Best Gas Leak Detectors Guide & Reviews of 2021

Unless they’re living totally off the grid, homeowners and businesses need to consider gas detection. Gases like carbon monoxide and radon can leak into the air and put everyone at risk. Fortunately, a simple gas sniffer device can help with pinpointing these threats. This review of the best gas leak detectors will highlight 2021’s top options for residential and commercial clients.

Emily Brooks - Editorial Staff

Updated: April 14, 2021

What We Did to Find the Best

To find the best gas leak detector, it was important to look at a variety of options. This is particularly crucial because some properties rely on natural gases, while others have alternative combustible products. Either way, leaks are always a possibility, so we had to consider all kinds of gas sniffers. Below are the top qualities we considered for each option.

  • Features

    0-10

    monitoring period, 24/7 alerts, disaster protection etc.

  • Support

    0-10

    telephone, email, chat, and other channels

  • Price

    0-10

    monthly fee, money-back, trial period

  • Ease of Use

    0-10

    installation, maintenance, service support

  • Trust Score

    0-10

    BBB.org and Trustpilot (positive, negative reviews)

We assigned each metric a grade between zero and 10, then rounded up the average scores to find the top choices. We spent hours poring over reviews and client feedback, so consumers don’t have to waste time or money finding the most suitable gas leak detector for their needs.

1. UEi Test Instruments Combustible Gas Leak Detector: All-Around Favorite

Total Score 9.6/10

UEi Main
UEi How it Woks
UEi Features
  • Features10/10
  • Equipment10/10
  • Price8.0/10
  • Ease Of Use10/10
  • Trust Score10/10

Starting Price

$145.72

Visit Website
BBB Rating A+
Best for Overall Value

DIY instal

YES

Trial Period

Prorated

This is one of the top gas leak detectors for its overall value. It can sound the alert on the presence of butane, benzene, natural gas, and propane.

It also detects ammonia, gasoline, lacquer, refrigerants, and thinners. Plus, the highly-sensitive sensor and 18-inch probe make it simple to test hard-to-reach areas.

Pros:

  • 18" probe
  • Audio and visual cues
  • Detects over a dozen fumes
  • Headphone jack
  • Minimum sensitivity of 50 ppm
  • Protective cover
  • Tip light

Cons:

  • Doesn't detect CO2
  • No auto-calibration
  • Expensive

This model has a lot going for it, but there is a downside. There’s no auto-calibration feature, but setting it up is quite simple. There’s also a headphone jack that makes it more convenient for individuals to test for leakage without disrupting their family members.

All-in-all, it’s a lightweight, handheld device that will come in handy for anyone.


2. SGILE Portable Gas Detector: Top Budget Pick

Total Score 9.5/10

SGILE Main
SGILE How it Woks
SGILE Warning
  • Features10/10
  • Equipment9.5/10
  • Price10/10
  • Ease Of Use8.0/10
  • Trust Score10/10

Starting Price

$23.99

Visit Website
Best for Budgets

DIY instal

YES

Trial Period

30 days

This accessory is a good example of being small but mighty. It’s also the best gas leak detector for those who are on a budget. The device is compact, super-light, and comes with a flexible 12″ probe.

It’s the perfect flexibility to get into tight spaces without fear of breaking or damaging the gadget. This SGILE product also has adjustable sensitivity with a minimum ppm of 50.

Pros:

  • 10-second detect
  • Adjustable sensitivity
  • Affordability
  • Audio and visual alerts
  • Compact design
  • Flexible probe
  • Low battery light

Cons:

  • Batteries not included
  • Doesn't detect CO2

The audio and visual alerts make it impossible to miss any detections. That said, it would be nice if there were a headphone jack so as not to disturb others. Also, the product takes a good 30 seconds to boot up, which can be annoying.

To make up for that, it detects within 10 seconds and can also point out any halogenated hydrocarbons that may be present.


3. EG Air Home Propane Natural Gas Detector: Simple Set-Up

Total Score 9.3/10

EG Main
EG Safe
EG How it Woks
  • Features9.5/10
  • Equipment9.0/10
  • Price10/10
  • Ease Of Use9.0/10
  • Trust Score9.0/10

Starting Price

$29.99

Visit Website
Best for Simple Placement

DIY instal

YES

Trial Period

30 days

The EG Air mounted gas leak detector is a compact solution that can fit into just about any room or property. It comes with a six-foot AC cord to make placing it simple and fast.

This device shows the exact concentration percentages for things like petroleum gas, toluene, methane, and more. With a minimum ppm of 50, it gives clients proper LEL (lower explosive limit) within seconds.

Pros:

  • 80dB siren
  • 50 ppm minimum
  • Audio and visual aids
  • Exact concentration percentages
  • Great price
  • Simple placement
  • Warranty

Cons:

  • No battery backup
  • Doesn't detect CO2
  • Shorter detected gases list than others

This model also has an 80-decibel siren, making it the best gas leak detector with audio and visual alerts. The device notifies customers at 5% LEL or higher and has convenient indicator lights.

There’s no battery backup, but the price is right, and it comes with a two-year warranty. This gadget is made of high-quality plastic that’s resistant to rust, corrosion, and pests.


4. Ridgid 36163 Model Micro CD-100 Gas Leak Detector: Three Alert Options

Total Score 9.2/10

Ridrig Main
RIDGID micro CD-100
RIDGID Tools About Us
  • Features9.0/10
  • Equipment9.0/10
  • Price9.0/10
  • Ease Of Use10/10
  • Trust Score9.0/10

Starting Price

$138.99

Visit Website
BBB Rating A+
Best for Loud Alerts

DIY instal

YES

Trial Period

30 days

This top choice from RIDGID is sleek, simple to transport, and has an efficient and ergonomic design. This makes it a breeze to take it to different rooms in the house.

Plus, the 16″ flexible probe is perfect for getting into corners and tight spaces. The device is battery-powered, and batteries are included.

Pros:

  • 16" flexible probe
  • 40 ppm minimum sensitivity
  • 85dB siren
  • Auto-calibration
  • Audio/visual/vibration alerts
  • Detects several natural gases
  • Three-mode function

Cons:

  • A bit heavier than others
  • Doesn't detect CO2
  • Pricey

The coolest thing about this model is its three-mode function. People can choose between audio, visual, and vibration alerts. The gadget also has an 85-decibel siren, so there’s no missing it.

The product has a minimum sensitivity of 40 ppm and applies to flammable gases, ammonia, and more. It auto-calibrates upon turning on.


5. Techamor Y201 Gas Leak Detector: Faster Response, Longer Charge

Total Score 9.0/10

Techamor Y201 Main
Techamor Y201 How it Woks
Techamor Y201 Portable
  • Features9.0/10
  • Equipment9.0/10
  • Price10/10
  • Ease Of Use9.0/10
  • Trust Score8.0/10

Starting Price

$32.99

Visit Website
Best for Response Time

DIY instal

YES

Trial Period

30 days

The Techamor Y201 is lightweight for a simple handheld design. It comes with a 12″ probe that can creep into tight spaces and detect gasoline, butane, methane, and more.

It has a minimum ppm of 50, which is on par with competitors.

Pros:

  • 85dB siren
  • Adjustable sensitivity
  • Affordability
  • Carrying case
  • LEL range of 10% to 40%
  • Low battery indicator
  • Slim and transportable

Cons:

  • No battery backup
  • Doesn't detect CO2
  • Shorter probe than others

That said, it has lots of stand-out features. This includes an 85-decibel siren, two-second response time, and a long charge. Batteries aren’t included, but the slim device can stay powered up for about eight continuous hours.

There’s also a low battery indicator light. This accessory comes with a carrying case to preserve its longevity.


6. Amprobe GSD600 Gas Leak Detector: Quick Monitoring, But High Price

Total Score 9.0/10

Amprobe Main
Amprobe How it Woks
Amprobe Box
  • Features9.0/10
  • Equipment8.5/10
  • Price9.0/10
  • Ease Of Use10/10
  • Trust Score8.5/10

Starting Price

$149

Visit Website
Best for Quiet Monitoring

DIY instal

YES

Trial Period

30 days

This Amprobe model is ideal for those who want fast response times and simple monitoring. The downside is that it will come at a steep price.

For those who can afford it, this product will boast 10-second response times and high sensitivity to methane and propane. It auto-calibrates, too, and will automatically power down after prolonged disuse.

Pros:

  • 10-second response time
  • 17.6" probe
  • Auto-calibration
  • Headphone jack
  • Low battery light
  • Quiet
  • Super lightweight

Cons:

  • Detects fewer gases than others
  • Expensive
  • Longer warm-up time

While the automatic calibration is great, it does take about a minute to warm up. The LED display is super convenient and shows visual alerts, ppm, and low battery indication.

There are audio alerts as well, and clients can use the headphone jack to keep things quiet. This super lightweight gadget comes with a cozy carrying case to keep it safe.


7. Signstek Refrigerant Gas Leakage Detector: Monitor CFCs, HCFCs, and HFCs

Total Score 8.9/10

Signstek Main
Signstek How it Woks
Signstek Features
  • Features9.0/10
  • Equipment9.0/10
  • Price10/10
  • Ease Of Use8.0/10
  • Trust Score8.5/10

Starting Price

$39.99

Visit Website
Best for Refrigerant Sensor

DIY instal

YES

Trial Period

30 days

Signstek has the best gas leak detector for refrigerants, including CFCs, HCFCs, and HFCs. It’s compact and dependable and comes at a great price, making it more accessible to people.

The clear LED display flashes six different leak alerts as well as indicator lights for low battery. The package comes with two C batteries.

Pros:

  • 14" probe
  • Clear LED display
  • Good price
  • Instant reaction time
  • Sensitive to refrigerants
  • Two-second reset time
  • Warms up in less than 10 seconds

Cons:

  • Doesn't detect CO2
  • Small display
  • The body feels a bit flimsy

At just over one pound, this is a great gas leak detector to have on hand. The 14″ probe is flexible yet stable, although the body feels a bit flimsy. A spare sensing tip is included.

The Amprobe warms up in less than 10 seconds, and boasts instant reaction times. It takes two seconds to reset and there’s also a mute button.


8. General Tools PNG200A Gas Leak Detector Pen: Easiest Natural Diffusion Sensor

Total Score 8.9/10

General Tools Main
General Tools How It Works
General Tools PNG200A
  • Features8.5/10
  • Equipment9.0/10
  • Price10/10
  • Ease Of Use8.0/10
  • Trust Score9.0/10

Starting Price

$37.06

Visit Website
Best for Natural Diffusion

DIY instal

YES

Trial Period

30 days

General Tools’ PNG200A model is a sleek and discreet pen design that’s great for indoor and outdoor use. It features a tri-color LED light display.

Green indicates that the device is on; yellow falls within the 200 ppm range, and red is in the 500 ppm window. It also comes pre-calibrated, so it’s ready right out of the box.

Pros:

  • Automatic reset
  • Fast response time
  • LED tri-color display
  • Low power consumption
  • Natural diffusion
  • Pre-calibrated
  • Sleek design

Cons:

  • Doesn't detect CO2
  • Lower sensitivity than others
  • Rigid probe

The audio and visual alerts will ensure that no detection goes unnoticed. Plus, the automatic reset does a good job of recalibrating itself. Even though the probe is quite rigid, the response times are great.

This natural diffusion sensor covers an LEL (lower explosive limit) range of 10% to 50%, but the sensitivity isn’t as good as competitors. That said, the low power consumption helps it maintain a longer life.


9. Corentium Home Radon Detector: DIY At-Home Monitoring

Total Score 8.8/10

Airthings Corentium Main
Airthings Corentium Radon Features
Airthings Corentium Radon Specification
  • Features10/10
  • Equipment8.5/10
  • Price8.0/10
  • Ease Of Use8.0/10
  • Trust Score9.5/10

Starting Price

$130.25

Visit Website
Best for Radon Readings

DIY instal

YES

Trial Period

30 days

This product may only work for radon, but it does a wonderful job of gathering daily data and compiling weekly insights for clients to read.

The convenient digital display helps clients quickly see reviews of the week’s average readings. The initial calibration takes a full day, but after that, things move much smoother.

Pros:

  • Beginner-friendly
  • Digital display
  • Lightweight
  • Long-term monitoring
  • Portable
  • Quick overview
  • Show average readings

Cons:

  • Expensive
  • Initial calibration takes a full day
  • Some customers report inconsistencies

The Corentium radon pen is flexible enough to fit into tight corners, floor-wall joints, cracks in the foundation, and more. It’s completely digital and powered by three AAA batteries, which are included. This makes it simple to transport, so customers can bring it along when they leave home.

The comparison data captures the long-term monitoring so families can have greater confidence in their safety. That said, even the Amazon price is quite high.


10. MTI Industries 30-442-P-WT Propane Gas Leak Detector Alarm: An On-the-Go Tool

Total Score 8.8/10

MTI Main
MTI Industries 30-442-P-WT
MTI Industries Products
  • Features8.0/10
  • Equipment8.0/10
  • Price9.5/10
  • Ease Of Use10/10
  • Trust Score8.5/10

Starting Price

$46.87

Visit Website
Best for Travel Readings

DIY instal

YES

Trial Period

30 days

This gas leak detector from MTI Industries is a great companion for people who regularly travel. More specifically, it’s ideal for campers, RVs, fifth-wheels, and the like. It simply mounts into the slot where the old propane detector was. This smart set-up makes it popular with the camping crowd.

Pros:

  • 85-decibel siren
  • Affordability
  • Great for travel
  • Ideal for campers
  • Mute button
  • No-fuss set-up
  • Rapid recovery sensor

Cons:

  • Not portable
  • Propane only
  • Reports of false alarms

The sensor will alert individuals when gas levels are greater than 25% LEL, or lower explosive limit. The 85-decibel siren is sure to wake them up, too. There is a mute button as well as a rapid recovery sensor, too. Even though this device only detects one gas, it’s a must-have for anyone who spends ample time away from home.


Best Gas Leak Detectors of 2021 (Pricing & Features)

This side-by-side table will make it easy to compare and contrast different gas sniffers. Check out the current pricing deals as well as what to expect from each of the products.

Provider Total Score Price Battery Backup Gases Detected Headphone Jack Min. Sensitivity Portable Alarm Sounds Weight Warranty Best For
UEi 9.6/10 $146 No butane, benzene, halon, methane, natural gas, propane, toluene Yes 50 ppm Yes Yes 15 oz. 1 yr Overall Value
SGILE 9.5/10 $24 No ethane, ketone, methane, propane, toluene No 50 ppm Yes Yes 8.8 oz. 1 yr Budgets
EG 9.3/10 $30 No butane, methane, natural gas, propane No 50 ppm No Yes 7.4 oz. 2 yrs Simple Placement
RIDGID 9.2/10 $139 No butane, ethanol, hydrogen, methane, propane No 40 ppm Yes Yes 1.2 lbs. 1 yr Loud Alerts
Techamor 9.0/10 $33 No ethanol, methane, propane No 50 ppm Yes Yes 8.8 oz. 1 yr Response Time
Amprobe 9.0/10 $149 No methane, propane No 35 ppm Yes Yes 1 lb. 1 yr Quiet Monitor
Signstek 8.9/10 $40 No CFCs, HCFCs, HFCs, bromine, chlorine, ethylene oxide, fluorine No 50 ppm Yes Yes 1.3 lbs. 1 yr Refrigerant Sensor
General Tools 8.9/10 $37 No butane, liquid petrol gas, methane, propane No 200 ppm Yes Yes 5.4 oz. 1 yr Natural Diffusion
Corentium 8.8/10 $130 No Radon No 1 pCi/L Yes Yes 1.6 oz. 1 yr Radon
MTI 8.8/10 $47 No Propane No 25% LEL No Yes 7.2 oz. 1 yr Travel

Types of Natural Gas Detectors

While the term ‘natural gas detector’ is used for most gas sniffers, not all of them are the same. One primary distinction is whether the tools are fixed or easily transportable. Here’s a closer look at what that means.

Another way to describe this type of gas leak detector is “mounted.” That’s because it sits on a mounting cradle in a fixed position at home, usually in the basement. They rely on battery power and are quite useful for industrial clients, too. When placing one of these products, ensure that it’s near appliances that emit gases. This will allow for earlier detection and the fastest response.

This type of natural gas detector is especially convenient because individuals can carry it around with them. These handheld devices rely on batteries and are commonly used by mechanics or technicians.

This way, they can go from room to room and monitor for leaks and potential dangers. Since they’re compact, they are great gadgets for homeowners, too, especially those who like to do DIY household projects.

How Gas Leak Detectors Work

Before deciding which item to try, it’s good to go over the basics of what this gadget does. As the name suggests, these handy appliances monitor the area for any gas that may be imperceptible to the human senses.

  • A lot of gas leak detector models have a visual display as well as detection sound alarms.
  • They check for signs of combustible, flammable, and toxic gas. These devices can also detect oxygen depletion through different sensors (electrochemical, infrared point, semiconductor, ultrasonic).
  • If gas is present, the visual display will show a reading of the sensitivity level, as well as emit an indicator sound.
  • For maximum efficiency, people should test the device from time to time.

Where to Install a Gas Detector

Next, clients should know where to install a gas leak detector. If it’s not in the right spot, then it may not perform properly and could pose a greater risk to the family.

Here are some helpful tips.

  • Place the gas leak detector in a room that contains a natural gas appliance, such as a stove. This may require multiple products to accommodate different rooms.
  • Affix it to a spot on the wall that’s about six inches from the ceiling but within 10 feet of the appliance. Try to keep it away from windows to avoid interference from airflow.

Features to Consider When Purchasing a Gas Leak Detector

It’s not enough to choose a gas leak detector at random. Rather, individuals should consider a few key factors to ensure that they’re purchasing something that will keep them safe and protected. It also helps to read feedback from customers on Amazon and other sites. Here are the top eight things to look out for when shopping around.

1. Auto-Calibration

This is a convenient feature that allows customers to start using their gas leak detector right away. They simply take it out of the package, turn it on, and the device sets itself right all by itself. An automatic calibration process also removes the risk of human error during set-up.

2. Alarms

Just about every gas leak detector has some kind of alert sound that makes it easy to distinguish between safety and gas detection. Those who are deaf or hard of hearing will want to get a device with flashing lights, too.

3. Indicator Light

Speaking of which, a flashing indicator light will make it clear that something is amiss. When it's combined with an audible alert, families are sure to notice even if they're in a different room. Try to find a product that also has light-up battery indicators that signal when it's time to switch them out.

4. Fixed or Handheld

Think back to the descriptions of fixed and handheld devices. Both have their strengths, so it's often a matter of preference for homeowners since they don't need it for their jobs. Larger houses may want a transportable one to avoid the expense of putting a mounted one in multiple rooms.

5. Gas Type

Depending on the model and the price, a gas leak detector may protect against one or two combustible gases, or it may provide more comprehensive coverage. Clients should know which gases their appliances use so that they know what kind of leakage the property is susceptible to.

6. Probe Flexibility/Length

Fortunately, most of these gadgets adhere to standard flexibility and length requirements. That said, if choosing one that isn't on this list, be sure to check for these measurements. It will impact how effective and far-reaching the device is.

7. Sensitivity

The measurement of sensitivity is another industry standard and tends to be 50 to 70 ppm (parts per million). For reference, most people don't experience adverse side effects from 70 ppm of carbon monoxide. However, sensitive populations or heart patients could fall ill within that range and may need higher sensitivity.

8. Visual Display

Most people appreciate visual aids, so they may like a gas leak detector that maps out the leak on a little screen. This makes it easy to see which gas is detected, how far away it is, and what the ppm is.

FAQs

  • How Long Does a Leak Detector Last?

    This depends on a few different things, so it will vary by household. For instance, if it’s a cheap device made of shoddy materials, don’t expect it to last too long. That aside, consider the placement of the accessory.

    If it is sitting in a dank basement or garage, then it could fall victim to environmental damage, especially if it’s cheap. Fortunately, the 2021 models in this review are standard quality and should last a few years.

  • Do All Gas Leak Detectors Detect Carbon Monoxide?

    The short answer is no. Different models and brands detect a wide range of things, but that doesn’t mean that carbon monoxide will be on the list. If this is important to families, then they should check the specifications of the product before they buy it. Also, remember that lots of properties have CO2 monitors already.

  • What Should I Do If I Find a Gas Leak In My Home?

    While a gas leak detector can set a person’s mind at ease, there’s always the possibility of facing actual leakage. If this happens, remain calm, but jump into action.

    • First, open the windows in the house, even if they’re in a different room than the device.
    • Get out and wait outside.
    • Call the local utility provider and inform them of the situation. They’ll send someone over.

  • Isn't There a Way to Check For Leaks Using Soap Bubbles?

    It might be hard to believe, but there’s a DIY experiment that uses soap and water to check for gas leakage.

    • Start with a quart of clean, room-temperature water.
    • Next, add about three tablespoons of dish detergent or a similar soap.
    • Put in two teaspoons of liquid glycerin to make the mixture last longer. This makes it easier to spot a leak.
    • If possible, leave the solution out overnight.
    • The next day, apply the mixture to the gas line connections in the house. If bubbles form, there’s quite possibly a leak.

  • How Do I Use a Handheld Gas Leak Detector?

    This type of gas leak detector makes checking for leakage quite easy. It’s just about as simple as taking it out of the box and turning it out.

    • If the accessory auto-calibrates, allow it to get itself in order.
    • After it is calibrated, stick the probe along all of the appliances’ gas line connections.
    • Wait for an audio or visual cue, such as a repetitive sound or a ppm reading on the display screen. This will reveal the presence or absence of gas.

  • What is the Difference Between Carbon Monoxide and Natural Gas?

    This is a great question and one that any homeowner should know.

    • Carbon monoxide is produced when combustible substances are burned. That includes things like clothes, paper, and wood.
    • Lots of natural gases contain carbon, particularly ethane, methane, and propane. That said, the term ‘natural gas’ simply refers to fuel that’s present in appliances like ovens and furnaces, whether they contain carbon or not.

Every House or Workplace Should Have a Gas Leak Detector

This kind of accessory isn’t a mere suggestion or something nice to have. Rather, most technicians and experts recommend either a fixed or handheld gas leak detector for all kinds of properties.

Not only does it add more peace of mind and confidence, but it could save lives. Most places have at least one combustible gas present, although it’s usually in an oven or furnace. That said, even the safest environments are at risk of leakage or damage, so better to be safe than sorry.


Editorial Staff

As a journalist, Emily draws on her rich experience in home safety and seeks to research more on the topic. She is truly passionate about her interests. Emily is knowledgeable about security systems due to the in-depth studies that she has conducted for Securing Home.


Comments