Major Mechanical

Commercial & Industrial Services

  • Maintenance Agreements
  • New construction or replacement/ Design/Build
  • Rooftop Heating/Air and Package Units
  • Chiller and Dry-cooler (water/glycol) systems
  • Liebert Systems, Data Aire Systems
  • Exhaust fans and kitchen hoods
  • Air Handlers
  • Make up air units
  • Boiler systems
  • Refrigeration
  • Air purification units, clean rooms
  • Testing, Adjusting, Balancing
  • Flow / Pressure Measurement
  • Geothermal Systems
  • Mitsubishi City Multi Certified
  • Turn-key Design Build HVAC Projects
  • Bid - Plan & Spec Projects
  • Hydronic systems
  • Metal air distribution, ventilation, and process air systems

    •  

    Major Systems, INC. provides single source reliability. We integrate the latest technology with high quality products and services to help save you money and time.

     

    24 Hour Emergency Service and Repair

    In Milwaukee, call 414.771.4400

    In Waukesha, call 262.522.6766

    Customer Protection and Privacy Statement .

    Major Systems, INC. is a member of the Better Business Bureau of Wisconsin. Accordingly, Major Systems, INC. does not collect any personal data on persons visiting this website. If you choose to contact us through e-mail or by submitting forms through the U.S. Mail, the information you provide will be used by Major Systems, INC. and will not be given or sold to any other companies or individuals.