We're passionate about one thing... Your success

MMCA represents over 120 union contractors across the state of Minnesota. Our contractors service and install plumbing, cooling and heating systems in residential, commercial and industrial sectors.  Membership with MMCA provides labor relations services, legislative representation, and robust educational opportunities.

MMCA's History

MMCA is a member driven organization with a full-time staff designed to lead and direct our industry.  MMCA and its predecessor organizations incorporated almost 100 years ago with the consistent purpose to promote high quality workmanships, protect public health & maintain harmonious business relationships.

Copper fittings



Larry Stevens

Pioneer Power

Andy Graham

Modern Heating & Air

Lynn Bishop

NAC Mechanical &
Electrical Services

Jim Froehle

Signature Mechanical

Kent Baker

Stewart Plumbing

Cindy Clemens

Horwitz, Inc.

Jaime Quello

Peterson Sheet metal

Blake Wrigley

Wrigley Mechanical

Ross Noak

Egan Companies

Brian Pearson

Kraft Mechanical


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Steve Pettersen


Steve Pettersen has over 30 years of negotiation experience and has negotiated labor agreements with pipe trades unions in the Midwest.  This can only be done successfully by knowing the needs MMCA members and developing a working relationship with local union representatives.  He also is a management trustee on several fringe benefit funds and joint apprenticeship committees.

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Gary Thaden


Gary Thaden keeps a vigilant eye on the Minnesota Legislature and other areas of Minnesota state and local government.  Thaden helps legislators and other government officials understand the benefits of MMCA positions on workers’ compensation, unemployment compensation, employment law, construction contracts and payment issues, licensing, and tax law.  After over 30 years of lobbying he's developed the trust with government officials that benefits MMCA members.

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Matt Marquis


Matt Marquis leads the negotiation and administration of collective bargaining agreements for MMCA.  His work also includes researching and advising employers in areas such as OSHA, Fair Labor Standards Act, employment law, and policy drafting.  He serves as an employer-appointed professional trustee on Taft-Hartley pension, health and welfare benefit trust funds, and apprenticeship funds.  Marquis earned his law degree at the University of St. Thomas - School of Law in Minneapolis, where he was a President’s Scholar.

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Sophie Thaden


Sophie Thaden develops and manages MMCA’s digital and print communications strategies and works to identify innovative ways to promote and enhance the industry through marketing and educational programs.  Thaden works closely with the Government Affairs Director on legislative issues and is a registered lobbyist for the Minnesota Mechanical Contractors Association.  Thaden holds a Bachelor of Arts in Political Science from University of Minnesota.

MMCA Office & Training Center

Interested in using our facility?
Members are welcome to use our facility for corporate trainings or meetings free of charge.
The MMCA Training Center features moveable tables and chairs that can be configured to seat up to 40 people. The room also includes a built-in projector, flip charts, and access to the kitchen & common spaces in the office.
The Conference Room features a conference table with seating for up to 12. The room also includes a TV with laptop hookup.
MMCA members may book the training center or conference room for their use free of charge. Complete this space request form to inquire.
  • The available days/times are Monday through Friday between 7:30 am - 5:00 pm and cannot conflict with MMCA events.
  • MMCA will provide coffee and beverages and access to the kitchen & buffet area.
  • Members are responsible for providing any food/snacks for their meeting.

10590 Wayzata Blvd., Ste. 100
Minneapolis, MN 55305

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