24/7 Emergency Service: (414) 342-3829

What We Do

Design

J.M. Brennan works to understand your needs to design a system that works for you today and tomorrow.

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Build & Install

J.M. Brennan is building on a tradition of quality, workmanship, and superior value.

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24/7 Service

J.M. Brennan technicians have the skills for every job, whether that's doing an inspection or repairing a burst pipe.

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Experienced Contractors

86 years of industry experience

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