AMS Mechanical Systems Commercial Business Group provides professional HVAC services in the design build, design assist, and the plan specification marketplace for both private and public commercial sectors. This group is comprised of Licensed Professional Engineers, experienced estimators and drafting personnel who together develop initial design concepts and budget pricing as well as provide practical and cost-effective design solutions to meet our clients’ desired building needs. Using our innovation, teamwork, and experience, we pull together every facet of the project from inception to completion to deliver an efficient and uncompromising system. In addition, our experienced service team offers a full cadre of programs to maintain the integrity and reliability of your system for years to come.

At AMS, we take pride in our dedication to every project. With a shared philosophy of listening and working closely with owners and owners’ representatives, we promote our involvement during the early stages of the project. The process of getting the project manager involved from the onset and working with design and estimating until the award is complete minimizes any disparity in the obligation of AMS. Once the award is made AMS incorporates its pre-job planning, stand and deliver and project exit programs to provide total collaboration, consistency and excellence in all aspects of the construction process to deliver uncompromising project results.

We are privileged that our most valuable asset, “our clients” continue to entrust AMS Mechanical Systems with their most complex and demanding projects, which require an open mind, continuous dialogue, unique design and planning, and above all a high-quality installation. For this trust, we are truly thankful.







Prefabrication Services


Design & Engineering


BAS/System Integration


Client Services



• Design/build/fabrication/installation
• Repair and retrofit
• Electrical
• Plumbing
• Heating
• Ventilation
• Air conditioning
• Medical gas systems
• Boiler plants
• Chilled water systems
• Refrigeration
• Processing controls
• System controls & Maintenance
• Full-system maintenance and 24-hour service support

Industries Served:

• Commercial
• Food processing
• Data centers
• Hospital/healthcare
• Education
• Petrochemical
• Pharmaceutical
• Hotel/Condominium/High-rise
• Tenant build-out
• Office/warehouse
• Tel-communications

Lurie's Children Hospital

See What Our Customers Are Saying

  • I just want to take a quick moment to commend your plumbing staff on the well-executed domestic water pump change out. I have never in my 30 years in the business seen a project go as smoothly and professionally as I have today. Your guys worked non-stop from 7am to make sure we were back on line with hot and cold water by 3pm when it was a scheduled shut down until 5pm.  I know that whatever the issue is her at the hotel Center, your plumbers as well as the two boss ladies Donna and Shannon get it done and make sure that our needs are met with priority. Thank you again for your professionalism and team work. BTW, Honorable mention to Frank for making sure the tank got done today and scoping this job two years ago. We love ya Frank, just not as much as everyone else, LOL!!

    - Robert Litavecz, Hampton Inn Midway

  • Good morning! The overnight job went off without a hitch.  Just wanted to thank you and your team at AMS for the great partnership we have created. The professionalism starting from the office and scheduling with Donna and Shannon,  to the service guys that always find a way to get the job completed. Steve Joyce and the Novak brothers are always a pleasure to work with and they are a great asset to AMS. They show great leadership and  we never have to micro manage them when they are here doing a job.  The other service guys  we have had the pleasure of meeting (Steve Rogers)  are very knowledgeable and answer any question we may have. Thank you again and look forward to doing future business with your outstanding team.

    - Palmer House

  • Rick,
    Just wanted to say thank you for pulling together the right people, at the right time, to get this project done at Kronos.
    Mark (plumber), Pete (air flow) and Fred (welding smoke testing, etc.)
    All were great to work with and very professional.
    Fred and Pete put in two long days and night for us and I really appreciate all they did.
    Please pass out some Kudos to your crew.
    Thank you

    Don Nordsell
    Senior Director of Manufacturing Operations

    - Kronos Foods Corp.

  • All,

    I just want to pass on what a great job Tony and Adrian did Tuesday night.  They did some really quality work and got it done well ahead of schedule.  I would gladly have them on any job.

    Many thanks,

    Earl Duff
    Project Engineer
    MSS Solutions, LLC

    - MSS Solutions, LLC

  • To : Mr. John Berzanskis, AMS

    Dear Sir,
    This letter is in recognition of the recent work done by your employees @ the Shell Des Plains terminal, in support of the Fire Foam Piping Replacement Project. Your employees, Cesar Acosta, Walter Rubio, Jay Omalley,  Sean Cusack, and led by Tim Dircks, performed an outstanding job of not only welding ( on gasoline storage tanks filled with gasoline ), but the professional manner in which they went about accomplishing their tasks. Their attitude concerning personal safety while doing these tasks was greatly appreciated by myself and I’m sure anyone else involved in this project. The personal interaction between themselves and others involved in the project reflected in the most positive manner on AMS and Local 597. If circumstances arise in the future where I have the opportunity to recommend this group of men, I will do so wholeheartedly and without hesitation. It’s always a pleasure to work with professional people. Please pass on my thanks to these men, and my appreciation for a job well done.

    Paul Tucker
    Const. Manager
    Integrity Inspection Services
    Representing Shell Pipeline

    - Shell Pipeline

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