For over 25 years Chicago Mechanical, Inc. has been a full service, design build mechanical contractor that offers unsurpassed solutions for facilities and buildings. We design, install, maintain and repair mechanical systems to provide healthy, comfortable work environments for all types of facilities. Our customers range in size from Fortune 500 companies to business facilities just starting out. Our core business is Emergency Service & Repairs, Preventive Maintenance Plans, Equipment Replacement and Indoor Air Quality.