Providing Clean Air, Clean Water, Comfort & Energy Efficiency
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.Learn more
Meet Our Brands
NT Supply carries a variety of brands to help home owners achieve their ideal water and air quality in their homes.
DiscountFilters.com is staffed by homeowners just like you. We know buying replacement air, furnace, and water filters for your home or business can be a challenge, especially if it's your first time. Finding the proper filter that meets your personal and financial needs is crucial to being satisfied with your purchase.View Website
Let the experts at FilterOutlet.com be your partner to keep healthy, fresh, great-tasting air and water flowing in your home. New home? New refrigerator? New HVAC unit? We can help. We carry the most popular and common filters on the market, all offered at the best prices you'll find anywhere.View Website
Our mission is to build quality air filters at an affordable price to keep people safe and industries thriving. We are thinking beyond the filter to protect the people and processes that power the world.View Website
Our ClearChoice fridge filters are made in our factory headquartered here in Indiana, with great attention to quality. Don’t settle for poorly-made Chinese knock offs or overpriced OEM models.
DF Filter Pro
DFFilterPro is a full service distributor focused on creating maximum value for our customers at every opportunity. We have the capability and flexibility to meet specific customers operating requirements.View Website
About National Trade Supply
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.
Our Facility & Crew
We truly are a family here at NT Supply. Located in Greenwood, Indiana we are a close knit team that enjoys cookouts, community involvement, amazing Halloween parties and movie nights!
We don't like to brag much, but here are just a few of the awards we've received over the past 15 years.
25 Fastest-Growing Indianapolis Area Private Companies
NT Supply was listed as one of the 25 Fastest-Growing Indianapolis Area Private Companies in 2007 and 2010 by the Indiana Business Journal (IBJ). This award recognizes Indianapolis area's fastest-growing companies. In 2007, NT Supply soared to the number one spot of IBJ's 25 Fastest-Growing Indianapolis Area Private Companies by increasing their revenue by 592 percent.
Indiana Companies to Watch
This award is given to high-performing companies located in Indiana, which have a big impact on the state's economy by providing jobs and creating revenue. These businesses are 'known for their performance in the marketplace, innovative products, and unique processes or philanthropic actions.' NT Supply was given this award in 2008.
Internet Retailer Top 500
NT Supply has won this award for eight years in a row! We first received this award in 2006 and have been listed as a top 500 e-commerce business every year since then. It's quite rewarding to know our business is considered one of the largest e-retailers in the U.S.
Inc. 500 America's Fastest Growing Companies
National Trade Supply won this award in 2008, which was quite exciting since it meant we were one of the year's fastest-growing private companies in the United States. Over the last few years NT Supply has grown immensely with the creation of our flagship site DiscountFilters.com. Inc. 500 was created in 1982 to recognize the fastest-growing privately owned companies in the United States. The annual list of America's 500 Fastest Growing Companies is published each year on Inc.com and in the Inc. magazine.
Inc. 5000 Fastest Growing Private Companies in America
It's quite an accomplishment to be listed as one of Inc. 5000's Fastest Growing Private Companies in America, but to have done so for six consecutive years is something even we find somewhat amazing. In 2013, NT Supply received the Inc. 5000 Fastest Growing Private Companies in America Honor Roll Inductee for Six Consecutive Years award. It was a true joy for us to receive this award since it showcases all our hard work over the last few years. Other companies who have received this award include Microsoft, Zappos, Under Armour and Pandora.
Our flagship website, DiscountFilters.com, has received this award for two consecutive years. This award mainly recognizes businesses for great customer service. In fact, 'StellaService' rates the customer service performance of thousands of online stores to highlight the best places to shop on the web. They use objective, unbiased data to determine what e-commerce businesses are eligible for displaying the StellaService seal. Some of the other businesses that have received this award and are able to display the StellaService seal include Foot Locker, Nautica, and GNC.
Bizrate Circle of Excellence
The Circle of Excellence is given to online retailers that have provided customers with outstanding online experiences throughout the previous year. DiscountFilters.com has received the platinum version of this award two years in a row. Each year, online retailers that qualify for this award are graded based on client feedback covering seven key satisfaction categories. Overall, NT Supply has been awarded the Bizrate Circle of Excellence award a total of four years. Check out the press release for this award here.