threat to human health and safety. Below are some reasons why you need an emergency plan in place:

Quick action: Gas leaks may quickly become hazardous, so it is critical to respond swiftly in case of a gas leak. Having a plan ready for an emergency will help you respond promptly and reduce the possible harm caused by a gas leak.
Safety: Gas leaks can endanger human health and safety. An emergency plan helps keep you and your loved ones safe, guiding you on safe evacuation or seeking medical assistance.
Minimize damage: An emergency plan can help you limit the damage by guiding you on how to turn off the gas supply and other critical procedures to follow in the event of a gas leak.
Compliance: Depending on where you reside, you may be obligated by law to have an emergency plan for gas leaks. Compliance with these standards is critical for safety and to avoid any legal penalties.

Frequently Asked Questions about Gas Leak Detectors

Do you still have questions? We have answers! Read on to learn about some of the most frequently asked questions about gas leak detectors.

Do Gas Leak Detectors Require Professional Installation?

Most gas leak detectors are easy to install, and you can do it yourself. However, hard-wired detectors are designed to be wired directly to your home's electric system, so they may require professional installation.

Are There Any Government Regulations for Gas Leak Detectors?

Yes. There are government regulations for gas leak detectors to ensure they meet safety and performance requirements.

How Often Do I Need to Replace a Gas Leak Detector?

The lifespan of gas detectors varies depending on their type, manufacturer, and use. Typically, most gas detectors have a lifespan of 5 to 10 years.

Our methodology

The review and testing process for gas leak detectors entails evaluating them in controlled environments that replicate real-world situations, including varying gas concentrations and exposure durations. Our in-house experts assess the detectors for accuracy, reliability, sensitivity, and response time. Additionally, they take into account factors like ease of use, installation and maintenance.