Residential Services

Gas Line Repair & Installation in Madison & Greater Wisconsin

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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.

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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

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Read About Our Customers’ Recent Experiences

Brian Childers
22 hours ago
I have a Shield maintenance agreement with Southport Plumbing Heading and Cooling.

The value for the plan is fantastic! They come out and help maintain your plumbing, heating and cooling systems. Jacob from the HVAC side has come out to my home and has done an excellent job of keeping me aware of what is working well, and what I may need to keep an eye on.

Justan and Nathan from the plumbing side have also come out to my house and did the regular yearly maintenance. They too, do an awesome job of keeping me updated on how the plumbing is within my house.

I also was alerted to the battery being bad for my sump pump backup system and Justan and Nathan installed a new sump pump and a new backup system as well. The timing was impeccable as we faced a power loss for around 24 hours, and the battery was fully charged and the backup sump pump worked while we didn't have power! It was better paying for the backup system than a repair bill for a flooded basement.

To round it out, the office staff, Sarah did a great job helping me coordinate not only the visits for the maintenance, but also helped facilitate the installation of the plumbing work.

They keep giving great reasons why I'm a long term Southport Plumbing, Heating & Cooling customer!

Thank you!
Kate Cahill
2 days ago
Highly recommend for your HVAC needs! The salesman that came out to do the quote was professional and informative. The installers were incredible! Everyone was on time and on budget. Highly recommend! 10 out of 10 stars
sonam raptenpa
3 days ago
I am very satisfied with their service and products, they really did good job for installing new A/C this hot summer. The cost was reasonable and I am very happy with it, so thank you so much
Carli Brunner
5 days ago
I recently had a technician from Southport come out to provide a quote for a new furnace and air conditioning unit, and I was very impressed with the experience. They did a thorough inspection to determine the best fit for my property rather than offering a one-size-fits-all solution.

Caleb, the representative, was knowledgeable and took the time to explain all of my options. He educated me throughout the entire process, and made sure I understood the differences between each system so I could make an informed decision. The customer service was truly superb.

I would definitely recommend Southport to anyone looking for an honest, professional HVAC company. They primarily carry Carrier equipment but they do other options exclusively made by Carrier for Southport as well.
Jeff Knuth
5 days ago
Your team did a great job. They were very professional and friendly.
Stacy Ellsworth
6 days ago
Excellent customer Service! The technicians were professional, and highly experienced! They were able to come out the same day I called to give an estimate and do the actual install installations.
Shelby Williamson
6 days ago
Technician Anthony was professional, friendly and knowledgeable. I learned a lot during my scheduled visit and he fixed some minor nagging problems with noisy vents in my home. Appointment ended with a good plan going forward outlined. Thanks for the help!
Phil Tobin
7 days ago
Good discussion, options to consider, and a good, thorough installation
Jeanine Hanson Lewis
1 week ago
Tommy and Blake were so helpful. They went out of their way to explain everything throughly and left me with clear documentation on my issue as well as a full Plumbing System Evaluation. I received 3 different price structures and ways to save money. I would highly recommend this company! Thank you ever so much!
Lisa Moreno
1 week ago
Great service. Andrew was wonderful and made sure the installation was to his satisfaction by calling the vendor to ensure the faucet was seating correctly and got replacement parts shipped.
Susan Ventura
1 week ago
Very fast response, thorough, and very professional! Impressive service all around!
Brett Trulson
1 week ago
Technician diagnosed unit and found the problem within minutes. Very professional, highly recommended.
Beth Bourne
1 week ago
If you want WOW service, contact Southport! From my first call to schedule an emergency air conditioner unit replacement to the installation, Southport was professional, prompt, and priced fairly. (I originally called another company who was the complete opposite--Southport, however, fixed the issue and made sure I was completely satisfied!)
Nathan McCollough
1 week ago
Vincent good dude. Good work.
Ken Slagg
2 weeks ago
Going to get new central air. Caleb was absolutely great.
Sherley Benicek
2 weeks ago
Was having issues with my Generic generator trying to start up and misfiring. Smelled gas. Long story short HVAC team came out and tested all of the gas pipes. Everything tested good..
Cathy Koshak
2 weeks ago
My entire central air system needed to be replaced. The team that came out was very professional, thorough and knowledgeable. I had a very short timeframe to get this done and they accommodated everything I needed. I would definitely call them again for any of my future needs.
John
2 weeks ago
Very fast responses and action plans

Schedule Service For Your Home Or Business Today!

Are you looking for great HVAC and plumbing services? Our Southport team serves you with quality plumbing, heating and cooling services in Madison and the surrounding areas. Contact us today!