Gas Line Repair & Installation
Safe, code-compliant gas line repairs, new appliance hookups, and leak detection, with every line pressure-tested before we leave.
✓ CA C-36 Licensed & Insured
✓ Same-Day Service Available
✓ Free Estimates
✓ Owner-Operated
✓ Se Habla Español
Your gas line feeds the appliances you use every day: the water heater, furnace, range, dryer, fireplace, and outdoor BBQ. A small mistake on a gas fitting doesn't show up as a drip on the floor. It shows up as a leak you can't see. Older homes across Los Angeles often have corroded black iron, outdated connectors, or lines that were added on over the years without being sized for the total load. Undersized lines starve appliances of gas, which causes weak flames, pilot outages, and tankless units that throw error codes. We size every line to your home's actual gas demand, install it to California code, and pressure-test the system before turning it back on. Whether you're adding a gas range, running a line to the backyard, or chasing a gas smell, you'll know the work is safe.
Why Gas Line Work Needs a Licensed Plumber
What We Do
Gas Line Repair & Leak Detection
Smell gas near an appliance or the meter? We use electronic leak detection to pinpoint the exact source, then repair or replace the failing section, fitting, or valve. Common culprits include corroded pipe, loose unions, worn appliance connectors, and old shutoff valves. Every repair is pressure-tested before gas is restored.
New Gas Lines & Appliance Hookups
Switching to a gas range, adding a dryer, installing a tankless water heater, or running gas to a fire pit, BBQ, pool heater, or patio heater. We size and run new lines in black iron, CSST, or underground polyethylene depending on the location, and hook up the appliance with a new shutoff valve and connector.
Line Upgrades & Replacements
Tankless water heaters and modern appliances often need more gas than an older line can deliver. We upgrade undersized lines, replace corroded or outdated piping, install sediment traps that code requires, and replace old flex connectors. If something needs upgrading, you'll get a price before we touch it.
Trusted Materials We Install
We install black iron pipe for exposed and interior runs, CSST flexible gas piping from manufacturers like Gastite and TracPipe where it makes sense, and polyethylene for underground lines, along with appliance connectors and shutoff valves from BrassCraft, Dormont, and Watts. Every material we use is approved for California gas installations. We handle the complete job: shutting the gas, sizing and running the line, installing shutoff valves and sediment traps, pressure-testing the system, relighting your pilots, and confirming every appliance fires correctly before we leave.
What To Expect
Every gas job starts with a look at your meter, your existing piping, and every gas appliance in the home. We calculate the total load so the line is sized correctly, because an undersized line starves your appliances and an oversized run wastes money. For leaks, we use electronic detection to find the exact source instead of guessing. Once you approve the estimate, we shut the gas, complete the work, and pressure-test the line to confirm it's sealed. We restore service, relight every pilot, and confirm your water heater, furnace, range, and dryer all fire correctly. Most repairs and appliance hookups are done in a few hours; larger new runs may take a full day. We'll tell you up front if your city requires a permit for the job.
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Call or Text
Free in-home assessment scheduled same-day
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Upfront Quote
We size the line to your gas load
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Professional Install
Pressure-tested and all appliances relit
Gas Line Services Across Greater Los Angeles
Premier Flow Plumbing serves homeowners across Pasadena, San Marino, Arcadia, La Cañada Flintridge, South Pasadena, Altadena, Sierra Madre, Monrovia, San Gabriel, Alhambra, Temple City, Rosemead, Glendale, La Crescenta, and surrounding San Gabriel Valley and Greater Los Angeles communities. Whether you're adding a gas appliance, upgrading for a tankless water heater, or tracking down a gas smell, give us a call. We serve Pasadena, the San Gabriel Valley, Greater LA, the San Fernando Valley, and surrounding Southern California communities.
Frequently Asked Questions
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If the smell is strong, leave the home right away. Don't flip light switches, use your phone indoors, or light anything. Once outside, call SoCalGas or 911. If it's safe and you know how, you can shut the gas off at the meter. For a faint or occasional smell near an appliance, call us and we'll use electronic leak detection to find the source.
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Yes. We install new gas lines and hookups for ranges, dryers, fireplaces, fire pits, BBQs, pool heaters, and patio heaters, indoors and outdoors. We'll check that your existing system can handle the added load before we run the line.
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Often, yes. Tankless units use much more gas at full fire than a standard tank heater, and many older homes have a 1/2-inch line that can't keep up. An undersized line causes error codes and inconsistent hot water. We size the line to your full household gas load before installing.
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Black iron is rigid steel pipe that has been used for decades and is very durable. CSST is a flexible stainless steel gas line that is faster to run through walls, attics, and crawlspaces with fewer fittings. Both are approved for California homes when installed correctly. CSST must be properly bonded per code. We'll recommend the right one for your layout.
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We use an electronic gas detector to trace the line and check every fitting, valve, and connector, then confirm with a leak-detection solution at the suspected spot. After any repair or new installation, we pressure-test the system to make sure the whole line holds.
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Most repairs and single appliance hookups take a few hours. Longer runs, underground lines, or whole-home line replacements can take a full day or more. You'll get a clear timeline with your estimate.
Get Your Gas Line Done Safely and To Code.
Get a free assessment from a licensed C-36 plumber who repairs and installs gas lines across Greater Los Angeles and Southern California. We'll check your system, size the line to your home's gas load, and give you a flat-rate price. Call or fill out the form below.