Providing Clean Air, Clean Water, Comfort & Energy Efficiency

NT Supply - Providing Clean Air, Clean Water, Comfort & Energy Efficiency

National Trade Supply, LLC

Founded as a HVAC e-commerce site in 2002, National Trade Supply has transformed into a group of highly specialized and diverse e-commerce sites and services. We are dedicated to offering products that provide comfort, clean air, clean water, and energy efficiency.


Led by our flagship site, we offer a world class selection of air and water quality products. The family of websites are backed by industry experts with an obsession for top notch customer service. Visit

Contractor ServicesContractor Services

We work with several large HVAC contractors across the country to provide customized filter delivery services. In addition to keeping the customer's equipment in top condition, these unique services help build contractor brands and insure customer retention. Contractors can contact us [javascript protected email address]

FilterChange Utility PartnershipUtility Partnerships has joined forces with over 50 of the nation's top gas and electric utilities to create FilterChange™. Together we offer a program that helps save energy by supplying filters and through building consumer awareness of the importance of regularly changing your HVAC filters. Utility companies can find more information [javascript protected email address].

NT Supply Business 2 BusinessOEM Solutions

By collaborating with our OEM partners, we are able to use NT technology and distribution channels to build unique programs for Air and Water Filter manufacturers. These custom programs can include, marketing, fulfillment, call center and customer service. Contact [javascript protected email address] for more information.

National Trade Supply By The Numbers

  • over 3,000,000

    satisfied customers in the NT network of sites.

  • more than 90%

    of orders placed on our sites will ship the same day.

  • over 20

    charities proudly benefit from NT's philanthropic programs.

  • satisfaction guarantee 100%

    customer satisfaction. Anything less is unacceptable.

  • we stock over 98%

    of what we sell in our Greenwood, Indiana warehouse.

  • over 68,000

    square feet are required to house our 2500+ stock air and water filter sizes.

  • over 10

    years of safe and secure e-commerce transactions.

  • we recycle 12

    truckloads of corrugated cardboard each year.

  • approximately 75

    pounds of salad are devoured weekly from the complimentary NT salad bar.