Gas Leak Detection
Locates suspected gas leaks and identifies the source of the problem, matched to licensed local plumbers equipped with proper gas detection tools.
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How Gas Leak Detection Works
Gas leak detection uses specialized electronic sensors and, in some cases, soap-solution testing to pinpoint exactly where gas is escaping from piping, fittings, or an appliance connection. Because gas leaks are a serious safety concern, this is always handled with immediate safety precautions first and precise detection second.
Finding a gas leak isn’t about guessing where it smells strongest, it’s about precise, professional detection equipment.
Signs You May Have a Gas Leak
These are the warning signs to watch for.
- A sulfur or rotten-egg smell near gas appliances or piping
- A hissing sound near a gas line, meter, or appliance connection
- Dead or discolored vegetation in a patch of yard, possibly over an underground line
- Unexplained physical symptoms like headache or dizziness when at home
- A gas appliance behaving inconsistently or pilot lights that won’t stay lit
What to Do If You Suspect a Gas Leak
This is a safety-first situation, not a detection project to attempt yourself.
- Leave the home immediately, taking everyone with you, including pets if safely possible
- Do not operate any light switches, phones, or appliances inside the home
- Once safely away from the property, call your gas company’s emergency line or 911
- Wait for confirmation it’s safe before returning, and arrange professional leak detection afterward
Why Compare Quotes Instead of Calling Just One Plumber
Here’s what matters when it comes to gas leak detection:
- Matched with licensed, insured plumbers equipped with proper gas detection tools
- Compare pricing for non-emergency detection once immediate safety has been addressed
- Free to use, with zero obligation to hire anyone you're matched with
If you suspect a gas leak, safety comes first, always. Once the situation is confirmed safe, comparing quotes for detection and repair takes just a few minutes.
Tell Us What You Need
Answer a few quick questions about your plumbing job — the problem, your timeline, and your property.
Get 3 Competing Quotes
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Pick the Best Deal
Compare quotes side-by-side. Check pricing, warranties, and reviews, then choose the pro that fits your needs and budget.
Everything You Need to Know About Detecting Gas Leaks.
What should I do the moment I suspect a gas leak?
Evacuate the home immediately without flipping light switches, using your phone indoors, or lighting anything, since even a small spark can ignite natural gas. Once safely away from the structure, call 911 and your gas utility’s emergency line, then arrange for a licensed plumber to perform gas leak detection and any needed gas line repair once the area is cleared as safe.
How do professionals detect a gas leak?
Technicians use calibrated gas detection meters that sense trace concentrations of natural gas in the air, combined with a physical inspection of pipe joints, fittings, and appliance connections, and sometimes a soap-and-water bubble test on accessible sections. For buried gas lines, more specialized underground detection equipment and certified technicians are required to safely trace the leak without disturbing the pipe.
How much does gas leak detection cost?
Gas leak detection typically costs between $100 and $350 for a standard inspection, though pricing can be higher if the suspected leak is in a buried line or hard-to-access area. Given the safety stakes involved, this is one service where getting a licensed, gas-certified plumber matters more than finding the cheapest gas leak detection quote.
Can I use a store-bought gas detector instead of calling a plumber?
A consumer natural gas detector can provide an early warning and is a worthwhile safety device to have installed near gas appliances, but it cannot pinpoint the exact location or severity of a leak the way professional equipment and a trained technician can. If a detector alarms or you smell gas, treat it as a signal to evacuate and call for professional gas leak detection, not as a diagnostic tool on its own.
What are the health risks of a gas leak besides fire?
Beyond the fire and explosion risk, natural gas leaks can displace oxygen in enclosed spaces and, if incomplete combustion is occurring in an appliance, contribute to dangerous carbon monoxide buildup. Symptoms of gas exposure include headache, dizziness, nausea, and fatigue. If anyone in the home experiences these symptoms alongside a gas odor, leave immediately and seek fresh air and medical attention if symptoms persist.
How often should I have my home checked for gas leaks?
Most plumbers recommend a gas safety check annually, or any time you notice a change in gas appliance performance, after any nearby excavation or construction work, or following an earthquake in seismic regions. Pairing this with a broader plumbing inspection helps catch small issues before they become hazardous leaks.
Does dead grass over my yard mean there's a gas leak?
A strip of dead or unusually yellow grass along the path of a buried gas line can indicate a leak, since escaping gas can suffocate plant roots even without an obvious smell reaching the surface. If you notice this pattern combined with any hint of a gas odor, it is worth scheduling gas leak detection to check the underground portion of your line.
Why does natural gas smell like rotten eggs if it's naturally odorless?
Natural gas is odorless in its raw form, so utilities add a chemical called mercaptan that produces a distinct rotten egg or sulfur smell specifically so people can detect leaks before they become dangerous. If you smell this odor at any strength, it should always be treated as a real gas leak warning, not a false alarm, and addressed with immediate gas leak detection.
Can old or corroded gas appliances cause a leak even if the gas line itself is fine?
Yes, the connection point where a flexible gas connector attaches to an appliance is a common leak source, especially on older appliances or connectors that have been kinked, bent, or corroded over time. This is different from a leak in the fixed gas line itself but is equally dangerous and should be checked during the same gas leak detection visit, particularly around a gas water heater or range connection.
Should I install an earthquake gas shutoff valve to reduce leak risk?
If you live in a seismically active area, an earthquake gas shutoff valve automatically cuts off gas flow when it senses strong ground shaking, which prevents leaks and fires caused by shifted or ruptured lines during an earthquake. This is a proactive layer of protection that works alongside, not instead of, regular gas leak detection checks.