Leading Commercial HVAC Service Company

F.E. Moran Mechanical Services is a preeminent mechanical service contractor in the Chicago area. We provide all services for heating, ventilation, air conditioning, air and water balancing, building automation systems and system commissioning. Plus, we offer 24/7/365 emergency service on all types of mechanical equipment — from small rooftop units to large centrifugal chillers. We respond to all service calls promptly and professionally.

With two office locations, we  provide commercial HVAC maintenance and repair services across the Chicagoland area. Our corporate office is located in Northbrook and our second office is in Lemont.


Your facilities demand specialized service and maintenance solutions from reputable experts who can not only demonstrate the in-depth knowledge and experience required to handle the unique complexities of your HVAC projects, but the resources to meet demanding schedules on time and on budget.

F.E. Moran Mechanical Services has been selling, installing, maintaining, and repairing complex HVAC and building automation systems for commercial, medical, industrial, and institutional facilities for over 60 years. Our journeymen service technicians, sheet metal workers, and pipefitters are regarded as the highest-trained professionals in the HVAC industry and maintain certifications through continual training, development, and testing programs. 

We ensure an optimal performance that minimizes system failures, reduces operating costs, and saves you money through improved efficiencies that increase the useful life of your equipment.

Services & Capabilities

  • Design & Build Solutions
  • Site assessments
  • Commercial cooling & heating installations
  • Preventive maintenance service agreements
    • Maintenance only service agreements
    • Full Coverage service agreements
    • 24/7/365 emergency service availability
    • 3-hour response times
  • Medical chillers
  • Building Automation Systems
    • Featuring Computrols© equipment
    • Monitoring & Maintenance agreements
  • Ventilation
    • Commissioning
    • Air balancing
  • Indoor air quality testing and solutions
  • Mechanical rooms
    • Boiler, pumps, and chiller service
    • Water balancing
    • Commissioning
  • Equipment replacement
  • End of useful life forecasting and budgets

Skilled Commercial HVAC Installers

Our pipe fitters, members of the Pipe Fitters Union Local 597, are experienced in steam, hot water, chilled water, condenser water, compressed air, natural gas, refrigerant, medical gas and other piping specialties.

Our sheet metal workers are members of the Sheet Metal Workers Union Local 73. They install low pressure, medium pressure, spiral and stainless-steel ductwork.

Top-Quality Service Technicians

F.E. Moran Mechanical Services provides a top-quality service technician to every customer. We take the time to nurture our service technicians through extensive in-house training programs, as well as providing one-on-one mentoring with the senior journeymen. The average service technician has been with our company 12 to 15 years.

Our technical support system, through our supervisory structure, is unique to F.E. Moran Mechanical Services. We maintain a comprehensive internal supervisory staff made up of the finest senior technicians who provide technical support for all service operations on a day-to-day basis. Our supervisory staff also oversees the quick turnaround for all quoted work, service sales and service repairs.

All supervisors and managers are former service technicians and have been with the company for 15 to 20 years. All service department senior managers have field experience in addition to being employed by us for an average of 25 to 30 years.

UA S.T.A.R. Certified Technicians

We are particularly proud to be the first Mechanical Services Contractors of America (MSCA) UA S.T.A.R. Certified contractor in the United States, and still one of only a few mechanical services contractors nationwide that has achieved this certification. Each F.E. Moran Mechanical Services journeyman service technician is individually UA S.T.A.R. Certified.

This certification means that our service technicians are among the best-trained heating and cooling professionals in the industry. Those earning this honor have completed a stringent five-year training program and passed the UA S.T.A.R. certification exam.

In addition, all our service technicians continually receive education and training on the latest equipment and procedures through various manufacturers’ training facilities, in-house personnel training and the Pipe Fitters Union. Our technicians have completed the OSHA 10- or 30-hour Occupational Safety and Health Training Course in construction safety.

Focus on Safety

  • Safety incentive and accountability programs
  • Extensive hazard identification & correction process
  • Pre-job and pre-task safety analysis
  • Job-site safety audits
  • New hire training and onboarding
  • Driving safety programs
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