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About Us


ILLCO, Inc. was founded in 1929 as Illinois Supply Company, a consolidation of Divickey Brothers (plumbing & steam fitters supplies) and ILLCO (poultry supplies) and began its operations at 530 S. River Street in Aurora, Illinois. In the late 1950’s, the company began selling HVAC/R products and a separate department was set up for that purpose.

Recognizing its need for larger facilities, the building at 535 S. River Street was constructed in 1968. In 1973, new management purchased Illinois Supply and set in motion a program of growth and consolidation. Through this controlled growth and increased staffing, many expansions and new branch locations have helped spread the ILLCO name across the Chicagoland trade area and beyond. By partnering with manufacturers and customers, ILLCO continues to lead the market in innovation and customer service.


Today, ILLCO is one of Chicagoland’s largest distributors of refrigeration, heating, air conditioning, PVF, plumbing, and hydronic supplies. ILLCO offers only the finest manufactured materials available and is dedicated to keeping the highest levels of inventory on hand. ILLCO is also proud of its talented and hard-working employees who bring to their positions a high level of skill and commitment to customer service
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