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Commercial Wholesale Ductwork & Fabrication in Greater Wisconsin
Dependable by Design
4.8 Google Rated
Commercial buildings depend on mechanical systems to support daily operations, meet airflow requirements, and ensure long-term performance. Southport Mechanical provides commercial ductwork fabrication and supply built to meet code requirements and project demands across Madison and Greater Wisconsin.
Our team supports projects at every stage, including duct system design coordination, in-house fabrication, installation support, and ongoing system evaluation. New construction, retrofit, and modification projects are handled with a focus on accuracy, efficiency, and system performance.
Request a bid to connect with our commercial team and discuss your project requirements.
Ductwork Fabrication and Supply
Southport Mechanical produces custom ductwork and fittings for commercial HVAC systems, supporting contractors and project teams with accurate, ready-to-install components.
- Rectangular and spiral ductwork
- Custom duct fittings and transitions
- Multiple material types and gauge options
- Prefabricated duct sections for efficient installation
All fabrication is completed in-house to maintain quality control, support project timelines, and ensure consistency across system components.
Commercial Ductwork Services
Southport Mechanical supports ductwork systems across fabrication, installation, and performance evaluation.
Fabrication & Prefabrication
- Custom duct production based on system design
- Prefabricated sections to reduce field installation time
Fabrication processes are structured to improve installation efficiency and maintain consistent build quality.
Installation Support
- Coordination with HVAC system layouts and equipment
- Integration with rooftop units and ventilation systems
Ductwork is aligned with system requirements to support proper airflow and performance.
Repair & Modification
- Ductwork adjustments for system upgrades or layout changes
- Replacement of damaged or leaking sections
Modifications are completed to maintain system integrity and airflow performance.
Inspection & Performance Checks
- Airflow evaluation and system balancing support
- Identification of leaks, restrictions, or sizing issues
System checks focus on maintaining proper airflow and overall performance.
Ductwork Capabilities
Southport Mechanical delivers ductwork systems built to meet the demands of commercial and industrial environments.
- Sheet metal fabrication for commercial HVAC systems
- Custom duct sizing and layout coordination
- Integration with mechanical system design
- Support for new construction and retrofit projects
Each system is developed to align with building requirements, airflow demands, and overall system performance goals.
Full Lifecycle Ductwork Support
Southport Mechanical supports ductwork systems across all phases of operation.
- Fabrication for new construction projects
- Ductwork replacement and retrofit
- System modifications for equipment upgrades
- Ongoing inspection and performance evaluation
This approach supports consistent airflow performance and system reliability across the life of the building.
Commercial Ductwork Applications
Our team works across a range of commercial and industrial environments.
- Commercial buildings
- Industrial facilities
- Municipal projects
- Multi-family developments
Each environment requires specific duct design considerations that are addressed through system layout, sizing, and coordination with mechanical systems.
Why Southport Mechanical
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In-house ductwork fabrication to maintain quality control and reduce project delays
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Coordination across fabrication, installation, and mechanical system design for consistent execution
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Experience supporting commercial and industrial HVAC projects with complex duct requirements
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Focus on airflow performance, system efficiency, and long-term operation across all installations
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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Expert Answers To Your Service Questions
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Read About Our Customers’ Recent Experiences
Brian Childers
23 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!
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.
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
