Auer Steel
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Auer Steel began in 1940 on Auer Avenue in Milwaukee, WI when Don Curtes, Sr. founded the business on his philosophy of superior customer service. Now, over 84 years years and two generations later, the Curtes family still owns and operates Auer Steel with the same value-added service ideals.

Founded in 1940 by Don Curtes Sr., Auer Steel began as a small operation on Auer Avenue in Milwaukee, WI.

1940 marked the beginning of Auer Steel's journey and just 11 years later, in 1951, the company outgrew its original location and relocated to Fond du Lac Avenue.


In 1977, Auer Steel moved to its current 108,000 square foot facility on Silver Spring Drive.


The 1980s saw further expansion with the establishment of regional satellite branches across Milwaukee.


Auer Steel continued its growth trajectory in 1995, expanding into Minnesota and serving customers across the state of Minnesota, eastern North Dakota, and northwestern Wisconsin.


In 2004, Auer Steel acquired a Bryant distributorship, adding coverage in northeastern Wisconsin and Michigan's Upper Peninsula.

in 2010, Auer Steel relocated its Twin Cities operation to a modern 110,000 square foot facility in Plymouth, MN.


The company continued to invest in its future with the opening of a branch and training facility in Madison, WI in 2013. 


In 2015, Auer Steel celebrated its 75th anniversary by launching its Fargo location, solidifying its presence in Minnesota and eastern North Dakota.


In 2022 Auer Steel invested in a state-of-the art hands-on training facility in Milwaukee, Wisconsin which is used regularly to conduct training for the trades.


In early 2023 Auer Steel unveiled their newest hands-on training facility in Plymouth, Minnesota that is focused on heat pump technologies.


After over 80 years, Auer Steel remains family owned and a leading force in the HVAC industry, built on a legacy of innovation, customer focus, and strategic expansion.