• 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.

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  • 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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16.375x21.5x1 AIRx ALLERGY Air Filter, 4-Pack

5
126 reviews
◆
 
Average rating 4.8/5
5 stars
(109)
4 stars
(14)
3 stars
(1)
2 stars
(0)
1 star
(2)
AIRx 16.375x21.5x1-ALLERGYOur#: 194489
Made in USA
16.375x21.5x1 AIRx ALLERGY Air Filter, 4-Pack
16.375x21.5x1 AIRx ALLERGY Air Filter, 4-Pack
16.375x21.5x1 AIRx ALLERGY Air Filter, 4-Pack
16.375x21.5x1 AIRx ALLERGY Air Filter, 4-Pack
16.375x21.5x1 AIRx ALLERGY Air Filter, 4-Pack
16.375x21.5x1 AIRx ALLERGY Air Filter, 4-Pack
16.375x21.5x1 AIRx ALLERGY Air Filter, 4-Pack
16.375x21.5x1 AIRx ALLERGY Air Filter, 4-Pack
16.375x21.5x1 AIRx ALLERGY Air Filter, 4-Pack
16.375x21.5x1 AIRx ALLERGY Air Filter, 4-Pack
16.375x21.5x1 AIRx ALLERGY Air Filter, 4-Pack
16.375x21.5x1 AIRx ALLERGY Air Filter, 4-Pack
Compatibility guarantee — Wrong fit or not happy - we'll make it right, up to a whole year
Change every 3 months
Change every 3 months Swap on schedule for best performance
Made with pride in Greenwood, Indiana
Made with pride in Greenwood, Indiana Your purchase supports American jobs
MERV
MERV Find your ideal filtration level
Compatibility guarantee
Compatibility guarantee Wrong fit or not happy - we'll make it right, up to a whole year

Filter Description

If you want to promote superior air quality in your home, this is the air filter for you! The specialized media in the filter attracts and captures small particles that can cause allergies. We carry your size of air conditioner filter or furnace filter. We offer convenient online ordering and quick shipping right to your door!
Pleated media provides extended surface area for filtration, and low resistance to airflow
MERV 11 rating means the filter attracts household allergens like dust, pollen, mold spores, dander, smoke and smog
Replace every 90 days under normal use
Made with pride in the USA
100% free returns on all filters

$71.88

$89.85
Code DF20 · Save 20%
$17.97 per filter
Code DF20 · Save 20%
SAVE 0% 4-pack
In Stock, Ships onFriday, Oct. 2nd
Only $70.00 more for free shipping! Add this — just more for free shipping! Buy this and your order ships free!

Orders over $70 ship free. $5.99 otherwise.

Your Order Ships Free!

Compare Side-by-Side

MERV Filter Comparison

Choose the filtration level that fits your home — then tap Select to update your cart above.

MERV 8
Standard
DUST
RECOMMENDED
MERV 11
Superior
ALLERGY
OPTIMAL
MERV 13
Optimal
HEALTH
Best For
STANDARD
Residential / Commercial
Healthy Families
SUPERIOR
Residential / Commercial
Allergy Sufferers
OPTIMAL
Residential / Commercial
Premium Protection
Comparable
Ratings		 MPR 600 & FPR 5 MPR 1000–1200 & FPR 7 MPR 1500–1900 & FPR 10
Filtration Captures ≥90% of large particles Captures ≥95% of large particles Captures ≥98% of large particles
Dust, Lint & Debris
Mold, Pollen
Dander, Dust Mites
Smoke & Smog
Bacteria
Odor, VOCs
Your
Filter
MERV 8
Standard
DUST
Best For Residential / Commercial, Healthy Families
Comparable MPR 600 & FPR 5
Filtration Captures ≥90% of large particles
Dust, Lint & Debris
Mold, Pollen
Dander, Dust Mites
Smoke & Smog
Bacteria
Odor, VOCs
RECOMMENDED
MERV 11
Superior
ALLERGY
Best For Residential / Commercial, Allergy Sufferers
Comparable MPR 1000–1200 & FPR 7
Filtration Captures ≥95% of large particles
Dust, Lint & Debris
Mold, Pollen
Dander, Dust Mites
Smoke & Smog
Bacteria
Odor, VOCs
OPTIMAL
MERV 13
Optimal
HEALTH
Best For Residential / Commercial, Premium Protection
Comparable MPR 1500–1900 & FPR 10
Filtration Captures ≥98% of large particles
Dust, Lint & Debris
Mold, Pollen
Dander, Dust Mites
Smoke & Smog
Bacteria
Odor, VOCs

Swipe or use arrows · tap to select

MERV (Minimum Efficiency Reporting Value) is an ASHRAE industry standard for measuring air filter efficiency.

Compatibility guarantee

Wrong fit, leak, or just doesn’t work? We’ll send the right one. Free return shipping for all orders.

365-day satisfaction

Not happy? Send it back any time in the first year — we’ll make it right. Yes, even an open pack you’ve been running for months.

No-hassle returns

No restocking fees, no return-merch authorization mazes — just start a return and our helpful Customer Experience team will assist.

Filter Maintenance

Is it time to change your Filter?

Generally, we recommend you replace your air filters every 90 days. Find out below if you should change your filters more often.

If someone in your home has asthma or allergies change your filter every

6 Weeks

to ensure indoor air quality is at its best.

If you have pets change your filter every

2 Months

to avoid shedding and odor buildup.

If you have young children change your filter every

2–3 Months

as having clean air is even more important with children in your home.

Filter Specifications

What does this filter remove?

Filtration capabilities
Nominal Size
16 ½ × 21 ½ × 1"
Actual Size
16 ⅜ × 21 ½ × ⅞"
Filter Media
Electrostatically charged 100% synthetic gradient media that does not support microbiological growth
Filter Support Grid
30 gauge galvanized expanded metal grid
Frame
Moisture resistant double-wall beverage board
Max Temperature
180F (82C) continuous service, peak 225F (107C)
Max Humidity
Resistant to 100% R.H.
Initial Resistance
0.18" WC
Rated Velocity
295 FPM

Performance Testing

Replaces These Filters

Bryant / Carrier

KFAFK0212MED

National Filter Sales

PF-02-16.375x21.5x01-6

About This Product

Is this the right air filter for you?

If you want to promote superior air quality in your home, this is the air filter for you!   The specialized media in the filter attracts and captures small particles that can cause allergies.   We carry your size of air conditioner filter or furnace filter.  We offer convenient online ordering and quick shipping right to your door!

  • Pleated media provides extended surface area for filtration, and low resistance to airflow
  • MERV 11 rating means the filter attracts household allergens like dust, pollen, mold spores, dander, smoke and smog
  • Replace every 90 days under normal use
  • Made with pride in the USA
  • 100% free returns on all filters

Customer Reviews

4.8 4.8 out of 5 stars
126 verified reviews
5★
(109)
4★
(14)
3★
(1)
2★
(0)
1★
(2)
5
4.8 / 5 (126)
Linda 1 day ago
5
Love yhis company, their customer service team and the price for quality. I buy the Merv 11 for AC system (I have allergies and these are great filtration), refrigerator and also shower filters. My skin appreciates the loss of chlorine and my skin doesnt itch since using these in my shower. Happy Customer here!
Don K. 14 days ago
5
I've been using these for about 10 years and I've never had a problem with them. Shipping was good and affordable. Very sturdy frames on these filters too.
hector c. 57 days ago
5
Good quality and very fast delivery
Stephanie T. 214 days ago
5
We have been using these filters since we moved into the home 6 years ago. Great quality, reasonable price, and quick delivery
Charles E. 399 days ago
5
Great quality for the money fits correctly and works excellent with the heating and cooling system
Wayne R. 427 days ago
5
They out perform the store bought one I used before. Fit my unit perfect.
Don K. 621 days ago
5
This is a great filter. It does a great job and keeps my air clean
charles T. 677 days ago
5
the exact right size
Charles E. 737 days ago
5
I have been using these filters for several years and I am very well pleased with them and they fit perfect
William H. 742 days ago
5
Delivery was prompt and the order was exactly what I ordered.
Wayne R. 764 days ago
4
Really great, but tight fit.
Annette P. 770 days ago
5
This is a very good filter. It usually lasts three to four months for me.
Customer 777 days ago
5
I really like this product , was wondering if there is an even better more efficient filter?
Amy 802 days ago
5
Love these filters
Linda H. 818 days ago
5
Easy to obtain & have on hand.
Customer 1133 days ago
5
I have been happy with the air conditioner filters.
George M. 1139 days ago
5
Perfect fit. Great quality.
Dave F. 1240 days ago
5
Arrived earlier than expected, packaged well and in good condition. This was my third order and I have also been using the refrigerator water filters as well. I don't support China and when possible, I support American companies.
Michael T. 1470 days ago
5
Quick service
kenneth s. 1656 days ago
5
Always a pleasure to do business with. Website is easy to navigate and delivery was fast. Product as advertized.
Maciej S. 1664 days ago
5
After I bought it and installed I went to Home Depot and discovered that I can buy same size and quality filters for about $2 less per unit
Linda 1797 days ago
5
Thank you for your great service over the years.
Ina R. 1810 days ago
5
Works fine for me
Serina S. 1900 days ago
5
Great customer service!
Terry A. 1936 days ago
4
I like the size, fits great. I have not found anyone here that carries that size. However, the shipment was crushed. The out side box had been crushed, so the filters were also crushed. The filters were loose inside, maybe some better packing would help. I really needed the filters, so I bent them back into shape. I think they will be okay, time will tell.
Rachelle K. 1947 days ago
5
Best deal, customer service is fabulous Questions always explained & answered
Margaret L. 2003 days ago
5
Fantastic product. I changed it after 3 months and couldn’t believe how much dust/dirt was filtered from the air. I’ve noticed much less dust in my house too!
Michael D. 2011 days ago
5
Easy to reorder and trust high quality. Fast shipping, too!
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