• 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.

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  • 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.

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21x21x5 Filters



What Our Customers Have to Say

Marilyn 1 day ago
5
My HVAC technician just installed the filter with my annual furnace clean and check service, he confirmed filter is of top quality. Thank you.
Janet G. 1 day ago
5
Always use MERV 11 due to allergies
William 1 day ago
5
Quick delivery,quality product, always good to deal with company!
Disappointed 1 day ago
5
This is my second order for these replacement filters. They work great even in pollen season! I really appreciate they fit my furnace perfectly and measurements on the actual filters are exactly as specified in the listing, and the construction is solid and secure when inserting and removing. I confess I'd tried some filters from a cheaper online place, and the measurements of the actual product were off enough from the specs that the filter was too loose in my hvac, which just defeats the purpose and I had to toss them. Went right back to a new order of these - each one is exactly the size advertised and well constructed. Excellent product that does exactly what it needs to do!