Gas Leak Detection
Licensed gas line detection, repair, seismic valve installation, and safety testing for homes and businesses
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Gas Leak Detection & Repair
A gas leak is a serious safety emergency. If you smell gas, leave the building immediately and call 911 first. Then call us. Our licensed plumbers perform precise gas leak detection and repair, ensuring your home or business is safe before restoring service. We also install seismic shut-off valves and run new gas lines for appliances. Gas leaks are emergencies — our 24/7 team responds fast with the same advanced detection equipment we use for slab leaks. We serve Ontario, Pomona, Corona, Upland, Fontana, Rancho Cucamonga, West Covina, and Chino.
- ✓Electronic gas leak detection equipment
- ✓Gas line repair and re-piping
- ✓Pressure testing after repair
- ✓Seismic shut-off valve installation
- ✓Appliance gas line connections (BBQ, stove, dryer, fire pit)
- ✓Gas line installation for new appliances
What We Cover
Services We Provide
Leak Location
Using advanced electronic gas detectors, we pinpoint the exact location of gas leaks in your home's piping system.
Line Repair & Repiping
Once located, we repair or replace the damaged section of gas line to restore safe operation to your home.
Pressure Testing
After every repair, we perform a pressure test to verify the integrity of your entire gas line system before restoring service.
Recent Work
Recent Gas Line Work
Seismic Shut-Off Valve Installation
Installed a seismic gas shut-off valve as part of a home safety upgrade. The valve automatically shuts off gas flow during an earthquake, protecting the home from fire and gas leaks.
Gas Valve Replacement
Replaced an aging gas valve after detecting a slow leak during a routine inspection. New valve installed, pressure tested, and certified safe before restoring service.
Emergency Gas Line Repair
Emergency gas line repair after the homeowner detected a strong gas odor near their outdoor BBQ line. We located the leak, replaced the damaged section, and pressure tested the entire system.
Our Promise
Why Choose Regal?
Honest Pricing
Upfront, transparent quotes before any work begins. No hidden fees, no surprises — even in emergencies.
Fast Response
24/7 availability for emergencies. We arrive quickly and work efficiently to minimize damage.
Quality Workmanship
Every job backed by our commitment to premium craftsmanship and lasting results.
Explore
Other Services We Offer
Emergency Plumbing
Rapid-response emergency plumbing for Ontario, CA and surrounding cities - we’re on call around the clock.
Learn More →Drain Cleaning
Professional clearing of kitchen, bathroom, and main sewer line blockages.
Learn More →Sewer Line Repair
Camera inspection, trenchless repair, and full sewer line replacement.
Learn More →Water Heater Services
Installation and repair of tank, tankless, and heat pump water heaters.
Learn More →Slab Leak Detection
Electronic leak detection beneath concrete slabs with minimal disruption.
Learn More →Hydrojetting
High-pressure water jetting to scour pipe walls and restore full flow.
Learn More →Water Filtration
Whole-home softeners, reverse osmosis, and filtration systems installed.
Learn More →Pipe Repair
Expert pipe repair and replacement for copper, PVC, and galvanized systems.
Learn More →Commercial Plumbing
Full-service commercial plumbing for restaurants, apartments, HOAs, and businesses across Ontario & the Pomona Valley.
Learn More →Service Coverage
Cities We Serve
We provide fast, local plumbing service throughout the Inland Empire.
Emergency Protocol
What To Do If You Smell Gas
Leave Immediately
Do NOT turn on/off lights, appliances, or electronics. Get everyone out of the building and move away from the structure.
Call 911
Call 911 and SoCalGas at 1-800-427-2200 from outside the building. They will respond to secure the area and shut off gas if needed.
Call Regal Plumbing
Once safe, call us at (909) 600-4561. We respond 24/7 to locate the leak, make repairs, and pressure test your system before restoring gas.
Gas Line Services
Gas Line Services for Inland Empire Homeowners
Seismic shut-off valves are essential for Inland Empire homeowners. Southern California sits on several active fault lines, and a strong earthquake can rupture gas lines inside your walls. A seismic valve automatically shuts off gas flow when it detects seismic activity, preventing fires and explosions. California law requires them on new construction, but we recommend retrofitting older homes in Ontario, Pomona, Corona, and Upland as well.
New gas line installations are one of our most common services. Whether you're adding a gas BBQ grill, outdoor fire pit, pool heater, patio heater, gas dryer, or upgrading to a gas stove, we handle the entire process — running the line, making connections, pressure testing, and pulling permits. We install gas lines throughout Fontana, Rancho Cucamonga, West Covina, and Chino.
Gas leaks are emergencies and we treat them with the urgency they deserve. Our team is available 24/7 and uses electronic gas detection equipment to pinpoint leaks quickly and accurately — the same precision technology we use for slab leak detection.
KNOW THE SIGNS
Warning Signs of a Gas Leak in Your Home
Gas leaks don't always announce themselves with an obvious smell. Knowing what to look for can save lives. The most recognized warning sign is the rotten egg or sulfur odor that utility companies add to natural gas — but it's far from the only indicator. A hissing or whistling sound near gas lines, meters, or appliances often signals a pressurized leak. Outside your home, dead or dying vegetation near a buried gas line can point to an underground leak that's displacing oxygen in the soil.
Pay attention to how you feel, too. Dizziness, nausea, or persistent headaches when you're indoors could mean low-level gas exposure. An unexplained spike in your gas bill sometimes reveals a slow leak that's been going unnoticed for weeks. And visible damage or corrosion on gas line connections, especially in older homes, is a red flag that shouldn't be ignored. If you notice any of these signs, professional gas leak detection in Ontario, CA is just a phone call away.
EMERGENCY ACTION
What To Do If You Smell Gas — Emergency Steps
The moment you detect the smell of gas, your first instinct might be to flip a light switch or grab your phone — don't. Any electrical spark, no matter how small, can ignite gas that's accumulated in an enclosed space. Do not turn on or off any switches, appliances, or electronics. Do not light a match or candle. Leave everything exactly as it is.
Evacuate immediately. Get every person and pet out of the building as quickly as possible, leaving doors open as you go to help ventilate. Move at least 100 feet away from the structure before doing anything else. Once you're at a safe distance, call 911 from your cell phone or a neighbor's phone to report the suspected leak. After emergency services have been notified, call Regal Plumbing at (909) 600-4561. Our 24/7 emergency team will respond to locate the leak, complete the repair, and pressure test your system before gas is restored.
OUR PROCESS
Our Gas Leak Detection Process
Every gas call starts with an initial safety assessment. Our technician evaluates the area for immediate hazards, checks ventilation, and confirms it's safe to proceed with detection. If the space isn't safe, we coordinate with the gas company before entering.
Next, we use electronic combustible gas detectors to sweep every gas line, fitting, valve, and appliance connection in the building. These instruments detect gas concentrations far below what the human nose can sense, catching even slow or hidden leaks. Once we identify elevated readings, we pinpoint the exact leak location so repairs are targeted and efficient — no guesswork, no unnecessary demolition.
After the repair is complete, we perform a full pressure test on the gas line system. We pressurize the lines and monitor for any drop, confirming that every connection holds before gas service is restored. This is the same thorough approach we bring to gas line repair in Pomona, CA and every city we serve.
SERVICE AREA
Gas Leak Detection Across Our Service Area
Gas leaks don't wait for business hours, and neither do we. Regal Plumbing responds to gas calls as emergencies 24 hours a day, 7 days a week across our entire service area. Whether you're in Ontario, Rancho Cucamonga, or Fontana, our team is ready to respond with the equipment and expertise to handle any gas emergency.
We provide gas leak detection in Fontana, CA as well as Pomona, Upland, Chino, Corona, and West Covina — plus dozens of surrounding communities. From seismic valve installations to full gas line replacements, we bring the same licensed, safety-first approach to every job. If you suspect a gas leak or need gas line service, contact us today or call (909) 600-4561.
Common Questions
Gas Leak Detection FAQs
Ask about our current specials when you call.
Gas Leak? Safety First. Then Call Us
If you smell gas, evacuate and call 911. Then call us for professional detection and repair.
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