Commercial Heating & Cooling System Design & Construction

If you're looking to repair your commercial rooftop HVAC unit at your southeast Wisconsin business, contact Southport Engineered Systems today to solicit a bid.

Industrial HVAC Repair, Construction & System Design

The expert commercial HVAC repair technicians at Southport service all common industrial HVAC units. With technicians on call 24/7 and an ever-expanding fleet of service vehicles, Southport Engineered Systems conducts emergency commercial HVAC repair at a moment’s notice. Plus, our team of engineers is licensed in 7 states, ensuring your project is up to code no matter where you are. We repair rooftop units (RTUs), package HVAC units, industrial heat pumps & more. No part of your commercial HVAC system exceeds our scope. Don't let broken HVAC units hurt your bottom line, contact Southport Engineered Systems for fast commercial HVAC repair.

Southport's engineering and design capabilities allow our expert engineers to install and repair all types of industrial HVAC systems. The expert engineers at Southport have decades of industry experience working on basic and complex HVAC systems, turning every challenge into a success. Southport handles jobs big and small. Contact us for:

At Southport, we fabricate our own sheet metal and prefabricate many of the piping systems we install. Combined with fully integrated software programs and procedures, we can utilize cost control estimating, BIM and/or 3D drafting and prefabrication services to enhance the quality of our work and enable us to meet or exceed your construction schedule.

Commercial HVAC Capabilities

  • Basic Ventilation Systems
  • Chilled Water Systems
  • 1000 Ton Air Handlers
  • And More

Whether you need a basic HVAC system for an apartment building or an advanced ventilation system for a hospital clean room, Southport knows no limitations. Give us your specifications and our engineers build to suit. There’s a reason countless Wisconsin businesses turn to us for HVAC system design and installation.

Best Commercial HVAC Repair

HVAC Components Used

  • Condensers
  • Custom Duct Work
  • Humidifiers
  • And More

Your facility may only require a heat exchanger and custom ductwork. It could also require a massive air handler, a chilled water system, and multiple unique ventilation zones. Whatever your facility requires, the experts at Southport will fabricate custom ductwork to fit the unique needs of your HVAC system.

RTU Repair in Wisconsin from Southport

Southport Engineered Systems repairs packaged rooftop HVAC units (RTUs) from all major brands. Packaged RTUs are a common sight on commercial buildings and keep everything from produce to hospital patients comfortable year-round. Packaged HVAC units are essential to a healthy and productive workplace. A broken packaged RTU can be detrimental to a company's bottom line, and even downright dangerous in facilities like hospitals where climate control is essential. Companies in need turn to the commercial HVAC experts at Southport Engineered Systems for packaged RTU repair services in Wisconsin.

Commercial buildings we repair and install HVAC units for include:



Our commercial HVAC contractors offer licensed repair of all makes and models, including:

York Commercial HVAC Repair

York RTU Repair
  • Affinity
  • Small Sunline
  • Direct Fit
  • Predator

Carrier Commercial HVAC Repair

Carrier RTU Repair
  • Comfort
  • WeatherMaster
  • WeatherExpert
  • WeatherMaker

Trane Commercial HVAC Repair

Trane RTU Repair
  • Impak
  • Precedent
  • Foundation
  • Voyager

American Standard Commercial HVAC Repair

American Standard RTU Repair
  • Odyssey Split
  • Precedent
  • Voyager

Johnson Controls Commercial HVAC Repair

Johnson Controls RTU Repair
  • Series 100
  • 20
  • 40
  • 5

Lennox Commercial HVAC Repair

Lennox RTU Repair

  • Energence
  • Landmark
  • Raider
  • Strategos

Carrier RTU InstallationCarrier Packaged RTU Installation

Southport installs Carrier packaged rooftop air conditioning units in Southeast Wisconsin & Northern Illinois. As the largest Carrier dealer in the state of Wisconsin, Southport offers the best deals available on certified Carrier RTU installation. High energy efficiency, low operating volume, enhanced dehumidification capability, superior heating and small footprints make packaged RTUs from Carrier some of the most advanced commercial HVAC units on the market.

With over a century of collective experience in the HVAC industry, the engineers at Southport understand the subtleties of commercial heating & cooling. Our team of HVAC experts will balance budget, performance, and purpose to get you the right Carrier commercial packaged rooftop unit for your facility. If your commercial facility needs a new Carrier Comfort, WeatherMaker®, WeatherMaster®, or any other Carrier packaged rooftop unit contact Southport to get started.

HVAC System Design for Commercial Properties

Southport prefabricates HVAC ductwork and components whenever possible. Our prefabrication process ensures reduced time to occupancy™. Our custom made commercial HVAC systems can be found in warehouses, factories, apartment buildings, municipal buildings, schools, and more. Southport’s commercial HVAC design has played an active role in the growth of Wisconsin counties like Kenosha, Racine, Walworth, Jackson, Milwaukee, and more.

Southport’s capabilities encompass HVAC Piping and Sheet Metal work, which allows a building owner or developer to enjoy the convenience and efficiency of our source of services. Our team of engineers has perfected our skillset and workforce effectively and efficiently to meet the demand for diverse project experience. The fabricators and engineers at Southport understand the nuances and environmental requirements of different facilities and build to suit.

Our custom commercial HVAC systems include:

  • Air Conditioners
  • Condensers
  • Humidifiers
  • Air Handlers
  • Chilled Water Systems
  • Terminal Units

Southport has been designing HVAC systems in southeastern Wisconsin since 2005. Counties served include:

Contact Southport's engineers today for HVAC construction or repair.


Municipal HVAC Services

Southport Engineered Systems has designed a number of complex projects for commercial clients in Southeast Wisconsin. Our team of engineers have years of experience designing one of a kind commercial HVAC system and are prepared to overcome any obstacle in their way. Commercial HVAC systems designed and installed by Southport can be seen in facilities from Menomonee Falls to Racine. View some of our most recent commercial HVAC projects.

Variable Refrigerant Flow HVAC System

Commercial HVAC Project in Menomonee Falls, WI

Olympia Brown Science School

HVAC Design and Installation in Racine

Geothermal Heat Pump System

Commercial HVAC Installation in Racine

Other Services:

We have a 50,000 square foot state-of-the-art pre-fabrication facility with hoisting equipment where we do our welding, cutting, and joining to increase efficiency, safety, and quality.

Southport Engineered Systems has complete plumbing capabilities including internal plumbing, fire suppression systems, and industrial plumbing design for commercial buildings.

Fire suppression systems are absolutely necessary for any commercial building engineered to your specifications. Southport ensures safety by designing and installing turnkey systems.


Fire Protection