Jefferson County's #1 Commercial HVAC and Plumbing Contractor

For Repairs & Custom Systems.

Commercial HVAC engineers

With unparalleled expertise in providing commercial HVAC and plumbing solutions for Southeast Wisconsin and Northern Illinois, our contractors are equipped to handle whatever HVAC and plumbing challenges your Jefferson County business is facing. Our comprehensive commercial HVAC and plumbing services include system design, construction, installation and repair.

We keep your budget, specifications and performance requirements at the forefront of our work, and we offer 24/7 emergency repair for commercial HVAC and plumbing systems. Southport Engineered Systems has the Jefferson County commercial HVAC and plumbing contractors you can count on.

Our Commercial Capabilities

We are regional leaders in reducing time to occupancy. From conceptualization and design to project completion and maintenance, our clear communication and flawless execution of critical processes make your HVAC and plumbing projects a success.

Our commercial scope includes: 

  • Rooftop Units (RTUs) 
  • Package HVAC units 
  • Geothermal heating and cooling 
  • Ventilation systems and multiple unique ventilation zones
  • Custom ductwork
  • Humidifiers and chilled water systems
  • Terminal units 
  • HVAC piping
  • Sheet metal work 
  • Water, waste and storm sewer systems
  • Deionized water piping
  • Compressed air systems
  • Utility and industrial process piping
  • Backflow testing
  • Locating and camera services 
  • And more

We use advanced integrated software systems and prefabrication whenever possible to get your Jefferson County building to occupancy sooner.  


Commercial HVAC Systems

Southport is the largest Carrier dealer in Southeast Wisconsin and Northern Illinois. We service all common industrial HVAC units including: 

  • York
  • Trane
  • American Standard
  • Johnson Controls
  • Lennox 

Let us exceed your expectations with exceptional attention to detail and high-quality parts. 


Common HVAC Services We Perform


Commercial Plumbing Systems

Our team removes stress and uncertainty from your operations by prefabricating your commercial plumbing components and serving as your direct plumbing supplier. From schools and assisted living facilities to apartment communities with pools and fitness centers, we have built the most dependable plumbing systems across Southeast Wisconsin and Northern Illinois.


Common Plumbing Services We Perform

  • Commercial plumbing design
  • Commercial plumbing installation
  • Commercial plumbing repair
  • Emergency repairs
  • Plumbing camera services

Commercial Fire Sprinkler Systems

Taking chances on the quality of your commercial fire sprinkler system isn’t worth it. Secure the right commercial fire sprinkler system for your new build or existing facilities with Southport Engineered Systems. We are fully versed in NFPA and SPS regulations, and we guarantee your fire system will be safe and up to code. Whether you require wet pipe, dry pipe, pre-action or deluge systems for your property, Southport builds your Jefferson County sprinkler system with professionalism and care.

  • Inspection
  • Retrofitting and remodeling
  • Emergency backup power and lighting
  • Maintenance 

Common Fire Protection Installations We Perform

  • NFPA 13 Water Systems
  • Backflow Prevention & Cross Connection
  • Antifreeze Sprinkler Systems
  • Fire Alarms
  • Fire Pump Controls