Green Energy

green.pngO'Connor Company understands that energy conservation is a key element to building owners' wishes. We work with multiple HVAC manufacturers to offer you the most energy efficient products; providing engineers and contractors with multiple solutions that fit the needs of building owners.  Whether it's the best initial cost or the best life cycle costs...¦we provide solutions that meet customers' expectations. Engineers and contractors work with our team of experts to provide a strategic energy systems plan that employs equipment to operate as efficiently as possible. With the area's most experienced team of engineers and support staff, we can help develop a sensible, comprehensive plan to significantly conserve energy, lower emissions and reduce your overall operating costs.


Magnitude_Chiller.jpg We are honored to be the area’s representative for Daikin McQuay. The Daikin McQuay Magnitude Chiller is the most energy efficient chiller in its size range with part load performance as low as .311 kW/ton IPLV and is 40% more energy efficient than standard centrifugal chillers. Click here to learn more about the industry’s leading Green Chiller.






Area building projects with Magnitude Chillers installed:

  • O’Gorman High School, Sioux Falls, SD
  • State Capital Building, Pierre, SD
  • First National Bank, Sioux Falls, SD
  • Wells Fargo Bank, Sioux Falls, SD


O’Connor Company is a proud supporter of the annual Plain Green Conference. Plain Green is a conference and marketplace for green design, business and ideas that advances sustainability in the northern plains. Click here for more information on Plain Green.