Gas Leak Detection & Repair in San Bruno, CA

A gas leak is the one home emergency where speed and precision both matter. Our gas leak detection and repair service in San Bruno, CA finds the exact source of a leak — often without opening walls — repairs it to code, pressure-tests the whole system, and gets your gas safely back on.

If you smell gas right now: leave the house, don’t touch switches or phones indoors, and call 911 and your gas utility from outside. Once the property is cleared, call us at (833) 713-2101 — suspected leaks jump to the front of our schedule, day or night.

Signs you may have a gas leak

Natural gas is odorless, so utilities add mercaptan — the rotten-egg smell — as a warning. But not every leak announces itself loudly. Watch for:

• Rotten-egg or sulfur odor, especially near appliances, the meter, or in the yard along the service line route
• Hissing or whistling near gas piping or appliances
• Dead or dying vegetation in an otherwise healthy patch of lawn — leaking gas displaces oxygen in soil
• Pilot lights that won’t stay lit, or burners with weak, yellow, flickering flames instead of steady blue
• Unexplained physical symptoms — headaches, dizziness, or nausea that ease when you leave the house
• A gas bill that climbs with no change in usage

Any one of these deserves a professional check. Our detailed guide on early warning signs of a gas leak walks through what homeowners can safely observe before we arrive.

How electronic leak detection works

The old approach was soap bubbles and guesswork — opening wall after wall hoping to stumble onto the leak. We work differently:

1. System isolation — we segment your gas piping so we can test individual runs instead of the whole house at once.
2. Electronic detection — a calibrated combustible-gas detector (“sniffer”) samples the air around every accessible joint, valve, and fitting, locating leaks down to trace concentrations.
3. Pressure testing — the isolated section is pressurized and monitored. A dropping gauge confirms a leak; a steady gauge clears the section.
4. Pinpoint location — combining detector readings with pressure data, we narrow the leak to a specific fitting or pipe section before any drywall comes off.

This methodical process is why most of our leak calls end with one small, precise opening instead of exploratory demolition.

The repair: what happens after we find it

Once located, the repair depends on what failed. A leaking union or valve gets replaced with new, properly rated components. A corroded section of steel pipe gets cut out and replaced — black iron rethreaded in place, or CSST terminations where flexibility helps. Flex connectors past their service life get swapped for new rated connectors.

Then the critical part: we pressure-test again. The repaired system must hold pressure for the full test duration. Only then do we restore service, relight appliances, and verify operation. If the utility red-tagged your meter, we coordinate the re-inspection so your gas comes back on without a second round of scheduling headaches.

When a leak means a bigger problem

Sometimes one leak is a symptom, not the whole story. During detection we often find the conditions behind it — widespread corrosion on aging steel, multiple weeping joints, or pipe routed where it never should have been. In those cases we’ll show you exactly what we found and lay out both paths: targeted repair now, or full replacement that solves the underlying problem. The decision framework in our repair vs. replacement guide explains how we think through that call with you.

San Bruno’s housing tells us where to look first: 1940s–50s steel lines in Mills Park and Rollingwood, hillside runs in Crestmoor and Portola Highlands stressed by decades of soil movement, bay-side moisture working on Belle Air piping. Local pattern recognition is half of fast detection.

Don’t wait on a suspected leak. Call (833) 713-2101 now — our emergency line is answered 24/7, and a local technician will be dispatched immediately.