PRODUCTS & VENDORS BRANCH LOCATIONS NEWS & PROMOTIONS EVENTS & TRAINING CONTACT US PAY MY BILL WHOLESALE DISTRIBUTORS REFRIGERATION, HVAC & FOOD SERVICE EQUIPMENT About Us Careers eCommerce Pay My Bill Search for: Products & Vendors Our Company News & Promotions Events & Training Contact Us Pay My Bill Vendor Spotlight REZNOR UNIT HEATERS In Stock at Duncan Supply! Learn More 1234 WELCOME TO DUNCAN SUPPLY COMPANY INC. Since inception in 1936, Duncan Supply Company has taken pride in delivering the highest quality and best value to our customers. This philosophy has helped us grow into an industry leader, distributing a wide range of refrigeration, air conditioning, heating equipment, and accessories to customers, throughout central Indiana and Illinois. LISTEN: An interview with our President and his story with Duncan Supply on a local podcast called Circle City Success Read More BRANCH LOCATIONS View A Map Of Our Branches BECOME A VENDOR Have new innovating products that Duncan Supply Company needs to sell? Start the process below to become a partnering vendor of Duncan Supply Company. Start The Process BECOME A CUSTOMER Interested in becoming a customer of Duncan Supply Company? For more information, click below to start the process. Start The Process QUICK LINKS Products & Vendors News & Promotions eCommerce Events & Training About Us Contact Us Careers Branch Locations CONTACT INFO 910 N. Illinois Street Indianapolis, IN 46204-1087 P: 800-382-5528 CONNECT Copyright © 2017 Duncan Supply Company, Inc. SITE BY NEXTFLY