JMJ Plumbing provides professional commercial gas line repair services with safety as the top priority. Gas issues are safety issues—period. We locate leaks, perform thorough testing, and repair or replace gas piping and connections to restore safe operation. Whether the issue involves a kitchen appliance, water heater, or equipment feed, we focus on code-compliant repairs, documented safety checks, and dependable results that help protect your facility, employees, and customers.
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Signs You Need Commercial Gas Line Repair
If you smell gas right now, do not troubleshoot it. Get people out of the building, call the gas utility or 911 from outside, and do not operate switches, equipment, or vehicles nearby. The signs below are the ones worth acting on before that point.
- A rotten egg or sulfur smell anywhere in the building — the odorant added to natural gas is doing its job — treat any detectable odor as an active leak until a licensed plumber or the utility proves otherwise
- A hissing or whistling sound near a meter, regulator, or appliance connection — gas is escaping under pressure, usually at a fitting, a flex connector, or a regulator vent
- Pilot lights that will not stay lit, or yellow and lazy burner flames — the supply pressure or volume is wrong, which points to an undersized line, a failing regulator, or a restriction in the piping
- Cooking or process equipment that will not reach temperature — the gas system cannot deliver the demand, which is common after new equipment is added to a line sized for the old load
- Dead or discolored vegetation in a line over a buried gas run — escaping gas displaces oxygen at the root zone, and it often shows above ground before anything is detectable inside
- Rust, pitting, or damaged coating on exposed black iron or corrugated stainless tubing — corrosion and mechanical damage are the leading causes of failure on piping that runs through mechanical rooms, roofs, and exterior walls
- The gas meter dial moving with every appliance shut off — gas is being consumed somewhere with nothing running, which means a leak on the system
Why Commercial Gas Work Has to Be Done by a Licensed Plumber
Gas piping is not a handyman scope, and on a commercial property it is not a maintenance-staff scope either. In Georgia, gas piping work is licensed work, and JMJ holds a Georgia Master Plumber license. That matters practically as well as legally: a repair that is not permitted and inspected can complicate an insurance claim, hold up a certificate of occupancy, or fail a health or fire inspection at the worst possible moment.
The technical side is just as real. Gas piping has to be sized to the total connected load, the length of the run, and the delivery pressure. Adding a fryer, a rooftop unit, or a new water heater to an existing line can starve every other appliance on the system if the pipe was never sized for it. Materials matter too: black iron, corrugated stainless steel tubing, and underground-rated polyethylene each have specific installation, support, bonding, and protection requirements, and mixing them incorrectly is a common failure we find.
Finally, every repair or alteration ends with a pressure test held for the duration the jurisdiction requires, and typically an inspection before the system is put back in service. Requirements vary by local authority, and we work to whichever applies at your address.
Our Commercial Gas Line Repair Process
- Make the situation safe — if there is an active leak we isolate the affected section or shut the system down, ventilate, and confirm the area is clear before any diagnostic work starts
- Locate and verify the leak — electronic gas detection, soap testing at joints, and a pressure test on isolated sections tell us exactly where the loss is rather than where it seems to be
- Size the system for what it actually serves — we total the connected load and check pipe size against run length and pressure, because a leak repair on an undersized system leaves half the problem in place
- Permit the work — we pull the permits the jurisdiction requires for repairs, alterations, and new runs, and schedule inspection as part of the job rather than an afterthought
- Repair or replace the piping — correct materials, proper support and protection, approved fittings, and appropriate sediment traps and shutoffs at equipment connections
- Pressure test, inspect, and relight — the system is tested and held, inspected where required, then appliances are relit and checked for correct flame and operation before we leave
Commercial Gas Line Service Across North Metro Atlanta
JMJ Plumbing has installed, repaired, and tested commercial gas piping across North Metro Atlanta since 1996, for restaurants, retail centers, warehouses, and multi-tenant buildings. We serve Acworth, Alpharetta, Canton, Cumming, Dunwoody, Hickory Flat, Holly Springs, Johns Creek, Kennesaw, Marietta, Milton, Roswell, Sandy Springs, Smyrna, Woodstock, and the surrounding communities. If you also handle gas at a home or a small rental property, our residential gas line service page covers that work. Buildings that want gas piping checked on a schedule alongside other systems should look at our commercial preventative maintenance program, and our 24/7 emergency service is available when equipment goes down.
Commercial Gas Line Repair FAQs
What should I do if I smell gas in our building?
Evacuate first. Get everyone out, leave doors open on the way, and do not operate light switches, thermostats, phones, or equipment inside the building. From outside and a safe distance, call the gas utility’s emergency line or 911. Once the utility has made the site safe, a licensed plumber can locate and repair the leak.
Who is legally allowed to repair a commercial gas line in Georgia?
Gas piping is licensed work and has to be performed by a licensed plumber, not by maintenance staff or a general contractor’s crew. JMJ holds a Georgia Master Plumber license, number MP210296. Unlicensed gas work creates code, inspection, and insurance exposure for the property owner well beyond the immediate safety risk.
Do gas line repairs require a permit?
In most jurisdictions, yes, for repairs, alterations, and new runs. The permit brings an inspection, and the inspection is what documents that the system was pressure tested and installed correctly. Requirements differ by local authority, so we confirm what applies at your address and handle the permitting as part of the job.
How do you find a gas leak?
With a combination of electronic gas detection, soap solution at joints and connections, and a pressure test on isolated sections of the system. The pressure test is the definitive step, because it proves whether a section holds rather than relying on where the odor is strongest. Buried lines may also need line tracing and bar-hole testing.
Can you add a gas line for new kitchen equipment?
Yes, and the first step is load calculation. New fryers, ranges, ovens, or rooftop units add demand that the existing piping may not support, and simply teeing into the nearest line is what causes low flame and equipment that will not hold temperature. We size the addition to the total connected load and permit the work.
Why was our gas shut off after an inspection?
Because the inspector found a condition considered unsafe, such as a leak, an unapproved connection, corroded or unsupported piping, a missing shutoff or sediment trap, or an appliance connected with the wrong material. The system stays off until the condition is corrected, tested, and re-inspected. We can address the write-up and get the system released.
How long does a gas pressure test take?
The test itself is held for a set duration at a set pressure, and the required time varies by jurisdiction and by the size of the system. Plan on the test being a meaningful part of the job rather than a formality, and add time for the inspection if one is required before the system can be turned back on.
What is CSST and is it a problem?
CSST is corrugated stainless steel tubing, a flexible gas piping material widely used in commercial and residential buildings. It is not a problem when it is installed correctly, but it has specific bonding, support, and physical-protection requirements. Improper bonding and unprotected runs through framing or mechanical spaces are the issues we most often find.
Gas smell, failed inspection, or new equipment to connect? Book commercial gas line service online, or call JMJ Plumbing at (770) 966-9654. If you smell gas now, evacuate and call the gas utility or 911 first. We are a Georgia Master Plumber licensed and insured company (MP210296) serving North Metro Atlanta since 1996, with 24/7 emergency service. Financing is available through GreenSky.