• Spend $70 or more and your order ships free! We'll get your filters out the door fast so you can enjoy clean air and water.*

    * Orders under $70 ship for $5.99.

  • Shop with confidence! If you're not completely satisfied with your purchase, you have up to one year to return it for a refund or exchange. We stand behind every filter we sell.

    Learn More

  • Every order is carefully packed and shipped by our team in Indiana. Your purchase helps support American jobs and hardworking families right here in the Midwest. Our AIRx Furnace / AC Filters and ClearChoice Fridge Filters are made in the USA.

Cart 0

We don't know what's in your water,
but we know there's nothing in your cart.

Menu

  • Spend $70 or more and your order ships free! We'll get your filters out the door fast so you can enjoy clean air and water.*

    * Orders under $70 ship for $5.99.

  • Shop with confidence! If you're not completely satisfied with your purchase, you have up to one year to return it for a refund or exchange. We stand behind every filter we sell.

    Learn More

  • Every order is carefully packed and shipped by our team in Indiana. Your purchase helps support American jobs and hardworking families right here in the Midwest. Our AIRx Furnace / AC Filters and ClearChoice Fridge Filters are made in the USA.

Cart 0

We don't know what's in your water,
but we know there's nothing in your cart.

Menu

21x21x5 Filters



What Our Customers Have to Say

Rick M. 2 days ago
5
I originally had a hard time finding a replacement filter until I found it on your site. It was an exact replacement and it’s performing perfect. I will continue to use this site for future filter needs.
Sherrell 2 days ago
5
Prompt shipment, great prices
customer 4 days ago
5
Have use the filters from Discount Filters for several years and have never had any problems. This size filter is hard to fine at a reasonable price, but you cannot beat their price.
Stanley L. 5 days ago
5
I find ordering from your website has always been easy and helpful and the product is priced right!