Since 1999, Southeastern Mechanical Inc. has been specializing in “Making Your Comfort Our Specialty”. SMI is a reputable mechanical contractor with in-house capabilities to design, install, service, and maintain most types and sizes of HVAC systems. Anything from sheet metal to equipment replacement and installation of HVAC control systems, SMI has the resources for most projects. The commitment and quality of the workmanship of our company is what drives the longevity of our customer relationships. SMI is centrally located between Milwaukee and Chicago to serve southeastern Wisconsin, northeastern Illinois, and beyond. SMI also offers around the clock service for all of your HVAC emergencies.

This site will help thousands of Southeastern Wisconsin and Northern Illinois businesses obtain a comfortable and efficient work environment. Come inside and learn how to efficiently equip your business now.

Specializing In

  • Furnaces

  • Air Conditioners

  • Sheet Metal

  • Indoor Air Quality

  • Boilers

  • Rooftop Units

  • Piping

  • Environmental Chambers

  • Hydronic/Indoor Heating

  • Exhaust and Ventilation Systems

  • Control Systems