Top 10 Best gas detectors in 2026

Last Updated - 6/19/2026

🏆Best Choice

Kidde

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

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•Easy Installation - simply plug-in to a standard, 120V outlet in your home
•9-volt battery backup provides protection during a power outage
•Digital LED display shows the level of carbon monoxide the CO alarm is sensing or states "GAS" when explosive gas is present
•85-decibel alarm announces when carbon monoxide or explosive gas is detected
•Peak Level Memory records the last time carbon monoxide was detected or when the unit was last tested

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$57.47

$68.97

-17%

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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

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•Combustible Gas Leak Detector: The TopTes PT199 detects natural gas, methane, propane, butane, LPG, and more, pinpointing leaks to reduce the risk of explosion, keeping your family and property safe
•Visual and Audio Gas Alarm: Visual and audio alarms trigger within 0.5 seconds of gas detection. The alarm intensifies with gas concentration, and the LCD screen turns red when gas levels are high
•Batteries Included and Easy to Use: The TopTes PT199 includes 2x AAA batteries and is ready after a 30-second warm-up. The low battery indicator activates below 2.4V, and it auto-powers off after 5 minutes without operation or gas detection
•Compact Design: Pocket-sized, non-slip, and easy to carry or store in the included bag. Ideal for RV owners, DIYers, and homeowners with gas appliances. Saves you from paying hundreds of dollars in diagnostics or wasting gas in an undetected leak
•What You Get: 1x PT199 Gas Leak Detector, 1x Storage Bag, 2x AAA Batteries, 1x User Manual. Detection range: 50-1,000 ppm (based on methane). Detection distance: 1-5cm

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$22.99

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Xalire

Xalire Gas Leak Detector, Natural Gas Alarm for Home & RV, Plug-in Propane Detector Monitor with Audible & Visual Alarm, AC 110V-240V, White Color

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•Versatile Gas Leak Detector for Home and RVs-This gas detector is ideal for detecting natural gas, propane, and other flammable gases in homes, motorcoaches, trailers, propane storage tanks, sewers, basements, and narrow spaces. A must-have for your safety needs.
•Detects Multiple Flammable Gases-The natural gas detector identifies methane, propane, LPG, LNG, butane, alcohol, coal gas, gasoline, sewer gas, and more. A reliable gas sniffer for home safety and RV protection.
•High Sensitivity with Real-Time LED Display-Features an advanced sensor that provides instant gas leak detection and displays the concentration level on the LED screen with an 85dB alarm for early warning.
•Visual and Audible Alarms-Equipped with a loud 85dB alarm and a bright LED display for precise gas concentration tracking. Stay alert to natural gas leaks with this gas alarm detector for home and RVs.
•This gas detector ensures dependable performance. Backed by a lifetime warranty for worry-free usage in your home, RV, or camper.

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$19.54

$22.99

-15%

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HSTMYFS

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

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•Versatile Gas Detection: This gas detector is designed for home use and can detect multiple combustible&explosive gases, including LPG (methane), CNG, LPG, Propane and Natural gas.
•Photoelectric Warning System: When the concentration of combustible gas reaches a preset level, the alarm emits an 85 dB audible and visual signal, alerting you to check for indoor gas leaks.
•Proven Safety: Our gas detector undergoes rigorous quality management, with over a decade of successful sales to verify its stability and reliability.
•Easy Installation: Installing the natural gas detector is a breeze. Simply plug it into an electrical outlet to start detecting gas leaks.
•Important Warm-Up Time: Please note that all gas detection devices require a 2-3 minute warm-up period before they become operational. Ensure the product is correctly started during this time.
•Please test the product before use. After the warm-up period is complete, perform a functionality test to ensure proper operation

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$19.99

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Firlarm

Firlarm Natural Gas Detector, Plug-in Gas Leak Detector for Home, Propane Leak Alarm for RV and Kitchen, with LED Digital Display

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•Multi-Gas Detection: Designed for home use, this device offers fast and reliable response, capable of detecting multiple combustible gases such as natural gas, propane, LPG, and LNG
•Real-Time Monitoring: 24/7 continuous surveillance. When gas concentration exceeds 3% LEL (Lower Explosive Limit), the device instantly triggers an 85 dB audible alarm with synchronized red flashing lights. The alarm intensity automatically adjusts in response to changing gas concentration levels
•Plug-and-Play: Features a standard US plug and supports 110V–220V AC for easy setup. Flame-retardant PC housing adds safety, with power use under 2W. Install in clean, dry areas for best performance
•Meets Everyday Safety Needs – Ideal for use in kitchens, living rooms, bedrooms, RVs, basements, and more, this gas detector is an essential tool to help keep your home and family safety
•Testing Procedure: After plugging in, the device requires a 2–3 minute warm-up before normal operation. Once ready, slowly release the test gas. The alarm will sound when gas levels reach the threshold and stop once concentrations return to normal

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$18.99

$21.99

-14%

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Hembisen

Combination Natural Gas Detector & Carbon Monoxide Detector, 4-in-1 Carbon Monoxide Alarm,Fahrenheit(°F) & Humidity,Propane,Methane,Gas Detector Alarm & CO Detector for Home,RV,Apartment

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•【Upgrade Plug-in Combination Gas & Carbon Monoxide Detector】 Plug and play, easy to install, 4-in-1 sensor, real-time monitoring display and alarm.
•【Combination Gas & Carbon Monoxide Sensor】 Adopting catalytic combustion sensor and electrochemical sensor, real-time monitoring the concentration of combustible gas and carbon monoxide, with sharper and more accurate sense of smell.
•【Temperature（°F） and Humidity Sensor】Real-time detection and display of temperature and humidity, let you know the environment in real time.
•【85dB Alarm Sound】Combination gas and carbon monoxide detector will alert you immediately when the combustible gas or carbon monoxide concentration reaches the default value.
•【Upgraded Design Round Color Screen】Color display with bigger and clearer digital display.
•【Application】Combination gas and carbon monoxide detector is suitable for home, restaurant, apartment, office, hotel, petroleum plant, gas station, campervan, etc.
•Combustible gases including natural gas, methane, propane, LNG, LPG and etc
•Package weight 100g

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$33.99

$39.99

-15%

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Daffypop

Daffypop Plug-in Carbon Monoxide & Natural Gas Leak Detector, 4-in-1 CO, Methane, Propane Alarm with Temperature & Humidity Monitor for Home, Kitchen, RV, Hotel, Travel – White

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•4-in-1 Detection for Complete Safety Detects carbon monoxide, natural gas, methane, and propane in one device—ideal for protecting homes, kitchens, RVs, hotels, and travel accommodations
•Easy Plug-In Real-Time Monitoring Simply plug into any standard wall outlet for continuous, reliable protection. Advanced sensors provide instant alerts to safeguard your family
•Built-In Temperature & Humidity Display Digital LCD shows current temperature and humidity levels, helping maintain a safe and comfortable indoor environment
•Loud Alarm & Bright LED Warnings Equipped with a 85dB alarm and flashing LED indicators to ensure you notice danger immediately—even while sleeping
•Compact, Portable & Travel-Friendly Lightweight design fits easily in kitchens, basements, RVs, hotels, and vacation rentals. Perfect for home and on-the-go safety
•Made for Everyone Designed for families with kids, seniors, or pets, as well as singles living alone, renters, and landlords who want peace of mind. It is especially useful in homes with elderly parents, pregnant women, or young children who may be more vulnerable to harmful gas exposure. No matter if you own a house, rent an apartment, or manage multiple properties, this 4-in-1 gas and carbon monoxide alarm delivers reliable protection
•For Every Space Suitable for multiple indoor spaces including kitchens, bedrooms, basements, garages, RVs, dorm rooms, rental apartments, vacation homes, and hotels. Also a smart choice for landlords, property managers, and small business owners who want to provide safe environments for tenants, employees, and customers. Its compact non-folding design blends easily into any room, offering round-the-clock safety wherever you need it most

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$24.64

$28.99

-15%

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GasKnight Detection

Natural Gas Detector For Home + Propane Detector + Combustible Gas Detector. Plug-In Natural Gas Alarm, Gas Leak Sensor Explosive LPG, LNG, Methane, Butane, Natural Gas Detectors for Home, kitchen, RV

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•✅ PROTECTION WITH STYLE – GasKnight Detection knows every second counts. That's why our GK2000 natural gas detector gives a pre-alarm at 2.5% LEL (a lower sensitivity) when it identifies: 1. Natural gas (methane, butane, LNG, etc.) or 2. Propane (LPG). And we do it in a modern, aestetically pleasing way!
•✅ SAVE TIME - Simple Plug & Play! Skip the hassle of complicated installations and battery replacements. Just plug the GasKnight GK2000 propane gas detector in and enjoy peace of mind instantly.
•✅ KEEP YOUR FAMILY SAFE! – With a GasKnight gas sensor in your home, get peace of mind knowing you've taken every step to protect your family from accidents caused by hazardous gas leaks from appliances like stoves, furnaces, water heaters, washing machines, fireplaces, or kitchens.
•✅ STAY ELEGANT – No messy cords or wall damage! This modern, wireless, white gas leak detector for home fits seamlessly into your home or camper’s decor, adding safety without sacrificing style.
•✅ 2-YEAR WARRANTY - Love your GasKnight gas meter or we’ll issue a full refund, no questions asked. American company.

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$19.99

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STKYGOOD

Natural Gas Leak Detector for Home, Propane and Methane Gas Alarm, Plug-in Gas Leak Sensor with Sound & Light Warning, Gas Safety Monitor for Kitchen & RV

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•Accurate Gas Detection – Effectively detects natural gas, propane, and methane leaks, helping to protect your family and property from potential hazards
•Loud Sound & Light Alarm – Emits a high-decibel alarm and bright red flashing light when gas is detected, ensuring timely alerts even from a distance
•Easy Plug-in Installation – Simply plug into a standard power outlet; no complex wiring or tools required. Ideal for kitchens, basements, RVs, and garages
•Real-time Monitoring – Continuously monitors the air for gas leaks, providing 24/7 protection with low power consumption
•Compact & Durable Design – Space-saving, lightweight, and made from flame-retardant ABS material for long-lasting reliability

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$16.99

$17.99

-6%

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MODUN D

Gas Detector Alarms for Home, LPG | Natural Gas | Coal Gas Leak Detector Alarm, Methane Propane Detector Butane Combustible Gas Alarm for Kitchen Garage, Plug-in Sensor Gas Monitor with LED Display

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•【Protect your families】-- When combustible gas leak (kitchen methane/natural gas/camping propane) exceed the standard, the gas detector will emit 85dB alarm. It cannot detect carbon monoxide and carbon dioxide. Widely be used in restaurant, kitchen, hospital, hotel, oil factory, garage, gas station, etc.
•【LED digital display and audible warning】-- The gas alarm display does not light up under normal conditions (in standby mode). If a flammable gas leak is detected, the corresponding number will be displayed on the screen. Alarm sounds and flashes red once the concentration above 5% LEL. The alarm will be in different alarm states based on the concentration of flammable gas.
•【Durable & Energy saving】-- Plug-in gas alarm designed for home use. Main-powered supply which makes it super easy and convenient to install. High quality plastic ABS frame, easy to clean. It uses ≤2 watts electricity, saves much power.
•【Test method】-- Press and hold the lighter switch at the gas inlet of the methane detector and deflate slowly (do not turn on the lighter during deflation). When the concentration reaches the alarm threshold, it will alarm, until it falls below the alarm point. Precautions: The system warm-up time is about 3 minutes. During this period, the gas test will not work.
•【Remind for Installation】-- Do not install the gas alarm in a place with a lot of dust, oil smoke and water vapor, which will affect the internal sensor of the alarm and cause false alarms. Please choose a suitable location to install the alarm according to the actual situation.

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$18.65

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