Our Services

Besides ACI's expertise in construction, our building services division, Comfort Systems USA, has grown to be one of the Midwest's premier Preventive Maintenance and Service providers. Because we know building systems, clients turn to us for ongoing support with occasional service and customized maintenance programs that optimize equipment performance and maintain design efficiency. In a word: We are your reliable HVAC provider.


Our technicians are not only professional and highly skilled; they are also on call 24/7/365. No matter what time, your call will be answered by a knowledgeable employee, not a recording. If you need to supplement your staff with specific expertise, we also provide on-site technicians for your HVAC systems to let your team focus on your core business.


The ACI Mechanical/Comfort Systems USA Midwest team can provide Preventive Maintenance agreements for any size commercial & industrial facility. If you are looking for a firm specializing in the commercial & industrial HVAC business, make an appointment today! One of our dedicated professionals will contact you to schedule a time that works for you.


  • Backflow preventer certification and repair.
  • Pump repair and maintenance.
  • Water heater and boiler repair and replacement.
  • Sanitary drain waste and vent systems.
  • Trench, floor, and roof drains.
  • Grease interceptors and sump pumps.


The Comfort Care program is unique to Comfort Systems USA affiliates. This maintenance program gives our clients the service they deserve by maintaining communication on a scheduled basis. Comfort Systems USA Midwest provides our maintenance and project customers a structured opportunity to meet with our CARE™ representative to review the services.

& Benefits

Comfort Systems USA is the leading single-source, nationwide provider of mechanical design-build and design-assist construction, facility automation, and integrated energy services. By joining Comfort Systems, ACI Mechanical became part of a premier contracting organization with nearly 90 operating locations across the United States and, at the same time, performs more than $1.7 billion of mechanical work annually. 

Ask for our Maintenance Preventive Program

Duct & Fittings

In-house duct fabrication means we can supply your project with ducts more promptly. Using advanced machinery, like our Iowa Precision Coil Line, cutting fittings on the plasma table, and orbital welder ensures that ACI builds with the accuracy required in our industry. In addition, all the ducts and fittings produced in our shop adhere to the latest SMACNA standards.
No project is too large or too small for the ACI team! Whatever your metal fabrication needs, we are here to help. Give us a call. The ACI team is helpful, competitive, and ready to meet your schedule. Our fabrication employees pride themselves on turning out a high-quality, better-than-expected product. Above all, let us exceed your expectations.
quality has proven

our credibility
has been proven

We offer a full turnkey experience for customers like you, with a single point-of-contact, fast-tracked project schedules, cost guarantees, and maximum management effectiveness.

Merit Shop ACI Mechanical

You can also call us for service on demand, Preventive Maintenance is the key.

Expert & Professionals Advisory Policy

Has the compressor in your commercial or industrial air conditioning system failed? No problem. Request a free estimate. Need a second opinion before you commit valuable resources to that expensive replacement? In conclusion, schedule a service call today.

100% Satisfaction Guarantee Through Work

  • Our customers choose us for a long list of good reasons
  •     The broad range of services we offer.
  •     Dispatching that uses the technical advantages of the latest technology
  •     Technical proficiency with all major equipment manufacturers
  •     A national footprint with a local presence
  •     Energy Star® partnership
  •     Member of the United States Green Building Council
  •     LEED® Accredited professionals in all our companies
  •     Proven operations and maintenance experience (including large-scale program implementation).                  

Another critical point: We can supplement your existing maintenance staff with our labor.

24x7 Customer Support Service Available

Mechanical Contractors & Engineers

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Mechanical Engineering & Construction
Mechanical Engineering & Construction