Gas Leak Detection & Repair in San Diego, CA
A gas leak is a true emergency, not a wait-and-see repair. A&A Plumbing is a licensed C-36 plumber that locates gas leaks, repairs or reroutes the line under permit, and pressure-tests it before service is safely restored.
- Licensed C-36 Gas Plumber
- Permitted & Pressure-Tested
- Upfront, Written Pricing
What a Gas Leak Looks and Smells Like
Natural gas is odorless, so utilities add mercaptan, a chemical that smells like rotten eggs or sulfur, to make leaks noticeable. A gas leak is a true emergency and should never be handled with a wait-and-see approach. A&A Plumbing has served San Diego since 2020 as a licensed C-36 plumber, locating leaks, repairing or replacing gas piping under permit, and pressure-testing every line before service is restored.
Warning signs include the rotten-egg smell of mercaptan, hissing near a gas line, dead vegetation over a buried line, dust blowing from the ground, higher gas bills, and headaches or dizziness. We find the source with combustible gas detectors, soap-bubble testing on exposed lines, and pressure-decay or isolation testing on hidden sections.
Repair requires a licensed C-36 plumber, a City of San Diego permit of roughly $195, and a 10 PSI pressure test with no measurable drop before SDG&E reactivates service.
Leave immediately and do not operate light switches, phones, or appliances. Get everyone outside, then call 911 and SDG&E's 24/7 emergency line at 1-800-411-7343 from a safe location. Do not re-enter or relight anything until a utility or licensed plumber clears it. Once safe, call A&A Plumbing at (619) 637-5215.
Gas Leak Detection & Repair Services in San Diego
From a failed connector to a full gas line replacement, we handle the whole repair.
Emergency Gas Leak Detection
Combustible gas detectors and soap-bubble testing find the source fast.
Gas line services →Gas Pipe Repair & Rerouting
Damaged or corroded sections cut out and repaired, or rerouted under permit.
Plumbing installation →Appliance Flex Connector Replacement
Aging range, dryer, and water heater connectors swapped for new flex lines.
Kitchen plumbing →Earthquake Shut-Off Valve Installation
Seismic valves that shut off gas automatically when strong shaking is detected.
Gas line services →Pressure Testing & Safety Inspections
A 10 PSI pressure test with no measurable drop, plus a line inspection.
Water heaters →Gas Line Replacement
Failing in-wall or buried lines replaced end to end, then permitted and tested.
Repipe & pipelining →Gas Leak Warning Signs and What They Can Mean
Gas leaks do not always smell strongly. Any clue below is reason to call a licensed plumber or the utility.
| Warning Sign | What It Can Mean |
|---|---|
| Rotten-egg or sulfur odor | Mercaptan escaping from a leaking line, fitting, or connector |
| Hissing or whistling near a line | Gas escaping through a crack, loose joint, or failed valve |
| Dead vegetation over a buried line | An underground gas leak starving roots of oxygen |
| Dust blowing from the ground | Gas pushing through soil from a buried line break |
| Headaches, dizziness, or nausea | Gas exposure indoors — leave the building immediately |
Our Gas Leak Repair Process
Here is what to expect when you call us.
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1
Call & Secure the Area
Call (619) 637-5215. If you smell gas, leave and call 911 and SDG&E from outside.
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2
Detect & Locate
We pinpoint the leak with combustible gas detectors, soap-bubble testing, and isolation testing.
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3
Permit & Repair
We pull the permit, then repair, reroute, or replace the failed gas line section.
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4
Pressure Test & Restore
The line must hold 10 PSI with no measurable drop before SDG&E restores your gas.
Gas Leak Repair Across San Diego County
Our licensed plumbers serve the city and the wider county.
Gas Safety Tips & Plumbing Guides
Learn more about gas safety, permits, and repair costs in San Diego.
Gas Leak Questions, Answered
Call us at (619) 637-5215 — we are happy to help.
What should I do right away if I smell gas?
Leave immediately without touching light switches, phones, or appliances. Get outside, call 911 and SDG&E's 24/7 line at 1-800-411-7343, and do not re-enter until cleared.
How do you find a gas leak?
We use combustible gas detectors, soap-bubble testing on exposed lines, and pressure-decay or isolation testing on hidden sections to pinpoint the exact fitting.
How much does gas leak repair cost in San Diego?
In 2026, an appliance flex connector runs $200 to $450, an exposed section $400 to $900, an in-wall repair $700 to $1,800, and an underground repair $1,200 to $3,500. Pressure testing alone is $200 to $400.
Do I need a permit and pressure test for gas work?
Yes. Gas work requires a licensed C-36 plumber and a City of San Diego permit, roughly $195, plus a 10 PSI pressure test with no measurable drop.
Think You Have a Gas Leak in San Diego?
Call A&A Plumbing for licensed gas leak repair with upfront pricing. If you smell gas, get outside and call 911 first.