J.M. Brennan is a mechanical contractor dedicated to providing high performance HVAC, Building Controls, Plumbing, Process Piping, Industrial Sheet Metal, Fire Protection & Monitoring.  We employ over 400 of the most highly skilled Pipe Fitters, Plumbers, Sheet Metal Workers, Sprinkler Fitters, Service Techs, and Controls Techs.  We provide engineering, sustainable design, and service 24/7.  Our customers include industrial, commercial, and healthcare facilities throughout Southern Wisconsin including Milwaukee and Madison.

Building Supplies

Construction

Industrial

J.M. Brennan, Inc.

J.M. Brennan, Inc.'s headquarters in Milwaukee, WI, United States

John Brennan III

Eric Gould

Justin Harer

Tim Kahle

Jeff Thiel

Jay Johnson

Max Ziolkowski

Christopher Elsner

Brian Summers

The Engineering and Construction Management team at J.M. Brennan, Inc. is responsible for overseeing the design, planning, and execution of mechanical construction projects. This team collaborates to ensure high-quality delivery of HVAC, plumbing, and fire protection systems, utilizing advanced BIM/VDC technologies to enhance efficiency and precision. They coordinate cross-disciplinary efforts, manage project timelines, and maintain client communication to ensure successful project completion in industrial, commercial, and healthcare sectors.

Engineering and Construction Management

The Financial Operations team at J.M. Brennan, Inc. is responsible for managing the company’s financial health through diligent oversight of accounts payable, accounting practices, and financial reporting. This team ensures accurate tracking of expenditures and revenue, compliance with financial regulations, and effective budget management, enabling seamless operational support for the skilled trades and services provided by the company.

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J.M. Brennan, Inc.

Org chart

Teams

Engineering and Construction Management

Financial Operations

Offices

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J.M. Brennan, Inc.

Org chart

Teams

Engineering and Construction Management

Financial Operations

Offices

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