It all started in 1975, when Oak Brook Mechanical Services, Inc. (OMS) was created as an HVAC service contractor. In the succeeding 35 years, we have grown into one of Chicagoland's largest and best installing and servicer companies. We service a wide variety of HVAC equipment and piping. We have successfully branched out into engineering and planning, renovation of existing systems and today's all-important energy management. OMS is a certified welding bureau contractor and a proud member of ASHRAE, The American Society of Heating, Refrigeration and Air-Conditioning Engineers.
OMS began as an HVAC service contractor in 1975. Even through our rapid growth in the succeeding 35 years, we have never lost sight of our strong commitment to service. Today, we service what we sell and install, as well as other installations, with the same degree of professionalism. We offer complete programs for 100% coverage of all mechanical equipment on your premises, as well as preventative maintenance programs. Our limited coverage option includes seasonal start up, shut down, tower draining and winterizing.
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