MZI specializes in designing and building commercial and industrial heating, ventilation, and cooling systems for new and existing systems. MZI leads the way in mechanical construction and can successfully manage projects of all sizes.

Our Services

As one of Chicago’s leaders in power transmission, delivery, and substation systems, we exceed client expectations at every turn. Our reputation and relationships with utility companies, specialized equipment, low customer impact, and efficient union crews have provided our clients with savings for consumers and businesses. We optimize voltage, create energy efficiencies, and plan for safety in future contingencies.

  • Water Chillers – Centrifugal Absorption
  • Cooling Towers
  • Screw & Reciprocating Fan Systems
  • Computer Room Air Conditioning Equipment
  • Boilers – Steam and Hot Water
  • Pumps – Heating/Cooling/Booster/Ejectors
  • Temperature Controls – DDC
  • Electric and Pneumatic
  • Rooftop HVAC Equipment
  • Refrigeration Equipment
  • Chemical Water Treatment

Recent Projects

City of Chicago Maintenance

Mechanical maintenance on the city of Chicago buildings.

UIC Boiler Installation

Installed a new boiler to regulate temperature control.

Who We Serve

We are only happy when you are truly satisfied with the work that we have carried out and aim for excellence in everything that we do. You are more than welcome to get in touch with us at any point if you do have any queries about any of the services that we provide. We are also incredibly passionate about giving back to the local community and are regularly involved in various philanthropic projects.

MZI Group Services

Proudly headquartered in the heart of Chicago, Illinois MZI Group, Inc. is a leader in electrical and mechanical construction, telecommunications, energy infrastructure, utility projects, plumbing, design build and facility services.


At MZI, we are proud to be one of the leading suppliers of electric solutions in the Midwest and across the nation. We have an extensive background in providing first-class electric solutions and relationships with utility providers to make it seamless.  

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Power & Utility

As specialists in power & utility, we provide comprehensive solutions to even the most complex challenges. With established partnerships in the industry, MZI can successfully manage projects of all sizes that achieve excellence.  

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Building Services

Our highly specialized labor force, as well as our fully integrated system of services, allows us to deliver outstanding value in facility management. We optimize our services for clients to receive the highest level of care.  

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Serving a wide range of clients from the public and private sectors, we specialize in the design-build and plan-spec of commercial and industrial heating, ventilation and cooling systems.

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With over 100 years of experience, our deep industry expertise, digital innovation, and utilization of leading-edge technology drives tangible success in connecting clients and communities across the nation. 

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Exceeding client’s expectations, while providing quality and best-in-class results, we implement installations for commercial, educational, healthcare, hotel, and industrial facilities both direct to building engineers and direct to owner.  

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