800.637.4822

At ATIGROUP, we offer building owners a broad range of comprehensive energy-saving options, helping them to identify and implement key ways of reducing operational expenses.

Our History

For over two decades, we have committed ourselves to consistently exceeding customer expectations, through innovative design and smart building solutions.

December 1986 Walter Mechanical Service founded by Michael A. Bunting, John W. Jensen, and Howard Shand. Mr. Shand served as Principal. Number of employees: 2
1990 Michael Bunting and John W. Jensen purchase all of Howard Shand’s interest. Partnership is equally divided between Mr. Bunting and Mr. Jensen.
1993 Walter Mechanical Services receives first agreement in excess of one million dollars and procures the largest ever utility rebate ($1.2 million) for Saginaw Steering Gear Division of the General Motors Corp. now Nexteer Automotive. Number of employees: 23
1997 Walter Mechanical Service begins doing business as (DBA), Air Tech Inc.
2001 Walter Mechanical Service changes DBA name to ATIGROUP. Number of employees: 27
2007 Achieved Leadership in Energy and Environmental Design (LEED) Accreditation
2008 ATIGROUP awarded agreement in excess of $20 million dollars with the Department of Defense.
2012 ATIGROUP certifies first LEED Silver and LEED Gold buildings
2013

ATIGROUP is certified as a Veteran Owned Small Business. Definitive hiring preference provided to our nations honorably discharged, military veterans. Business reach is stretching throughout the mid-western United States.

ATIGROUP continues to receive multiple requests to present on energy management topics and emerging technologies at energy conferences throughout the mid-west.

Michelle Landon promoted to President of ATIGROUP.  

ATIGROUP employs approximately 50 persons.