24/7 EMERGENCY SERVICE: (414) 342-3829 toggle menu ABOUT US Mechanical Contractors in Milwaukee J.M. Brennan, Inc. is located in Milwaukee, WI and proudly serves all of Southeastern Wisconsin. We’re your single-source mechanical contractor for HVAC, plumbing, process piping, controls, industrial sheet metal, and 24/7 service. Why J.M. Brennan? The craftsmen at J.M. Brennan understand the mechanics behind every component in your building. That’s why we’re able to offer solutions for even the most demanding projects. J.M. Brennan is the preferred mechanical contractor for hospitals, commercial buildings, universities, and manufacturing facilities. Customer Focused Our customer-driven approach is why we have been around for over 85 years. 24/7 Service When you have a 911 call, we'll pick up the phone 24/7 to dispatch a technician. High Quality Work We build on a tradition of quality, workmanship, and superior value. Dedicated Craftsmen J.M. Brennan employs more than 375 talented, experienced tradespeople and skilled technicians. Fleet of 130 Trucks The green J.M. Brennan trucks make up the largest mechanical fleet in Milwaukee. Proactive Solutions J.M. Brennan knows your building's needs and will offer insightful solutions. Test Test information WHAT WE DO ABOUT US HISTORY CAPABILITIES CAREERS NEWS 2101 W. St. Paul Ave. Milwaukee, WI 53233 Phone: (414) 342-3829 Fax: (414) 342-3209 ©2021 J.M. Brennan, Inc. Privacy Policy Designed by Savage Solutions

24/7 EMERGENCY SERVICE: (414) 342-3829 toggle menu CAPABILITIES What We Do J.M. Brennan has the knowledge, resources, and past experience to handle all your mechanical contracting needs. From design and build to 24/7 service, we have solutions for: HVAC Plumbing Process Piping Industrial Sheet Metal Controls 24/7 Service Fire Protection CONTACT US ABOUT US HISTORY CAPABILITIES CAREERS NEWS 2101 W. St. Paul Ave. Milwaukee, WI 53233 Phone: (414) 342-3829 Fax: (414) 342-3209 ©2021 J.M. Brennan, Inc. Privacy Policy Designed by Savage Solutions