Milwaukee County's #1 Commercial HVAC and Plumbing Contractor

For Repairs & Custom Systems.

Commercial HVAC engineers

Southport Engineered Systems builds commercial HVAC and plumbing systems for businesses across Southeast Wisconsin and Northern Illinois. With over 100 years of combined experience behind our founding, our team of Milwaukee County engineers and contractors is fully equipped to create smart solutions for your business.

We offer design, construction, installation and repair services for your commercial HVAC and plumbing systems, as well as 24/7 emergency commercial HVAC and plumbing system repair. No matter the project, we keep your budget, specifications and performance requirements paramount. Let our experts take your plumbing and HVAC systems to the next level.


Our Commercial Capabilities

Reduce your time to occupancy with Southport Engineered Systems. Our team communicates clearly and executes plans with precision.

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 keep your project moving on budget and on time with our advanced integrative software systems and prefabrication services.  

Commercial HVAC Systems

We are the largest Carrier dealer in Southeast Wisconsin and Northern Illinois, and we service all common industrial HVAC units.

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

Our cost-effective solutions and attention to detail set us apart from our competitors.


Common HVAC Services We Perform


Commercial Plumbing Systems

Working with Southport means you don’t have to rely on third party suppliers. Instead, we maximize your project’s efficiency by prefabricating and supplying the parts your commercial plumbing system requires. Our expertise in commercial plumbing systems spans schools to assisted living facilities and beyond.


Common Plumbing Services We Perform

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

Commercial Fire Sprinkler Systems

Southport’s team equips you with the ideal commercial fire sprinkler system for your requirements. We guarantee your fire system’s safety and code compliance, and we follow NFPA and SPS regulations. Whether a wet pipe, dry pipe, pre-action or deluge system is best for your property, our engineers will ensure your facility is fully prepared for when emergency strikes.

  • 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