Commercial kitchens, rooftop units, and equipment runs need gas piping that is correctly sized, permitted, and safe. New Pro installs, repairs, and tests commercial gas lines across the Westside — to code, with permits, flat-rate.
Written bySteven Lockhart
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Reviewed byMiguel Lopez, Owner & Licensed Plumber, New Pro Plumbing (CSLB #974600)
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Last reviewedJune 2026 · 7 min read
Quick Answer
Commercial gas lines — for kitchens, rooftop HVAC, water heaters, and equipment — must be correctly sized for the load, installed to code, permitted, and pressure-tested. New Pro handles commercial gas installation, repair, and leak detection across the Westside, pulls the permits, and tests before sign-off. Flat-rate after assessment.
Commercial gas work is governed by code and safety at every step, and it is not a place for shortcuts. This page is part of our commercial plumbing coverage across West Los Angeles. A commercial gas line must carry the full connected load of the equipment it serves, be installed to code with the right materials, be permitted and inspected, and pass a pressure test before it carries gas. New Pro handles all of it.
Commercial gas line service is the installation, repair, sizing, and leak testing of natural gas piping in business properties — for kitchens, water heaters, rooftop HVAC, and equipment — done to code, permitted and inspected, and pressure-tested before use.
The first question on any commercial gas job is load. Add up the BTU demand of every appliance the line will serve at once, account for the run length and pressure, and the pipe must be sized to deliver it. An undersized line starves equipment — a commercial range that will not reach temperature, a water heater that cannot keep up. We calculate the load and size the piping correctly, the same engineering behind our residential gas line work, scaled to commercial demand.
Commercial gas work is permitted and inspected through LADBS, and for good reason — a gas error is a life-safety error. We pull the permit, install to code, and pressure-test before the line carries gas. If you ever smell gas at your business, follow SoCalGas safety guidance: evacuate, call them or 911 from outside, and never search for the leak yourself.
New commercial equipment — a range, a rooftop HVAC unit, a tankless water heater bank — often needs a new gas run or an upsized line to carry the added load. We assess the total connected demand, design the piping, pull the permit, and install to code.
For a kitchen build-out or remodel, we coordinate the gas rough-in with your timeline and equipment specs so the line is ready and inspected when the equipment lands.
Adding gas equipment or building out a kitchen? Let’s size it right.
Call (310) 663-7666A suspected commercial gas leak is an emergency. Evacuate, call SoCalGas or 911 from outside, and once the gas is made safe, we locate the leak, repair the line to code, and pressure-test before restoring service.
We also test gas lines proactively — before a property transfer, after equipment changes, or as part of due diligence. A failed gas inspection can halt a project; we get the line right and re-tested.
The Bottom Line
Commercial gas work is code and safety from end to end — sized for the load, permitted, installed right, and pressure-tested before it carries gas. New Pro handles commercial installation, repair, and leak testing across the Westside, pulls the permits, and quotes flat-rate after assessing your load.
By total connected load — the combined BTU demand of every appliance the line serves at peak, adjusted for run length and pressure. The pipe must deliver that load, or equipment starves. We calculate it for your specific equipment rather than guessing from pipe size.
Yes. Commercial gas work is permitted and inspected through LADBS because a gas error is a life-safety error. We pull the permit, install to code, and pressure-test the line before it carries gas — the inspection and test are not optional steps to skip.
Treat it as an emergency. Evacuate everyone, do not flip switches or use phones inside, and call SoCalGas or 911 from outside. Once the gas is made safe, call us to locate and repair the leak and pressure-test the line before service is restored. Never search for a gas leak yourself.
Often, yes. New equipment adds to the connected load, and the existing line may be too small to carry it, or you may need a new run to the equipment location. We assess the added demand and either confirm the line is adequate or size and install what the new load requires.
Yes. A failed inspection usually means a sizing, material, or installation issue, or a leak the pressure test revealed. We diagnose what failed, correct it to code, and arrange re-testing and re-inspection so your project can move forward.
Yes. Rooftop HVAC, generators, and other commercial equipment need correctly sized, code-compliant gas runs, often with specific routing and support requirements. We design and install these to carry the load safely and pass inspection.
This page was written by the New Pro Plumbing content team and reviewed for technical accuracy by Miguel Lopez, owner and California-licensed plumber (CSLB #974600). Guidance follows U.S. EPA, U.S. Department of Energy, and California agency sources where cited. Any figures reflect New Pro Plumbing's typical practice and West Los Angeles conditions, not a quote — we confirm pricing in writing before any work begins.
What’s new: June 2026 — first publication.
Commercial kitchens, rooftop units, and equipment runs need gas piping that is correctly sized, permitted, and safe. New Pro installs, repairs, and tests commercial gas lines across the Westside — to code, with permits, flat-rate.
