Residential Services

Gas Line Repair & Installation in Madison & Greater Wisconsin

Call Today... Relax Tonight

4.9 Google Rated

Home » Plumbing » Gas Lines

Gas lines power essential systems in your home, including your furnace, water heater, stove, and other appliances. When a line is damaged, leaking, or improperly sized, it can affect both performance and safety throughout your entire system.

Southport Plumbing, Heating, and Cooling provides gas line repair and installation in Madison and Greater Wisconsin. We handle everything from new gas line installations to extensions and targeted repairs, with a focus on proper sizing, routing, and pressure control to ensure your system operates reliably.

A technician checking the gas line in a home inspection.

Gas Line Installation and Repair

Gas line work is not just about connecting pipes. It requires understanding how fuel moves through your system and how each appliance draws from it.

We provide gas line work for both new setups and existing systems, with service tied directly to how your home uses gas:

  • Install new gas lines when adding appliances like stoves, water heaters, or furnaces

  • Extend existing lines to support fireplaces, dryers, or outdoor equipment

  • Repair gas leaks when pressure drops or connection issues appear

  • Replace aging or damaged piping that no longer supports reliable operation

  • Upgrade routing and connections to meet current code and improve system performance

What Happens During Gas Line Service

Our first priority is to understand how your system is currently performing and where issues may exist.

Every service begins with evaluating how your gas system is currently performing and how it needs to support your home.

  • Inspect existing gas lines, fittings, and appliance connections

  • Test system pressure to identify leaks or inconsistencies

  • Evaluate pipe sizing and routing based on appliance demand

  • Install or repair piping and secure all connections

  • Perform final pressure testing to confirm the system is sealed and operating correctly

This process ensures the system is not only repaired, but also balanced to deliver consistent gas flow across all connected equipment.

Signs You May Need Gas Line Repair

Gas line problems are not always obvious, but there are clear indicators that something is off.

Gas line issues often show up through system performance changes or environmental signs:

  • Rotten egg odor near appliances or piping

  • Hissing sounds near gas lines

  • Visible corrosion or damage on exposed pipes

  • Dead or discolored vegetation near buried lines

  • Appliances not operating correctly or consistently

What to Do if You Suspect a Gas Leak

If you suspect a gas leak, leave the home immediately and avoid using electrical switches or devices. Contact your gas provider or emergency services, then arrange for professional gas line repair once the situation is safe.

Schedule Service TODAY In Minutes!

Why Choose Southport Plumbing, Heating, and Cooling

Our team handles residential gas line systems, focusing on proper installation and long-term performance.

  • Experience working with a wide range of gas appliances and system layouts

  • Code-compliant installation and repair practices

  • Thorough pressure testing and leak detection

  • Clear recommendations based on your system’s needs

Southport logo with blue 'SOUTHPORT' wordmark and orange 'PLUMBING • HEATING • COOLING' tagline.

$259

Furnace + Plumbing Inspection Bundle 
Offer cannot be combined with any other promotions, discounts, or special offers. Terms and conditions may apply.
•
Expires: 11/30/2026
Send Us A Message
Name(Required)
Address
FAQ'S

Expert Answers To Your Service Questions

Have Another Question?
Feel free to contact us and we can assist you with your request.

Read About Our Customers’ Recent Experiences

Eric Hensley
4 days ago
I had a boiler system installed by Southport and everyone I interacted with was fantastic! After several quotes I selected them because I thought the company had a lot of integrity. I first got a quote from Caleb who was most professional, walking me through all the options they had for me and being very reasonable on the pricing. They scheduled the installation within a week and, on that day, the technicians Ryan and Jacob were excellent and very hard workers. I appreciated that they were very careful inside the house, putting shoe protectors while upstairs and overall being very respectful. They stayed until the job was done and my heat was restored. I would highly recommend Southport if you need a new boiler installation or and work or maintenance on your boiler, home heat, or water heating system.
Dave Frook
5 days ago
Justin did a great job explaining everything to us. He is very knowledgeable.
Mario Maritato
5 days ago
Timely, professional and friendly service.
David Geertsen
5 days ago
Southport did a good job, Justin was professional, thorough, did a great job !!
Darlene Severson
6 days ago
Thank you for sending Andrew Wenk to test our furnace. He could answer our questions clearly and tested all the important components and measured various pressures, temperatures, speeds, and other technical factors. He gave us 3 estimates for replacing parts that are needed due to age of the furnace. Andrew was pleasant and respectful to us.
JULIE GRIMM
7 days ago
Great technician. Grest communication and friendly. Jacob.
chris kwong
1 week ago
Jacob came over to install a new heat pump and do an annual HVAC maintenance check for winter. Appreciate how Jacob was friendly, communicative on progress/steps/etc, and open for questions!
Jackson ellis
1 week ago
Vincent came and assessed my furnace and was very helpful with diagnosing problems with it. Would definitely recommend them for any needs
Jackie Lambert
1 week ago
Fast and friendly. Thanks for getting my heat back on!
Karen Parrillo
1 week ago
Blake was very courteous and efficient in disconnecting our old dryer gas supply. We appreciate the quick response.
Diane Bilak
1 week ago
Nick and Dylan was very professional, respectful and knowledgeable and pleasant. Dylan explained everything to me in an easy way to understand. I would definitely use Southport again for my heating/air conditioning
needs.
Dan Oleary
2 weeks ago
Nathan was very detailed and explained things very well.
Sharon Edic
2 weeks ago
Dispatch team was professional and service technician Quinn was super! He was very nice, explained everything in detail, answered all our questions and worked quickly. Highly recommend!
Brittany Urban
2 weeks ago
Riley was amazing! He kept me updated throughout the process because we were not home. He was very professional and very hard working!!
frannie lynne
2 weeks ago
Vincent arrived on time, explained all info clearly and with detail, was courteous. I learned interesting and important facts about the furnace and truly appreciate his taking the time to educate my husband and me.
Denise Stanford
2 weeks ago
Southport was extremely helpful and had an appointment the day after I called to inquire about their maintenance plans.

Luke was great. He explained what he found during routine furnace maintenance, things that were working well and things to watch for in the future. Best experience I have had in a long time.
Karyn S
2 weeks ago
I had a wonderful experience with Southport! Justin and Phil were both fantastic to work with. Justin was incredibly friendly, knowledgeable, and helpful throughout the entire process. He made everything easy and stress-free and was a pleasure to work with!
Phil was equally wonderful! He was professional and thorough. I really appreciated his attention to detail and the care he put into his work. Both Justin and Phil went above and beyond to provide excellent customer service.
I highly recommend Southport and especially Justin and Phil! Thank you both for such a positive experience!
Jim Sheehan
2 weeks ago
Southport’s Technician , Phil Lloyd, is a true asset to his organization! My wife, Karyn and I have had many contractors come through our house over the years and I would put Southport at the very top of our service partners. They are knowledgeable, reasonable, and most importantly trustworthy. Phil Lloyd took the time to share, in layman’s terms, the root cause of our problem and a remedy that would bring our system back up and running; peace of mind to our family. I would highly recommend Southport, and would give Phil Lloyd a 10 out of 10 related to Service, quality, and most important trust. Southport is fair on cost,I plan on partnering with Southport for many years to come. Jim Sheehan