Commercial HVAC Services in Greater Wisconsin

Dependable by Design

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Commercial HVAC systems require precise design, installation, and ongoing service to maintain performance, efficiency, and code compliance. Southport Mechanical provides commercial HVAC solutions across Madison and Greater Wisconsin, supporting projects through system design, construction, and long-term service.

Our team includes engineers, fabricators, and skilled tradespeople who work together to deliver HVAC infrastructure that meets operational demands. Each project is approached with a focus on performance, scalability, and compliance with commercial standards.

Request a bid to connect with our commercial HVAC team and discuss your project requirements.

Commercial HVAC systems on a commercial rooftop.

Commercial HVAC Services

Southport Mechanical delivers comprehensive HVAC services designed to support commercial equipment and infrastructure at every stage of their lifecycle.

System Design and Engineering

  • Load calculations to match capacity with building demand
  • System layout and planning for efficient airflow and distribution
  • Code compliance review to meet local and regional requirements

Installation and Construction

  • Rooftop unit installation and large-scale equipment integration
  • Ventilation system installation to support indoor air distribution
  • Ductwork coordination with the overall mechanical layout

Repair and Retrofit

  • Performance diagnostics to identify inefficiencies
  • Equipment replacement and upgrades for aging infrastructure
  • Retrofit solutions to improve existing performance

Preventative Maintenance

  • Scheduled inspections to maintain performance
  • Adjustments and optimization to improve efficiency
  • Long-term maintenance planning to extend equipment life

Commercial HVAC Systems We Work With

Southport Mechanical works with a range of commercial HVAC equipment designed for different building types and operational requirements.

  • Rooftop units (RTUs) for centralized heating and cooling
  • Industrial heat pump systems for efficient temperature control
  • Geothermal HVAC systems for energy-conscious applications
  • Ventilation and air distribution systems to support airflow and indoor conditions

Equipment selection and configuration are based on building size, usage demands, and integration requirements.

In-House Fabrication and Mechanical Capabilities

Southport Mechanical supports commercial HVAC projects with in-house fabrication and mechanical expertise.

  • Sheet metal fabrication for custom ductwork and components
  • Ductwork prefabrication to improve installation efficiency
  • Process piping capabilities for specialized applications
  • In-house welding to support mechanical system construction

These capabilities allow greater control over quality, installation timelines, and overall project coordination.

Full Lifecycle HVAC Support

Our team supports commercial HVAC infrastructure throughout the entire project lifecycle.

  • Design-build projects with integrated planning and execution
  • New construction systems built to meet project specifications
  • Retrofits and upgrades to improve performance
  • Ongoing service and maintenance to support long-term operation

This approach ensures consistent performance from initial installation through long-term operation.

Commercial HVAC Applications

Southport Mechanical provides HVAC solutions across a range of commercial environments.

  • Commercial buildings, including office and retail spaces
  • Industrial facilities with complex requirements
  • Municipal projects requiring code-driven design
  • Multi-family properties with large-scale demands

Each application requires a tailored approach to design, installation, and service.

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Why Choose Southport Mechanical

Southport Mechanical brings the experience and capabilities required to support commercial HVAC infrastructure at scale.

  • Integrated engineering and trades expertise across all project phases
  • Strong knowledge of codes and compliance requirements
  • In-house fabrication capabilities to support design and installation
  • Scalable workforce equipped for complex commercial projects

Our team focuses on delivering HVAC solutions that perform reliably and meet the demands of commercial environments.

Industries We Serve
Industrial
Manufacturing Facilities
Educational Facilities
Government Facilities
Healthcare Facilities
Nursing/Assisted Living Facilities
Multi Family and Hotels
Business and Retail Facilities
Warehousing and Storage Facilities
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Our Completed Projects

Sun Prairie Public Library

Sun Prairie Public Library in Sun Prairie Wisconsin. We are currently installing the plumbing and HVAC of a renovation and a 25,000 square foot addition to the existing library. The renovation portion of the job is projected to begin summer of 2025.

Lake View Technology Academy

We completed the HVAC install of this brand new 48,000 square foot school that specializes in STEM fields and trades education.  We prefabricated the majority of the ductwork as well as the controls for the VAV boxes on this job.

Woodman’s Racine

Woodman’s Racine in Racine Wisconsin.  We are currently installing the HVAC for a brand new 250,000 square foot Woodman’s going up in Racine, Wisconsin. We prefabricated both the spiral and rectangular ductwork.

    FAQ'S

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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!