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Key Team Members

Meet our key team members

  • Mike McCoy

    Mike McCoy

    Michael G. McCoy serves as President of ACI Mechanical, Inc. and Comfort Systems USA Midwest, LLC, both subsidiaries of Comfort Systems USA.  Formerly Mr. McCoy served as Executive Vice President for the company with a focus on sales and operations.   During his more than forty-year tenure…

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  • Kent Meyn

    Kent Meyn

    Kent has a B.S Degree in Construction Engineering from Iowa State University and joined the ACI team in 1983.   In his tenure at ACI, Kent has managed industrial and manufacturing projects across the country.  Kent specializes is preconstruction services and leads an outstanding group of project…

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  • Greg Braga

    Gregory Braga, PE

    Greg Braga came to ACI Mechanical in 1993 after graduating from Iowa State University with a BS in Mechanical Engineering.  He has been the Director of Engineering since 2001 and oversees the Engineering and Detailing Functions of the Engineering Department.  Greg's typical design emphasis is steam,…

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  • Shon Smith

    Shon Smith

    With a strong background in the sheet metal trade, Shon has based his focus on the fabrication component within our industry.  As Prefabrication Manager, Shon's responsibility is to ensure that ACI remains a leader in mechanical fabrication and manufacturing.  Whether it's being involved in the estimate…

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  • Chris Kayser

    Chris Kayser

    Chris currently serves as ACI's Production and Training Manager with a focus on field leader development and project production efficiencies.  Over his forty plus years of tenure with the company, Chris has worked his way up starting as a plumber/pipefitter/welder, moving to a foreman, then becoming…

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  • Laura Sundine

    Laura Sundine

    Laura currently serves as Human Resources Coordinator for ACI Mechanical/Comfort Systems USA Midwest.  Laura first came to ACI as their service dispatcher, and has held several positions in her 25 plus years with ACI in the Accounting and Purchasing Department, before taking the Human Resources position…

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  • Randon Parks

    Randon Parks

    Rand joined ACI Mechanical in 2003 as a Director of Building Services. In 2010 Rand took over the General Manager position of Comfort Systems USA Midwest and continues to serve in that capacity. Prior to joining ACI Mechanical he owned and operated his own HVAC company…

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  • Tim Grewell

    Tim Grewell

    Tim came to ACI Mechanical in March of 2005 as the service manager. Prior to that time, Tim spent a year and a half as a remote service technician with the Comfort Systems USA National Accounts group. After building experience in the HVAC industry over the…

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  • James Kessler

    James Kessler

    James currently serves as Service Manager for our Comfort Systems USA Midwest team.  James joined Comfort Systems back in 2008 when they purchased the company he worked for in Las Vegas.  James served as a Service Technician at Comfort Systems USA Southwest in both the Chandler,…

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