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Top-Rated Gas piping pros in Ontario - Updated Nov 2026

Avatar for J I G Plumbing
J I G Plumbing
4.9(
98
)
Gas Piping

Serving Ontario, CA and surrounding areas

Approved

In business since 2011

Free estimates

Emergency services offered

"What do you do when the gas company turns off your gas due to a leak? You would want a licensed plumbing company that is: quick to respond, has a free estimate, comes out on a Saturday, knowledgeable, on-time, efficient, quality work, courteous, and above all else,...integrity. Jason and his team at J I G Plumbing are all that! We were given an initial estimate, but as the trenching started, he informed us that the repair would not be as extensive as previously thought. He re-calculated the cost, saving us considerable money. Jason and his team patiently answered all our questions and informed us of their progress. Jason also provided photos of damaged areas and the finished repair. The repair was completed professionally and efficiently, and the gas company came to inspect/turn the gas on the same day. We are happy to have J I G Plumbing as our "go-to" for all our plumbing needs in the future!"
Completed Install
Preparing new install
Completed Install
Completed Install
Completed Install

+8

47 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Western Rooter & Plumbing
Western Rooter & Plumbing
4.8(
172
)
Gas Piping

Serving Ontario, CA and surrounding areas

Approved

In business since 1981

Free estimates

Emergency services offered

"A first time apartment owner and landlord, I needed major plumbing services within the first 6 months of ownership. The first time was a series of gas leaks which were quickly repaired by Western Rooter. The second time was the significant work of adding 2 gas meters and the requisite task of re-routing/adding gas piping. I simply cannot recommend Daniel Westereng and Western Rooter enough. Although the owner John came out to assist in the final bid, Daniel and I worked consistently with SoCal Gas to coordinate the improvements. Daniel was quick to return texts, calls, e-mails and worked diligently with all the parties to get the job done. If you need a plumber, save time and call Western Rooter. Tell them to send Daniel Westereng and he will do a fantastic job!"
Ruben installs a new drainage system under a customers home. Working in a crawl space is rough, but we do what is needed.
Backing up? Got roots? Blast those roots out with a Hydro Jetter! We use a wart hog nozzle that combines controlled rotation with a unique 8 jet cutting configuration optimized for removing roots. It’s better with a jetter! Call us! We got this! ??
Sewer Line Camera
No drain clog too big or small, Western Rooter covers them all!
Justin clearing a Kitchen sink back-up after the Memorial holiday.
HALO 5 whole house water filtration system.

+542

Response time12 hrs
Response rate100%
4 neighbors recently requested a quote
Avatar for SoCal Plumbing & Rooter, Inc.
SoCal Plumbing & Rooter, Inc.
4.7(
286
)
Gas Piping

Serving Ontario, CA and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

"They were amazing. Very professional and explained everything they did. They also replaced pipes under the kitchen sink and replaced the faucet. The work was meticulous, the work ethic was atop notch. Thank you to Shandy and crew. Would highly recommend and I will certainly use again."
Response time4 hrs
13 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Service Flow Plumbing
Service Flow Plumbing
5.0(
23
)
Gas Piping

Serving Ontario, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Free estimates

Emergency services offered

"⭐⭐⭐⭐⭐ Service Flow did an excellent job replacing my old water heater and piping everything in with copper. Their professionalism, workmanship, and clear communication throughout the entire process really stood out. The job was completed efficiently and to a very high standard. I’m very happy with the results, would highly recommend Service Flow, and will definitely be using them again in the future."
Sewer Main Valve
Sewer Main Valve
Sewer Main Valve
Sewer Main Valve
Sewer Main Valve

+81

Response time8 hrs
Response rate98%
19 neighbors recently requested a quote
Avatar for GG's Plumbing, Inc.
GG's Plumbing, Inc.
5.0(
12
)
Gas Piping

Serving Ontario, CA and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

"We had a great experience with GG’s Plumbing at our cabin in Lake Arrowhead. We originally hired them to install a whole-house water shut-off system, and the job was done quickly and professionally. While they were there, the team noticed that our pipes weren’t properly insulated — something that can obviously become a real issue in the mountains during winter. What I appreciated most was their approach: they didn’t pressure us at all. They simply explained the risk, gave us the option to fix it now or later, and let us decide. That kind of honesty goes a long way. We chose to go ahead and have the insulation done, and I’m glad we did. Their team was easy to work with, the communication (mostly through text) was fast and clear, and everything was handled smoothly. Reliable, knowledgeable, and straightforward — I would absolutely recommend GG’s Plumbing."
Water repipe
Water repipe
Avatar for PRO FLOW PLUMBING AND ROOTER
PRO FLOW PLUMBING AND ROOTER
5.0(
11
)
Gas Piping

Serving Ontario, CA and surrounding areas

Approved

In business since 2010

Emergency services offered

Warranties offered

"Wanna give a huge shout out to Pro Flow Plumbing for sending there best workers to come and replace my water heater they have the best pricing for quality parts and water heater, love how they are very honest I highly recommend others to give them a call won?t regret that call."
Drain repair
Drain repair
Drain repair
Drain repair
Drain repair

+6

11 neighbors recently requested a quote
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FAQs for gas piping projects in Ontario, CA

Plumbers with proper licensing and credentials install and relocate gas lines. When hiring a professional, verify they have experience with gas systems and all required certifications. Some homeowners choose to work with plumbers specializing in natural gas installations, as they have extensive experience with similar projects and understand the safety requirements.

The timeline for gas line relocation varies based on project complexity, permit processing, and inspection scheduling. The physical labor takes a few hours to one day, depending on the line length. However, the actual installation work represents only part of the overall project timeline. Your contractor should provide a specific timeframe based on your circumstances and local permitting requirements.

Your gas supply must be shut off during the relocation process. This safety measure prevents gas leaks while connections are being modified. Plan for this temporary service interruption by making alternative arrangements for cooking, heating, or other gas-dependent systems in your home. The shut-off generally only lasts for a portion of the work, often a few hours.

Relocating gas lines to connect new appliances is a common reason for this type of project. Whether you're installing a gas stove, fireplace, dryer, or outdoor grill, a professional can determine the best route for extending your existing gas system. The cost will depend on the distance between your current gas line and the new appliance location.

Gas line work is not suitable for DIY projects. Natural gas is highly flammable and potentially lethal if not handled correctly. Gas leaks can be difficult to detect without specialized equipment. Professional plumbers have the proper training, tools, and experience to safely relocate gas lines while ensuring compliance with local building codes and safety standards.

The Ontario, CA homeowners’ guide to gas pipings

From average costs to expert advice, get all the answers you need to get your job done.