J M Brennan

Company Overview

J.M. Brennan, established in 1932, is a mechanical contracting company that operates in the southeastern Wisconsin region. Our expertise includes designing and installing boilers, chillers, air handling units, exhaust systems, ventilators, sanitary sewer systems, water treatment plants, and heat recovery solutions. Our piping services cover food-grade, refrigeration, industrial gas, underground, and compressed air applications. Our team includes experienced designers, engineers, steam and refrigeration fitters, and sheet metal workers. Being family-owned and managed, we use various equipment, including backhoes and dump trucks. We provide around-the-clock repair and maintenance services and maintain our office in Milwaukee. JM Brennan has remained family-owned and operated since 1932. We are conveniently located near downtown Milwaukee and serve all of southeastern Wisconsin.