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Our History

We know what counts and our history backs that up.

We certainly have staying power — more than 100 years of it, if you’re counting. We are.

In fact, that’s one of the reasons we’ve grown from Walker Jamar Sr.’s initial $500 investment to a multimillion-dollar company with a rich history.

Helping you make every dollar of your investment count.

Interestingly enough, before making his investment, Walker found work counting hours – as a timekeeper with A.H. Krieger, a Duluth, MN, pipe-covering firm. Learning the business, honing his skills and, most importantly, counting his savings, he bought the company five years later.

In 1985, APi Group, a St. Paul-based private holding company, brought us into the fold. Acquisitions since, such as Arrowhead Refrigeration, further enhance our capabilities and enriched our history of success.

But through it all, we stayed true to our founder and our history – making every hire, every estimate, every project, every conversation, every day – count.

Jamar historical image of man
Jamar historical image of machine
Jamar historical image of boat launch
100 Years Strong

For more than 100 years, Jamar has built a reputation as a solid partner delivering solid solutions.

  • Headquartered in Duluth, MN.
  • Main offices in Green Bay, Wis., Spooner, Wis., Escanaba, Mich., Lewiston, Idaho, Watford City, N.D., and Arden Hills, MN.

As an expert specialty contractor, we solve extraordinary challenges for our industrial and commercial customers and execute those solutions flawlessly. With all of our complimentary services housed under one roof, we can act as our customers’ sole source solution provider.

Our customers consider us the premier provider in our areas of expertise because:

  • We believe safety is non-negotiable.
  • We hire only the best people, then empower them to do great work.
  • Our experts are closely aligned, bringing synergy to every project.
  • We create true partnerships with our customers by understanding and meeting their needs.
  • Our pursuit of excellence is tireless – we will never stop striving to get better at what we do.

1911

AH Krieger Company was purchased

1913

Walker Jamar Company was established

1920s

Additional operations under the Jamar Olmen name

1920s

Opened branch offices in Chicago, Kansas City & Houston

1970s

Renamed The Jamar Company

1985

Acquired by APi

1988

Acquired Asdco Distribution

1992

Acquired Arrowhead Refrigeration Arrowhead Mechanical & Sonneman Constructor

1999

Opened the Michigan operations of Jamar with acquisition of Pentecost Construction

2000

Opened the Idaho operations of Jamar

2003

Opened the Wisconsin operations of Jamar

2009

Acquired Stout Mechanical

2010

Asdco Arden Hills , MN, operations open

2011

Asdco Watford City, ND, operations open

2015

Asdco Spooner, WI, operations open

2017

Asdco Shakopee, MN, operations open

2019

Integrated Industrial Contractors Inc., an APi Group sister-company from Bismarck, ND, into our operations. Acquired CMS Mechanical Service in Windsor, CO.

2021

Acquired Bartingale Mechanical Contractors in Eau Claire, WI.