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 discountfilters.com, we offer a world class selection of air and water quality products. The NTSupply.com family of websites are backed by industry experts with an obsession for top notch customer service. Visit DiscountFilters.com.
National Trade Supply By The Numbers
satisfied customers in the NT network of sites.
of orders placed on our sites will ship the same day.
charities proudly benefit from NT's philanthropic programs.
customer satisfaction. Anything less is unacceptable.
we stock over
of what we sell in our Greenwood, Indiana warehouse.
square feet are required to house our 2500+ stock air and water filter sizes.
years of safe and secure e-commerce transactions.
truckloads of corrugated cardboard each year.
pounds of salad are devoured weekly from the complimentary NT salad bar.