Keep your family and home safe and secure with these best gas leak detectors.
Our Top Picks
Best Overall Gas Leak Detector: UEi Test Instruments CD100A at Amazon
“Finds dangerous leaks quickly, even around corners and through cracks, holes, and vents…”
Best Budget Gas Leak Detector: BrassCraft Detector at Amazon
“An affordable detector that will keep you safe.”
Best Multi-Gas Leak Detector: First Alert Digital Alarm at Home Depot
“Covering all the most likely types of leaks, a multi-gas detector is your best option.”
Best Natural Gas Leak Detector: Neartop Household Alarm at Amazon
“The gas sensor plugs into any standard wall outlet and will easily mount to the wall for easy access.”
Best Handheld Gas Leak Detector: Sgile Portable Detector at Amazon
“This detector is the perfect choice for quick and easy routine leak checks.”
Best Spray Gas Leak Detector: Camco 10324 at Amazon
“Coming in an eight-ounce bottle, this spray is similar to other handheld detectors when you are trying to find the source of a leak.”
Best Outdoor Gas Leak Detector: General Tools NGD268 at Amazon
“Perfect for both home and commercial use while outdoors.”
01 of 07
Best Overall Gas Leak Detector: UEi Test Instruments CD100A
The best type of gas leak detector is one that is simple and convenient to use. While it may be tempting to go with a professional detector, hunting down potential leaks can be a time-consuming process with more advanced features with a steep learning curve. A more user-friendly detector, however, will let you get to finding those potentially dangerous leaks combustible gas leaks so you can identify and fix them in less time.
The UEi Test Instruments CD100A is one such detector that takes the guesswork out of finding dangerous leaks quickly, even around corners and through cracks, holes, and vents. Equipped with an 18-inch gooseneck articulating sensor, the detector accurately identifies various types of combustible gas. The green light indicator provides a clear and concise way to know when you are dealing with a gas leak so there is no guesswork involved.
02 of 07
Best Budget Gas Leak Detector: BrassCraft Detector
It can be tricky to find a good budget gas detector. Some models sacrifice quality for a cheaper price. When buying a gas detector, you will want to be sure that the final device you buy will still get the job done. Otherwise, the cost savings you gain won’t be worth the increased risks you may face. For an affordable detector that will keep you safe, go with the BrassCraft Detector.
The BassCraft Detector is a portable wand designed for on-the-go use. While it doesn’t provide constant monitoring, you can use it during regular maintenance checkups or whenever you suspect a leak is possible. A set of yellow and red lights indicate the severity of a leak with an audible alarm sounding when dangerous levels are present. When not in use, the removable cap protects the sensor to keep it functioning perfectly.
03 of 07
Best Multi-Gas Leak Detector: First Alert Digital Alarm
Some gas leak detectors are designed to pick up only one or two types of gas. This can be useful if you know your home only uses a certain type of gas for heating, cook or other tasks. If you aren’t sure, however, or just want to cover all the most likely types of leaks, a multi-gas detector is your best option. The First Alert Digital Alarm will keep watch for several types of gas including natural, methane and carbon monoxide.
The First Alert plugs directly into a wall outlet so you don’t have to worry about losing power. For power outages, a backup battery is present to provide a consistent monitoring presence. The detector will monitor for explosive gases using an electrochemical multi-gas sensor with a remote control. A digital display will also give you an easy-to-understand readout of the level of detected gases.
04 of 07
Best Natural Gas Leak Detector: Neartop Household Alarm
Natural gas is one of the most common types of leaks you are likely to experience in your home. Used for cooking and heating, most homes have some type of gas line running around the interior to places like the kitchen, attic or basement. Since it is odorless, when it does leak, you might not notice without a proper detector like the Neartop Household Alarm.
The gas sensor plugs into any standard wall outlet and will easily mount to the wall for easy access. Detecting either natural or liquefied petroleum gas, the sensor will sound an alarm you can easily hear from any point of the house. A long lasting and clear OLED screen provides a readout of the gas concentration at any point. Keep an eye on the readout to see if gas levels rise or fall under during normal everyday use.Continue to 5 of 7 below.
05 of 07
Best Handheld Gas Leak Detector: Sgile Portable Detector
Every now and then, it’s a good habit to check out the entire length of a gas line to make sure the pipes haven’t developed any small cracks or leaks. Permanent leak detectors are good at monitoring single rooms, but you will need a handheld detector to make sure the entire line is okay. The Sgile Portable Detector is the perfect choice for quick and easy routine leak checks.
This handheld detector is the best solution for tracking down the source of a leak before it becomes a major problem. A highly sensitive sensor sits on top of a flexible tube that allows you to change the detection direction to hone in on the leak’s source. Sound and visual alarms will indicate the amount of gas as you walk around. Given the wide range of gases this unit can detect, it is even sensitive enough for commercial work.
06 of 07
Best Spray Gas Leak Detector: Camco 10324
High tech solutions to detecting gas are common. From the home alarm sensors to handheld devices, they get the job done until the power runs out. If you want something more simple and less electricity-dependent, consider using a spray. A spray to detect a gas leak? You betcha! Just like handheld detectors, a spray such as the Camco 10324 is easy to use when checking out the integrity of a gas line.
Coming in an eight-ounce bottle, this spray is similar to other handheld detectors when you are trying to find the source of a leak. Once you have detected the gas leak in the first place, you can use the spray on pipes to pinpoint the problem location. The liquid will settle onto the pipe and will begin to form bubbles anywhere a leak is present. The size and intensity of the bubbles will also tell you how severe the leak is.
07 of 07
Best Outdoor Gas Leak Detector: General Tools NGD268
Outdoor detection can be tricky since moving air and other orders/gases can prevent a good detector from functioning correctly. That means your gas detector needs to be designed for outdoor use. Outdoor sensors are more refined and sensitive to detect the gasses it monitors while ignoring the rest. The General Tools NGD268 is one of the few user-friendly options meant for home use outdoors.
Detecting a wide range of gases such as methane, coal, natural, propane and alcohol, the NGD268 is meant for both home and commercial use while outdoors. The flexible sensor probe is long enough to get into tight spaces while searching for a leak. The advanced readout displays the severity of the gas so you can pinpoint the specific location regardless of the outside conditions.
Products Tested by The Spruce
How We Tested
Our reviewers spent one hour testing a top-rated gas leak detector. To get the most comprehensive results, they used it in different areas of their homes, including behind the stove. We asked our testers to consider the most important features when using this detector, from gases detected to sensitivity. We've outlined the key points here so that you, too, know what to look for when shopping.
What to Look for in Gas Leak Detectors
Gases detected Different products are designed to sense the presence of specific gases in the air. For home use, most people opt for a device that monitors for either natural gas or carbon monoxide. However, if you want to cover all your bases, some detectors provide more comprehensive protection, monitoring for all of the most common combustible gases.
Style There are several styles of gas leak detectors, ranging from handheld units to plug-in alarms and even simple liquid sprays. If you want to monitor for gas leaks 24/7, you’re probably better off with an alarm-style unit that’s similar to a smoke detector. However, if you just want to check for gases periodically, a handheld unit or spray might do the trick.
Sensitivity You should also consider the sensitivity of your gas leak detector, measured in ppm or parts per million. Why does this matter? Consider this: Prolonged exposure to carbon monoxide can be harmful to your health at just 10-24 ppm. If your detector doesn’t sense the gas until the concentration reaches 50 ppm, your family could be breathing in this toxic gas for quite some time before the sensor alerts you.
Test Results: UEi Test Instruments CD100A (Best Overall)
What We Like
Easy to use
Simple indicator lights
What We Don't Like
Our reviewers found the UEi Test Instruments CD100A to be super easy to set up and use. “I would recommend that anybody who lives in a home with aging infrastructure have this as a safety tool,” declared one tester. Our reviewers liked the overall design, flexible probe, and simple indicator lights. One tester said, “I was able to maneuver the probe to reach the pipe joints behind the oven without moving the oven itself.” It’s worth noting that it is battery operated, but the battery comes supplied.