J.M. Brennan, Inc.

J.M. Brennan, Inc. is a union mechanical contractor serving the Milwaukee, WI area. As a signatory contractor with Pipefitters Local 601, the company employs skilled union tradespeople committed to quality and safety. With 94 years of experience in the construction industry, J.M. Brennan has built a reputation for reliable, high-quality work. The company's core services include HVAC, plumbing, process piping, controls, and industrial sheet metal. J.M. Brennan specializes in mechanical design, construction, and 24/7 service, serving industrial, commercial, and institutional clients across Milwaukee and southeastern Wisconsin. Their experienced team brings expertise in all aspects of mechanical systems. J.M. Brennan serves clients throughout Wisconsin from its headquarters in Milwaukee. The company operates a fleet of 130 trucks, allowing them to support projects ranging from local renovations to multi-site industrial installations. Their geographic reach and union workforce enable them to handle complex, large-scale projects with union expertise. The company maintains strong relationships with Pipefitters Local 601 and is committed to employing trained, certified tradespeople. J.M. Brennan holds various certifications and has a proven safety record, with programs like OSHA 30 training for all field staff. With bonding capacity of over $10 million, the company is licensed to work throughout the Midwest. Notable projects for J.M. Brennan include work for major healthcare, manufacturing, and commercial clients in the region. With a team of over 375 professionals, the company has the resources to handle projects of all sizes, from small renovations to large-scale new construction. J.M. Brennan's 94 years of experience and reputation for quality workmanship make them the preferred mechanical contractor for demanding projects in Milwaukee and beyond. For HVAC, plumbing, and 24/7 mechanical services in Milwaukee, contact the union experts at J.M. Brennan, Inc.