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O'Connor Co Logo
  • 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

We work together to provide the best customer experience.

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O'Connor Co Logo

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
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  • Contact Us

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