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

    Kathleen Jalensky
    4 days ago
    Southport was so wonderful to deal with. I had a quick appointment and Justin was terrific. So professional and kind. Highly recommend them. Mrs Jalensky
    Chris Stemper
    4 days ago
    I’m very satisfied with my new air conditioner from Southport Home Services. From sales to installation they were professional and informative about all aspects of the work that would be done. The pricing was better than I expected. I’d definitely recommend them.
    Wally Perry
    5 days ago
    On time, friendly, knowledgeable...did a great job.
    Ned C
    5 days ago
    My service provider was outstanding!! Answering my questions and providing me with useful information and advice.
    saikat sengupta
    1 week ago
    Vincent Beyer is very professional and helped me to understand step by step about the issue and able to figure out the issue with my HVAC and able to fix the issue.
    Anthony Dolas
    1 week ago
    Justan was great! He explained exactly what he had to do and what it would cost for each step. When he found there was a shut off for that particular faucet he let me know and I didn’t pay to have one installed since it was already there. I appreciate the honesty and integrity! Was impressed with the service and signed up for a service plan with them that will bring in more savings for me. Thank you Justan and Southport Home Services!
    Tom Brandon
    1 week ago
    Jackson came and serviced our air conditioner on Wednesday, and once again he did an outstanding job. He was very thorough in both his work and explanation of what he did. Southport is in excellent hands if all of it’s employees work with the dedication that Jackson does.
    Mark Scalzo
    1 week ago
    The get there when they say they will, have parts available and get the job done. Very happy that they got my A/C working again before the holiday weekend!
    Julie Malmquist
    1 week ago
    Great people to work with! Quoted the job for 3 days and finished in just 2!!!
    Alexis Nilsson
    1 week ago
    Travis was very professional and knowledgeable and I will use them again when needed. All the guys were very good and everyone cleaned up afterwards.
    Dawn Cody
    2 weeks ago
    James was the technician who listened, investigated, and gave us several options to cure the issue that were dependent upon what would fit in the price range. Most importantly, James spent the time to explain everything in detail and made sure all questions were answered. This is the second time I’ve used SouthPort. They are the right choice!!
    Pete Carroll
    2 weeks ago
    Helped us on a weekend where we had no water. The tech was prompt, courteous and professional. He gave us some good options and went with a reasonable solution. We are very appreciative of the services we received.
    Roy Karpinsky
    2 weeks ago
    Friendly and thorough. Appreciated the job well done.
    Barb Carel
    3 weeks ago
    Good service and Joe was very polite.
    M Tros
    3 weeks ago
    I'm on the home maintenance program for plumbing and HVAC. I have been very happy with the service to date. There is always plenty of warning before they arrive and they do their business quickly, professionally, and efficiently. During my last visit they detected two faucet leaks which resulted in two new faucets (covered under lifetime warranty by the manufacturer).
    John Miecielica
    3 weeks ago
    Southport addressed all concerns and explained everything in detail before completing service. Ver professional. They were on time and cleaned up after themselves
    Greg Hayes
    3 weeks ago
    Technician, Marcus, was great. He was on time and very respectful and knowledgeable.
    Jeff Sterling
    3 weeks ago
    We had a new furnace installed by Southport Home Services and had an excellent experience from start to finish. Our salesman, Adam, was very knowledgeable, personable, and easy to work with. He answered all of our questions and made the process stress-free during an already stressful time. Our furnace broke, and the very next day the installation team was at our home replacing it. The staff was professional, respectful, and did a fantastic job. Everything was left spotless and looked great when they were done. We even felt completely comfortable leaving for the day while they worked in our home, which says a lot. We truly appreciate the quick turnaround, quality work, and great customer service. Highly recommend Southport Home Services!

    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!