WJO Chicago is a multifaceted mechanical contracting company specializing in a complete array of services, including: industrial-sized boiler and burner repairs and replacements, design/build retrofit projects, and centrifugal chiller repairs and replacements. Our technicians have skills and capabilities to work on equipment ranging from fan coil units, VAV boxes, rooftop units, makeup air units and air handling units to hot water boilers, steam boilers, air cooled chillers, centrifugal chillers and more. We offer 24/7 emergency services, standard repair calls, and preventative and premium maintenance agreements.
WJO Chicago is a MZI Group company. MZI Group Inc. is a Veteran and Latino owned organization that has been a leading provider of electrical, utility, mechanical, telecom, energy infrastructure, design build, facility services and plumbing for over two decades.
We deliver comprehensive, flexible, and innovative solutions for the most complex challenges. Our expertise, stability, and cost-effective approach to operating guarantees clients satisfaction.