BBB Accredited Business Profile

Oak Brook Mechanical Services, Inc.

Oak Brook Mechanical Services, Inc.

(630) 941-3555

Oak Brook Mechanical Services, Inc.

41 years in business
961 S Il Route 83
Elmhurst, IL 60126-4993
Fax Numbers
  • (630) 941-0294
Additional Email Addresses
BBB File Opened: 10/07/2008
Business Started: 05/01/1975
Business Started Locally: 05/01/1975
Type of Entity
Business Management
  • Mr. Mark Sullivan, President
Contact Information
  • Principal: Mr. Mark Sullivan, President
Business Category
  • Air Conditioning Contractors & Systems
  • Air conditioning & Heating Contractors - Residential
  • Air conditioning & Heating Contractors - Commercial
  • NAICS: Plumbing, Heating, and Air-Conditioning Contractors



Oak Brook Mechanical Services, Inc, is an air conditioning contractor which installs and services heating, air conditioning, and ventilation systems. Located in Oak Brook, IL, this company serves much of Cook County, including Brookfield, Chicago, Orland Park, and Elk Grove Village. This company started in 1975 and has serviced many civic, state, and federal buildings, including Argonne National Laboratories, Fermi Lab, Brookfield Zoo, Chicago State University, Fenton High School, and the Orland Park Police Station. President Frank Kelly has over 49 years of experience in the heating, ventilation, and air conditioning industry, and other members of the team have twenty to fifty years as well.

This company provides the following services: cooling and heating equipment installation; service and maintenance of cooling and heating equipment; natural compressed gas installation; piping; engineering, planning, and project management; temperature and humidity controls; system renovation; and energy management. They provide maintenance programs for all mechanical equipment, which includes preventative maintenance. Their limited coverage plan includes seasonal start-up, shut-down, tower draining, and winterizing. They can also create a customized plan for the business's specific equipment, and emergency service is available 24 hours a day, seven days a week. Oak Brook Mechanical Services is an authorized servicer for Weather-Rite, Carrier, Mitsubishi, Toshiba, Dunham Bush, Johnson Controls, Larrs, Munchkin, and other brands.

Visit the website for Oak Brook Mechanical Services, Inc, to view their full list of services and past projects, learn more about the brands they are authorized to service, and contact them for installation or service of air conditioning and heating equipment.

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Oak Brook Mechanical Services, Inc.

Oak Brook Mechanical Services, Inc.


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