Plumbing, Heating & Air Conditioning in Marathon

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Our service teams are a familiar presence navigating the steep grades and scenic overlooks that define the Marathon landscape. We recognize that the geography of the Big Rib River valley creates unique atmospheric demands, from the dense fog and humidity of the lowlands to the exposed, wind-swept ridges that test the insulation of your home. Whether we are parked near the local schools or assisting a homeowner along Highway 107, we bring a specialized understanding of how the Marathon County climate impacts local infrastructure. We have spent years fine-tuning the mechanical systems of this community, ensuring that families stay warm during the sub-zero deep freezes and refreshed during the peak of summer.

Get in touch with our team today to ensure your household systems are ready for the upcoming season.

Plumbing Services

Marathon residents often deal with unique water pressure challenges and mineral-rich groundwater that can lead to premature pipe wear. To keep your fixtures in top shape and your basement dry, we offer:

  • High-performance water softening system installation to neutralize the heavy mineral content found in local aquifers.
  • Professional drain cleaning to clear out years of buildup and prevent catastrophic backups.
  • Modern water heater replacement for energy-efficient, consistent hot water.
  • Reliable sump pumps to protect your foundation from the heavy spring runoff.
  • Advanced leak detection to pinpoint hidden drips behind walls or under slabs.
  • Kitchen and utility help, including garbage disposal repair and gas lines for new appliances.
  • Rapid frozen pipe repair to restore your water supply during the most brutal cold snaps.
  • Robust commercial plumbing for local businesses and agricultural operations.

Connect with our plumbers in Marathon today to maintain a high-functioning home.

Air Conditioning

When the summer heat settles over the valley, your home should be a sanctuary of cool air. We specialize in keeping Marathon households comfortable with efficient cooling solutions.

  • Fast AC repair for all major equipment brands to restore your comfort quickly.
  • Quality central AC installation designed for your home’s specific layout.
  • Seasonal AC maintenance to lower your energy bills and prevent mid-season breakdowns.
  • Specialized ductless AC service for targeted cooling in specific rooms.

Call our cooling team to schedule your seasonal tune-up today.

Heating Solutions

Winter in Marathon can be relentless, making a dependable heating system a necessity for your family’s safety. We provide robust heating solutions to keep the Wisconsin winter at bay.

  • Emergency furnace repair to restore your heat source when the mercury drops.
  • Modern heat pump solutions for high-efficiency temperature control throughout the year.
  • Specialized boiler repair and radiant heating installation for cozy, even warmth.
  • Intelligent thermostat installation to put precision climate control at your fingertips.
  • Comprehensive HVAC inspections to identify and resolve small issues before they become expensive failures.

Protect your home this winter by scheduling a heating check-up with our professionals.

Indoor Air Quality

Marathon homes are often sealed tight against the winter wind, which can lead to trapped pollutants and stagnant air. We offer the technology needed to keep your indoor environment healthy.

  • Deep duct cleaning to strip away allergens, dust, and dander.
  • Whole-home air purifiers and medical-grade HEPA filters for cleaner breathing.
  • Balanced moisture with whole-house dehumidifiers and whole-house humidifiers.

Start breathing easier by contacting our air quality specialists now.

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Why Choose Southport Plumbing, Heating & Cooling?

We have spent years building a reputation in Marathon for being the team that understands the specific needs of hilltop and valley homes.

  • Local technicians who are familiar with the specific building codes and challenges of Marathon County.
  • Service trucks that arrive fully equipped to handle most repairs on the first visit.
  • Honest, transparent pricing with no hidden fees or surprise charges.
  • A deep respect for your home and your schedule.

Partner with the technicians that Marathon neighbors rely on for total home comfort.

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.
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Expires: 11/30/2026
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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