4.9/5 — 2,000+ Five-Star Reviews
Gas Line Repair & Installation
Bay Area's #1 Choice
Licensed execution of gas piping projects, from emergency leak repair to new appliance line extensions.
- 25+ Years
- Licensed & Insured
- 24/7 Emergency
- No hidden costs
- Same-day service
- Fully licensed and insured
- 6000+ completed jobs
Google Rating
5
.9★
Five-Star Reviews
1900
+
4.9/5 Rating
2,000+ Reviews
Licensed & Insured
CA Licensed
Same-Day Service
24/7 Emergency
25+ Years
Bay Area Experts
6,000+
Jobs Completed
Simple Process
How It Works
1
Call Us 24/7
Reach us anytime at
(408) 617-8871.
2
Same-Day Dispatch
A licensed technician arrives at your home, often same day.
3
Diagnose & Fix
Upfront pricing before work begins. No hidden fees, ever.
4
100% Satisfaction
We stand behind every job with our satisfaction guarantee.
Professional Gas Line Repair & Installation Services
Our licensed technicians provide safe and reliable gas line repair and installation services tailored to your home’s needs. With over 25 years of experience, we deliver precise workmanship and dependable results you can trust.
Whether you need a new gas line installed, a leak repaired, or an upgrade to support new appliances, our team is ready to help. We use advanced equipment and follow strict safety standards and industry best practices to ensure every job is completed accurately and securely.
All work is backed by our satisfaction guarantee and warranty coverage. We’re also committed to transparent, upfront pricing — so you’ll always know the cost before any work begins, with no hidden fees.
100% Satisfaction Guarantee
If you're not completely satisfied with our work, we'll come back and make it right — free of charge. That's our promise to every customer.
Signs You Need Gas Line Repair & Installation
- The smell of "rotten eggs" near appliances
- Hissing sounds coming from gas connections
- Adding a new gas range, dryer, or outdoor BBQ
- Dead or yellow patches in the grass over the gas line
- Corroded or brittle flexible gas connectors
Why Choose United HVAC
- 25 years of experience
- Same-day service
- 1+ year warranty
- 6000+ completed jobs
- 0% interest financing and discounts
- Fully licensed and insured
- Well reviewed and highly trusted
- No hidden costs
- We work 365 days a year
Got Questions?
Frequently Asked Questions
How much does it cost to repair or install a gas line in 2026?
The labor and materials for a standard gas line installation in California typically range from $500 to $2,000. Repairing a minor leak at an appliance junction usually costs between $150 and $300, while fixing a buried line or an underground leak can exceed $1,500 due to excavation and pressure testing requirements.
What are the signs of a gas leak in my home?
The most immediate sign is a "rotten egg" smell, which is an odorant called mercaptan added to natural gas. Other indicators include a faint hissing sound near pipes, dead or yellowing patches in your lawn over the gas line, or a sudden, unexplained increase in your monthly gas bill.
Is it legal to repair my own gas lines in California?
No. California building codes mandate that all gas line work must be performed by a licensed professional. DIY gas work is illegal, poses a significant explosion risk, and can lead to denied insurance claims or city code violations.
How long do residential gas pipes typically last?
The lifespan depends on the material. Black iron pipes can last 50 to 100 years if kept dry, while galvanized steel usually lasts 40 to 50 years before the zinc coating fails. If your home is over 40 years old, we recommend an annual inspection to check for systemic corrosion or brittle fittings.
Do I need a permit for a small gas line extension to a BBQ or stove?
Yes. In California, any modification to a gas system requires a permit from your local building department. This ensures the work is pressure-tested and inspected for safety. Without a permit, you may face fines or be forced to remove the installation during a future home sale.
What is a gas pressure test and why is it mandatory?
A pressure test involves sealing the gas system and pumping it with air to a specific PSI (usually 1.5 times the operating pressure). If the pressure gauge drops over a set period, it confirms a leak exists. This is a non-negotiable safety step required by law before any new or repaired gas line can be put into service.
Can tree roots damage underground gas lines?
Yes. While gas lines are typically made of durable materials like HDPE (plastic) or coated steel for underground use, shifting soil and invasive tree roots can put enough pressure on the pipes to cause cracks or joint separations. If you have large trees near your utility corridor, a periodic inspection is advised.
What is the difference between CSST and rigid gas piping?
Rigid black iron pipe is the traditional standard for main lines, while Corrugated Stainless Steel Tubing (CSST) is flexible and easier to run through walls and around corners. CSST is highly efficient for retrofits but must be properly bonded and grounded to prevent damage from electrical surges or lightning strikes.
Why should I install a seismic gas shut-off valve?
In seismic zones like the Bay Area, these valves are designed to automatically shut off the gas flow during a significant earthquake. This prevents fires and explosions caused by ruptured lines. Many local municipalities and insurance companies now require or highly recommend these valves for residential properties.
What should I do immediately if I smell gas?
Evacuate the premises immediately. Do not use your phone, flip any light switches, or start a car, as any spark can ignite the gas. Once you are at a safe distance, call 911 or your gas utility provider. After the utility has cleared the area, we can provide 24/7 emergency support to locate and repair the leak.
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Kitchen Sink Installation
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Shower Repair & Replacement
Shower repair and replacement services including valves, heads, and enclosures.
Toilet Installation & Repair
Toilet installation, repair, and replacement for all makes and models.
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Serving the Bay Area
Gas Line Repair & Installation Available In
We proudly serve homeowners across the entire Bay Area
Don’t see your city? Call (408) 617-8871 to check availability.