New Customers

Key Wholesaler Specials!

Key Wholesaler Specials! As a member of Key Wholesaler Group, this month we are proud to be working with Nu-Calgon!  Check out their featured products by contacting your local DSC Branch for more information.


Get the Deals!

Branch Locations

Branch Locations Looking for a branch of Duncan Supply near you? Visit our branch location page to find out how close you are.

View a map of our branches

Check out the news!

Check out the news! Don't forget to check back frequently under News & Promotions to see what Duncan Supply has to offer to you as a customer. And learn about the leading headline news in the HVAC/R industry.

News & Promotions

The Last Supply House That You'll Ever Need

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 and 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.

Click Here to contact Duncan Supply to find out more about becoming a customer.