Here at Duncan Supply, we pride ourselves on our diverse product lines, as well as our knowledgeable staff. From our 200+ different vendors, to the 13,000+ items in stock at all of our branch locations, Duncan Supply can be your one-stop shop for all HVAC/R needs. Need new equipment? Need parts or supplies? Stuck with a troubleshooting question and need an answer quickly? Need training on specific product lines for you and/or your staff? Want the convenience of shopping online and viewing live inventory levels from the convenience of your own shop? As a customer of Duncan Supply, we can provide you with all of the above.