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 History
  
In early 1993, Hill Mechanical Operations, Inc. merged forces with Environmental Operation, a Chicago area firm under the leadership of William H. Byerley. The resulting new affiliate of Hill Mechanical Group became known as Hill Environmental Operations, Inc. (HEO).
HEO’s affiliation with Hill Mechanical Group, Illinois’ largest trade contractor, enables Hill Environmental Operations to draw upon 65+ years of experience in heating ventilating, air conditioning, plumbing, refrigeration, sheet metal fabrication, and electrical contracting. This depth and breadth of resources means clients can rely upon us to consistently deliver high quality service, even in emergency situations. This commitment is how we’ve become one of the leading suppliers of Operating Engineers in the Chicagoland area, with over 150 professionals operating approximately six million square feet of commercial space. |
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11045 Gage Avenue
Franklin Park, IL 60131
Phone: 847-451-5000Fax: 847-451-5611Contact Us
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