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O'Connor Company
  • Events
  • News
  • Careers
  • Employee Portal
  • Contact Us
  • Serving
    • Markets Served
      • Commercial
      • Educational
      • Healthcare
      • Financial
      • Industrial
    • Clientele
      • Building Managers
      • Contractors
      • Design Professionals
  • Products
    • Manufacturers
    • Replacement Parts
    • Warranties
  • Projects
  • About Us
    • Community Support
    • Leadership
  • HVAC Parts Request

Projects

Project Filters

  • Projects
  • Michael J. Fitzmaurice State Veterans Home
    Hot Springs, SD 2015
  • Music Hall
    Casper, WY 2013
  • Student Union
    Casper, WY 2012
  • Sioux Falls Regional Airport
    Sioux Falls, SD 2010
  • Black Hills Surgery Center
    Rapid City, SD 2009
  • O'Gorman Campus & Performing Arts Center
    Sioux Falls, SD 2008
  • First National Bank
    Sioux Falls, SD 2008

Customer Comments

“For many years, I have purchased a variety of HVAC equipment from O’Connor Company. I keep coming back because they always stand behind their products and services”
Paul Carrette Alternative Energy Manager Poet, Inc. Sioux Falls, SD

We work together to provide the best customer experience.

  • HVAC Elements Group

    Heating & Cooling Specialists

    Learn More
  • G & R Controls

    Building Control Specialists

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  • Balancing Professionals

    Air Quality Experts

    Learn More

Headquarters

4909 North Lewis Ave Sioux Falls, SD 57104
  • (605) 336-0333
  • Fax: (605) 336-8681

Regional Offices

1221 Concourse Drive
Rapid City, SD 57703
  • (605) 348-2033
  • Fax: (605) 348-9215
  • Events
  • News
  • Careers
  • Employee Portal
  • Contact Us

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