20 Best Natural Gas Leak Detector [2024]

Are you looking for the best natural gas leak detector? Based on expert reviews, we ranked them. We've listed our top-ranked picks, including the top-selling natural gas leak detector.

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1 Kidde Nighthawk Carbon Monoxide Detector & Propane, Natural, & Explosive Gas Detector, AC-Plug-In... Kidde Nighthawk Carbon Monoxide Detector & Propane, Natural, & Explosive Gas Detector, AC-Plug-In...
2 Klein Tools ET120 Gas Leak Detector, Combustible Gas Leak Tester with 18-Inch Gooseneck Has Range 50... Klein Tools ET120 Gas Leak Detector, Combustible Gas Leak Tester with 18-Inch Gooseneck Has Range...
3 Y201 Propane and Natural Gas Leak Detector; Portable Gas Sniffer to Locate Gas Leaks of Combustible... Y201 Propane and Natural Gas Leak Detector; Portable Gas Sniffer to Locate Gas Leaks of...
4 Techamor Y201 Gas Leak Detector, Portable Methane Propane Combustible Natural Gas Leak Sniffer... Techamor Y201 Gas Leak Detector, Portable Methane Propane Combustible Natural Gas Leak Sniffer...
5 GasKnight 2.0 Natural Gas Detector & Propane Detector w LCD Display. Natural Gas Alarm / Monitor for... GasKnight 2.0 Natural Gas Detector & Propane Detector w LCD Display. Natural Gas Alarm / Monitor...
6 PANGAEA Gas Detector Portable Natural Gas Tester Detector, Combustible Propane Methane Gas Sensor... PANGAEA Gas Detector Portable Natural Gas Tester Detector, Combustible Propane Methane Gas Sensor...
7 Seesii Portable Gas Leak Detector, Handheld Natural Gas Sniffer High Sensitivity with LCD Display,... Seesii Portable Gas Leak Detector, Handheld Natural Gas Sniffer High Sensitivity with LCD...
8 Natural Gas Detector and Propane Detector. Natural Gas Alarm and Monitor for Home, Kitchen, Camper,... Natural Gas Detector and Propane Detector. Natural Gas Alarm and Monitor for Home, Kitchen,...
9 Natural Gas Detector and Propane Detector; Gas Leak Alarm for Home, Kitchen, Camper, Trailer, RV;... Natural Gas Detector and Propane Detector; Gas Leak Alarm for Home, Kitchen, Camper, Trailer, RV;...
10 Natural Gas Detector, Propane Gas Leak Detector, Natural Gas Detector for Home, High Sensitivity... Natural Gas Detector, Propane Gas Leak Detector, Natural Gas Detector for Home, High Sensitivity...
11 PANGAEA Digital Gas Detector, Portable Gas Tester Detector, Bright LED Screen, Natural Gas (Methane)... PANGAEA Digital Gas Detector, Portable Gas Tester Detector, Bright LED Screen, Natural Gas...
12 Y201 Portable Propane Methane Natural Gas Leak Detector; Gas Sniffer to Locate Combustible Gas Leaks... Y201 Portable Propane Methane Natural Gas Leak Detector; Gas Sniffer to Locate Combustible Gas...
13 Gas Leak Detector by Forensics | Combustibles | 2021 Design | 10ft Drop Test | Natural Gas, Methane... Gas Leak Detector by Forensics | Combustibles | 2021 Design | 10ft Drop Test | Natural Gas,...
14 Natural Gas Detector, Propane Detectors for Home,Natural Gas Propane Leak Alarm for Home Kitchen,... Natural Gas Detector, Propane Detectors for Home,Natural Gas Propane Leak Alarm for Home Kitchen,...
15 Natural Gas Detector, Gas Leak Detector, Household Propane Leak Detector for Home Kitchen (1, White) Natural Gas Detector, Gas Leak Detector, Household Propane Leak Detector for Home Kitchen (1, White)
16 GasKnight PRO Natural Gas Leak Detector & Propane Detector Battery Operated Combustible Gas Detector... GasKnight PRO Natural Gas Leak Detector & Propane Detector Battery Operated Combustible Gas...
17 General Tools CGD900 Intrinsically Safe MSHA Approved Combustible Gas Leak Detector General Tools CGD900 Intrinsically Safe MSHA Approved Combustible Gas Leak Detector
18 CC091 Propane and Natural Gas Leak Detector, Portable Combustible Gases Methane Detector Sniffer... CC091 Propane and Natural Gas Leak Detector, Portable Combustible Gases Methane Detector Sniffer...
19 Propane and Methane Natural Gas Leak Detector, CC091 Portable Combustible Gas Sniffer Detector for... Propane and Methane Natural Gas Leak Detector, CC091 Portable Combustible Gas Sniffer Detector...
20 Propane Natural Digital Gas Detector, Gas Leak Detection, Home Gas Alarm, Plug-in Digital Gas... Propane Natural Digital Gas Detector, Gas Leak Detection, Home Gas Alarm, Plug-in Digital Gas...
SaleBestseller No. 1
Kidde Nighthawk Carbon Monoxide Detector & Propane, Natural, & Explosive Gas Detector, AC-Plug-In...
  • Easy to install CO and explosive gas alarm with three convenient mounting options including AC wall outlet, plugin six foot power cord, or table top
  • Carbon Monoxide (CO) alarms four quick beeps, followed by five seconds of silence, followed by four quick beeps. Displays CO concentration
  • Gas alarms one second of alarm on, one second of alarm off, repeating with “GAS” shown in display
  • Loud pulsing alarm that will sound to alert you to a potential problem
  • Low battery warning feature indicates when the battery needs replacement
SaleBestseller No. 2
Klein Tools ET120 Gas Leak Detector, Combustible Gas Leak Tester with 18-Inch Gooseneck Has Range 50...
  • 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
  • Automatic zero-point calibration at power-up (lights will flash during self-calibration; this does not indicate the presence of gas)
  • 18-Inch flexible gooseneck expands sensor's reach; clips onto meter for storage
SaleBestseller No. 3
Y201 Propane and Natural Gas Leak Detector; Portable Gas Sniffer to Locate Gas Leaks of Combustible...
  • MULTIPLE DETECTABLE GASES: Locates combustible & explosive gas leaks from methane / natural gas, propane, fuel, ethane, butane, alcohol, coal gas,...
  • FLEXIBLE & PORTABLE GAS LEAK DETECTOR: Bend 12-inch length sensor neck in any direction along gas pipes & fuel lines or within confined spaces....
  • VISUAL / AUDIO GAS INDICATORS: 6 LEDs with 85dB alarm notify user of presence and relative concentrations of natural gas & propane leaks.
  • ADJUSTABLE SENSITIVITY: Increase sensitivity dial to find small gas leaks. Decrease sensitivity to find larger explosive gas leaks while filtering out...
  • LIFETIME WARRANTY + ORIGINAL DESIGN: We stand fully behind this product and will replace it if it ever breaks! We have an English fluent chemist on...
SaleBestseller No. 4
Techamor Y201 Gas Leak Detector, Portable Methane Propane Combustible Natural Gas Leak Sniffer...
  • Detect Various Flammable Gases: Portable Natural gas sniffer and tester is used to locate exact gas leak for various combustible gas, such as methane,...
  • Detection Range: Approximately 50 to 10,000 ppm (Based on Methane), instant response once encounter leakage points.
  • Easy-to-Use Gas Leak Detector: Powered by 3 AAA batteries (Not included), 12 inch bendable gooseneck can locate and detect the gas leaks even in...
  • Sound and Visual Gas Alarm: UL2075 Certified. Six red LED’s (visual) and 85dB audible alerts once encounter gas leakage along pipeline or around the...
  • Original Design and Lifetime Technical Support: Design patent and certifications are applied to make sure the product quality and uniqueness....
Bestseller No. 5
GasKnight 2.0 Natural Gas Detector & Propane Detector w LCD Display. Natural Gas Alarm / Monitor for...
  • ✅ PROTECT YOUR FAMILY TO THE MAX! – The All-In-One GasKnight 2.0 natural gas leak detector detects these main deadly gases once an 8% LEL is...
  • ✅ GET INSTALLATION FLEXIBILITY- This propane alarm has an extra-long 6 foot power cord which allows you to install it in the exact ideal location...
  • ✅ GET MAXIMUM PRECISION – The GasKnight 2.0 has an LCD screen that displays precise, real-time gas % readings so that you know the exact gas...
  • ✅ STAY STYLISH – This newly released natural gas alarm is sleek and modern and has a beautiful blue LCD screen that will complement the style...
  • ✅ HAPPINESS GUARANTEED - In plain English, if you don't like your GasKnight 2.0, we'll refund your money. We are an American company. FREE 18...
SaleBestseller No. 6
PANGAEA Gas Detector Portable Natural Gas Tester Detector, Combustible Propane Methane Gas Sensor...
  • Portable natural gas detector for detecting all combustible gas leak, LPG, LNG, fuel, hydrocarbons (methane, natural gas, gas, ethane, propane,...
  • Use 3xAA batteries. Batteries included. Compact size, light weight, easy to carry and operate. Long flexible stainless probe reaches all areas.
  • Audible semiconductor probe and auto fast warm-up.
  • Instant response, pinpoint leak position, whether in your home or in your RV. Audio & visible leakage alarm indication and adjustable sensitivity....
  • Video tutorial for your preparation. Please scroll down to "Related Video Shorts" on this page to find out. Also, you can download the latest version...
Bestseller No. 7
Seesii Portable Gas Leak Detector, Handheld Natural Gas Sniffer High Sensitivity with LCD Display,...
  • 【DETECTS MANY KINDS OF COMBUSTIBLE GASES】 Detects a large number of flammable gases, like methane, natural gas, propane, butane, ethane, coal gas,...
  • 【HIGH SENSITIVE AND QUICK RESPONSE】Has two sensitivity settings instead of a knob like the other handheld detectors,Quick response within 5...
  • 【AUDIBLE & VISUAL ALARM】Alarms continuously with 85dB tone and LCD light turn red when detecting gas leak. has a digital backlight LCD screen,...
  • 【COMPACT & PORTABLE】Has an easy-to-understand interface with its on/off and sensitivity button, customers can operate the device with one hand....
  • 【WIDE APPLICATION】Hold this handheld detector in the area where you think there might be a leak and wait for the device to display the current gas...
SaleBestseller No. 8
Natural Gas Detector and Propane Detector. Natural Gas Alarm and Monitor for Home, Kitchen, Camper,...
  • ✅ 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...
  • ✅ 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...
  • ✅ 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...
  • ✅ GET MAXIMUM SAFETY - The All-In-One GasKnight natural gas leak detector detects the main deadly gases: 1. Natural gas (Methane, butane, ethane,...
  • ✅ HAPPINESS - In plain English, if you don't like your GasKnight, we'll refund your money. We are an American company. FREE 2-YEAR AVAILABLE. ORDER...
Bestseller No. 9
Natural Gas Detector and Propane Detector; Gas Leak Alarm for Home, Kitchen, Camper, Trailer, RV;...
  • SAFETY - Help reduce your worries that the stove gas has been left on accidentally. This explosive gas leak alarm will sound an 80dB siren and...
  • SCIENTIFIC - This alarm precisely measures and displays concentration of combustible gas as an easy-to-read percentage from 0% to 20% of LEL. View the...
  • ECONOMICAL & GREEN - This alarm uses <3 watts of electricity and has a small energy footprint. This alarm will also help prevent someone from leaving...
  • DURABLE - Shelled in double-sided ABS, this product wipes clean easily. Use in the kitchen or in your camper.
  • ORIGINAL DESIGN & LIFETIME USA SUPPORT - We have worked with the supplier that holds this product’s design rights so we are sure this item is tried...
Bestseller No. 10
Natural Gas Detector, Propane Gas Leak Detector, Natural Gas Detector for Home, High Sensitivity...
  • Detect Multiple Gases: Home natural gas detector suitable for detecting LPG, natural gas, coal gas, gas fuel, artificial gas, liquefied petroleum gas,...
  • Play Voice & Sound Alarm: Gas Detector offers Voice Notification and a digital readout of the GAS concentration.When gas leak concentration reaches...
  • Widely Applied: This product can be used as independent family alarm equipment, and also can be used as front detector of alarm system. Widely Used...
  • Easy-to-install: Gas leak detector adopts Easy-to-install Design, can be used by plugging directly into the power socket to detect leaked gas.
  • Notice: The system warm-up time is about 2-3 minutes. During this time period, the gas test will not work. You need to wait for the display to show 0...
Bestseller No. 11
PANGAEA Digital Gas Detector, Portable Gas Tester Detector, Bright LED Screen, Natural Gas (Methane)...
  • Portable gas detector for detecting gas leaks of natual gas or propane.
  • Two models available for more accurate detection: Natural Gas/Methane model for detecting natural gas, normally used in house with gas pipelines...
  • Use 3xAA batteries. Large LED display shows the concentration level of the gas leak detected in real time. Compact size, light weight, easy to carry...
  • Audible semiconductor probe and auto fast warm-up.
  • Instant response, pinpoint leak position, whether in your home or in your RV. Audio & visible leakage alarm indication and adjustable sensitivity....
Bestseller No. 12
Y201 Portable Propane Methane Natural Gas Leak Detector; Gas Sniffer to Locate Combustible Gas Leaks...
  • ✔ DETECTOR FOR SNIFFER VARIOUS COMBUSTIBLE GASES:Suitable for detecting various combustible gas leaks, such as methane, natural gas, propane,...
  • ✔ FLEXIBLE PROBE:Portable Gas leak detector with a 12-inch flexible probe, the probe can be bent arbitrarily, even in difficult to reach narrow...
  • ✔ PORTABLE USE:3 AAA batteries (not included) are used for power supply. The natural gas leak detector sniffer can be carried with you and used...
  • ✔ ACOUSTIC AND VISUAL GAS ALARM:Y201 has six red LEDs (visual) and 85dB audible alarm. When gas is detected, LED and sound alarm will warn of gas...
  • ✔PATENTS AND SATISFACTORY AFTER SALES SERVISE:Applied for patents and certifications, product quality is guaranteed. If you are not satisfied with...
Bestseller No. 13
Gas Leak Detector by Forensics | Combustibles | 2021 Design | 10ft Drop Test | Natural Gas, Methane...
  • ⚛️ ACCURATE: Made in Japan sensor. Methane Calibrated.
  • 💪 SHOCK: ABS housing can take a 10ft drop.
  • 🌈 DISPLAY: Large color LCD screen with temperature.
  • 🌋 USES: For inspectors, technicians, engineers.
  • 🕵️ TRUST: ** 1 year limited warranty ** 7 year sensor life **
Bestseller No. 14
Natural Gas Detector, Propane Detectors for Home,Natural Gas Propane Leak Alarm for Home Kitchen,...
  • 【Detect Multiple Gases】- Home natural gas detector suitable for detecting LPG(Methane), natural gas, coal gas, gas fuel, artificial gas, liquefied...
  • 【LED Digital Display & Sound Warning】- Gas Detector offers Voice Notification and a digital readout of the GAS concentration.When gas leak...
  • 【Easy to Install】- Gas leak detector adopts Easy-to-install Design, can be used by plugging directly into the power socket to detect leaked gas.
  • 【Widely Applied 】-This product can be used as independent family alarm equipment, and also can be used as front detector of alarm system. Widely...
  • 【Precautions】- The system warm-up time is about 2-3 minutes. During this time period, the gas test will not work. You need to wait for the display...
Bestseller No. 15
Natural Gas Detector, Gas Leak Detector, Household Propane Leak Detector for Home Kitchen (1, White)
  • Natural Gas Detector: Gas leak detectors for home use make your environment safer.
  • Gas Leak Detector: Adopt high-precision sensor technology to accurately monitor leaked gas.
  • LED Digital Display & Sound Warning:Gas Detector offers Voice Notification and a digital readout of the GAS concentration.When gas leak concentration...
  • Easy to Install: Gas leak detector adopts Easy-to-install Design, can be used by plugging directly into the power socket to detect leaked gas.
  • Precautions: The system warm-up time is about 2-3 minutes. During this time period, the gas test will not work. You need to wait for the display to...
Bestseller No. 16
GasKnight PRO Natural Gas Leak Detector & Propane Detector Battery Operated Combustible Gas Detector...
  • ✅ PROTECT YOUR FAMILY TO THE MAX! – The NEWLY RELEASED GasKnight Pro natural gas leak detector seeks out MANY explosive gases: 1. Natural gas...
  • ✅ DETECT THE SMALLEST LEAKS - The PORTABLE GasKnight Pro is EXTREMELY SENSITIVE with an adjustable sensitivity dial and an EXTRA-LONG 15.5 inch...
  • ✅ YOU ARE NOT ALONE - GasKnight is an American company and your purchase comes with an instructions manual, step-by-step instructional video(s),...
  • ✅ SAVE MONEY! – BATTERIES INCLUDED! This portable propane detector COMES WITH 4 AA BATTERIES allowing you to experience LONG LASTING, HIGH...
  • ✅ HAPPINESS GUARANTEED - In plain English, if you don't like your GasKnight Pro gas sniffer, we will give you your money back. FREE 2 YEAR...
Bestseller No. 17
General Tools CGD900 Intrinsically Safe MSHA Approved Combustible Gas Leak Detector
  • Ideal for detecting more combustible gases (including hydrocarbons) than competitive units; sensitivity as low as 5ppm (methane)
  • Numeric LED display of sensitivity; bright LED is visible in sunlight; Response time is instantaneous and warm up time is less than 10 seconds
  • Features long life sensor (300+ hours), unique digital leak size alarm, automatic calibration and alarm mute mode
  • MSHA approved; intrinsically safe (in methane-air only)
  • Made in the USA
Bestseller No. 18
CC091 Propane and Natural Gas Leak Detector, Portable Combustible Gases Methane Detector Sniffer...
  • DETECTS A WIDE RANGE OF COMBUSTIBLE GASES: Quickly detect and locate the familiar combustible gases leaks like natural gas, propane, methane, sewer...
  • QUICK RESPONSE & ADJUSTABLE GAS SENSITIVITY: Detection range: Approximately 50 to 10,000 ppm (based on Methane). Capable of Increasing or decreasing...
  • SIMPLE TO USE: Power on gas detector after inserting 3 AAA batteries (Not included), start around 10-15s warming-up and adjust dial to the lower...
  • AUDIBLE & VISUAL ALARM: Visual 6 LEDs and 85dB audible alerts that increase with gas concentration. 12.6-Inch gooseneck gas sensor probe enable you to...
  • NO RISK INVESTMENT & YOU WILL GET: All CC091 gas leak detectors were manufactured under strict quality standards that obtained US Patent and qualified...
Bestseller No. 19
Propane and Methane Natural Gas Leak Detector, CC091 Portable Combustible Gas Sniffer Detector for...
  • DETECT A VARIETY OF COMBUSTIBLE GASES LEAK: CC091 Home Gas leak detector works for detecting natural gas, propane, methane, sewer gas, industrial...
  • SUPER SENSITIVE AND QUICK RESPONSE: LEDs light and speaker will alarm instantly when the gas sensor found gas leak, even a small gas leak. Gas...
  • SIMPLE TO USE: Insert 3 AAA batteries (Not included) and turn down the dial switch to lowest location (Zero Point), then power on detector, and it...
  • ADJUSTABLE GAS SENSITIVITY: Adjust the sensor sensitivity to pin-pointing the source of the gases leak in different gas leak environments, we can...
  • WHAT YOU GET: 24-Month Extended Warranty + FREE Lifetime Technical Support - We stand behind our products and services and will give you full return...
Bestseller No. 20
Propane Natural Digital Gas Detector, Gas Leak Detection, Home Gas Alarm, Plug-in Digital Gas...
  • 【Suit for Multiple Gas Leak Detection】: Eksahol propane gas detectors are suitable for detecting LPG(Propane and Methane), natural gas, coal gas,...
  • 【Suit for Multiple Scenes】: Eksahol natural gas detectors can be used as independent family alarm equipment, and also can be used as the front...
  • 【Powerful Quality & Functionality】: Natural gas detector adopting high-quality semiconductor calefaction type sensor. Gas leak detector visual and...
  • 【Easy to Install】: Gas leak sniffer adopts Easy-to-install Design, can be used by plugging directly into the power socket to detect leaked gas.
  • 【Warm Tips】: The system warm-up time is about 2-3 minutes. During this time period, the gas test will not work. You need to wait for the display...

Having trouble finding a great natural gas leak detector?

This problem is well understood by us because we have gone through the entire natural gas leak detector research process ourselves, which is why we have put together a comprehensive list of the best natural gas leak detectors available in the market today.

After hours of searching and using all the models on the market, we have found the best natural gas leak detector for 2023. See our ranking below!

How Do You Buy The Best Natural Gas Leak Detector?

Do you get stressed out thinking about shopping for a great natural gas leak detector? Do doubts keep creeping into your mind?

We understand, because we’ve already gone through the whole process of researching natural gas leak detector, which is why we have assembled a comprehensive list of the greatest natural gas leak detector available in the current market. We’ve also come up with a list of questions that you probably have yourself.

John Harvards has done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for natural gas leak detector that you consider buying. Your questions might include the following:

  • Is it worth buying an natural gas leak detector?
  • What benefits are there with buying an natural gas leak detector?
  • What factors deserve consideration when shopping for an effective natural gas leak detector?
  • Why is it crucial to invest in any natural gas leak detector, much less the best one?
  • Which natural gas leak detector are good in the current market?
  • Where can you find information like this about natural gas leak detector?

We’re convinced that you likely have far more questions than just these regarding natural gas leak detector, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for natural gas leak detector, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible natural gas leak detector. Make sure that you are only using trustworthy and credible websites and sources.

John Harvards provides an natural gas leak detector buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information.

How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available natural gas leak detector currently available on the market.

This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

  1. Brand Value: Every brand of natural gas leak detector has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
  2. Features: What bells and whistles matter for an natural gas leak detector?
  3. Specifications: How powerful they are can be measured.
  4. Product Value: This simply is how much bang for the buck you get from your natural gas leak detector.
  5. Customer Ratings: Number ratings grade natural gas leak detector objectively.
  6. Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their natural gas leak detector.
  7. Product Quality: You don’t always get what you pay for with an natural gas leak detector, sometimes less, and sometimes more.
  8. Product Reliability: How sturdy and durable an natural gas leak detector is should be an indication of how long it will work out for you.

John Harvards always remembers that maintaining natural gas leak detector information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

If you think that anything we present here regarding natural gas leak detector is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly!

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FAQ:

Q: What is the best combustible gas leak detector?

A: Best Combination Gas Detector: Kidde Nighthawk KN-COEG-3 Best Combustible Gas Detector: EG Air EG-NGD050 Natural/Propane Gas Detector Best Handheld Combustible Gas Leak Detector: Amprobe GSD 600 Gas Leak Detector Best Carbon Monoxide&Smoke Detector: First Alert Smoke and Carbon Monoxide Alarm SCO501CN

Q: What is the best home gas detector?

A: – High sensitivity – Flexible and long probe to detect gas in hard-to-reach areas – Large LCD display for easy gas detection – Audible and visible alarms

Q: How to detect a natural gas leak in your home?

A: – Never use an oven for heating purposes. – Be mindful of children and how close they are to the oven when in use. – Inspect the oven for pungent odors or soot on its surface, as this may indicate improper combustion and carbon monoxide generation.

Q: How do you test for natural gas leak?

A: Verify the required test pressure and time needed in your area. Bleed air pockets from the system and close all vents. Calibrate test gauges. Make a note of the metal temperature at test time to allow for any weather fluctuations. Use a test gauge at the pressure source and at the furthest point from the pressure source.