J M Brennan

Company Overview

Founded in 1932, J.M. Brennan is a mechanical contracting business serving the southeastern Wisconsin area. Our expertise includes designing and installing boilers, chillers, air handling units, exhaust systems, ventilators, sanitary sewer systems, water treatment plants, and heat recovery solutions. Additionally, we offer piping services for food-grade applications, refrigeration, industrial gas, underground systems, and compressed air. 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. J.M. Brennan delivers 24/7 repair and maintenance services and is based in Milwaukee. JM Brennan has remained family-owned and operated since 1932. We are centrally situated close to downtown Milwaukee, serving the entire southeastern Wisconsin area.