Major Systems, INC.

Your Partner for the 21st Century

Major Systems, INC. is a Systems Integrator of HVAC building automation systems including Direct Digital Controls. We service most markets in Southern, Western, and Central Wisconsin and have offices conveniently located to best serve you. We work with property management firms, manufacturing companies, schools, commercial buildings, and non profit organizations to serve their comfort system needs.

What are Building Automation Controls? Visit Wikipedia for a good overview of DDC Building Automation Controls.

Major Systems, INC. is dedicated to providing the finest products and services for Building Automation Controls Systems to its clients. With decades of controls engineering experience in house, we can provide efficient, economical and easily managed solutions to all your HVAC software and Building Automation requirements.

  • Specification development for Owners and Consulting Engineers.
  • Building Automation software
  • Installation and design of Building Automation Systems in new construction and retrofit projects.
  • Lighting Control Systems
  • Remote access via secure Internet connection to building automation systems
  • Integration between different manufacturers building sub-systems (lighting, fire, access control, power, chillers, heating, etc)
  • HVAC accounting/ tenant billing systems for after-hour usage
  • Design/Build energy management and control projects
  • Customer Training on installed Control Systems

For further information, send us an email with your questions or comments, or call us at 414.771.4400.

24 Hour Emergency Service and Repair

In Milwaukee, call 414.771.4400

In Waukesha, call 262.522.6766

Our Policy:

Have piece of mind when you look to us for your Building Automation Controls needs. You will always be up-to-date with all aspects of your project.

  1. Consultation
    • Determine the best mix of hardware, software, and service to best fit your needs.
  2. Project Planning
    • Professional Project Management ensures timely completion of projects.
  3. Startup and Comissioning
    • Commissioning and Testing of Systems prior to installation in our Laboratory utilizing the most stringent industry standards.
  4. Customer Traning
    • Ensures ability of owners and owner's personnel to operate new systems.
  5. Support and Service
    • We provide continuing support and service to maintain your system and ensure proper functioning.