• 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.

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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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13x21.5x1 AIRx DUST Air Filter, 12-Pack

5
72 reviews
◆
 
Average rating 4.9/5
5 stars
(63)
4 stars
(8)
3 stars
(1)
2 stars
(0)
1 star
(0)
AIRx 13x21.5x1-DUSTOur#: 181416
Made in USA
13x21.5x1 AIRx DUST Air Filter, 12-Pack
13x21.5x1 AIRx DUST Air Filter, 12-Pack
13x21.5x1 AIRx DUST Air Filter, 12-Pack
13x21.5x1 AIRx DUST Air Filter, 12-Pack
13x21.5x1 AIRx DUST Air Filter, 12-Pack
13x21.5x1 AIRx DUST Air Filter, 12-Pack
13x21.5x1 AIRx DUST Air Filter, 12-Pack
13x21.5x1 AIRx DUST Air Filter, 12-Pack
13x21.5x1 AIRx DUST Air Filter, 12-Pack
13x21.5x1 AIRx DUST Air Filter, 12-Pack
13x21.5x1 AIRx DUST Air Filter, 12-Pack
13x21.5x1 AIRx DUST Air Filter, 12-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 protect your HVAC system, keep your house a little cleaner, and remove a few nuisance particles from the air you breathe then yes, this is the filter for you! Not everyone needs to get rid of odors, and not everyone is overly sensitive to allergens and other, more harmful, particulates in their air. We make shopping for air conditioner filters and furnace filters easy!
Entry-level pleated air filter offers improved filtration over common fiberglass filters
MERV 8 rating means the filter attracts common large household allergens like dust, pollen, and mold spores
Replace every 90 days under normal use
Made with pride in the USA
100% free returns on all filters

$129.95

$162.44
Code DF20 · Save 20%
$10.83 per filter
Code DF20 · Save 20%
SAVE 0% 12-pack
In Stock, Ships onWednesday, Sep. 30th
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
13 × 21 ½ × 1"
Actual Size
13 × 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 Filtersss

Bryant / Carrier

KFAFK0112SML

National Filter Sales

PF-01-13x21.5x01-6

About This Product

Is this the right air filter for you?

If you want to protect your HVAC system, keep your house a little cleaner, and remove a few nuisance particles from the air you breathe then yes, this is the filter for you!  Not everyone needs to get rid of odors, and not everyone is overly sensitive to allergens and other, more harmful, particulates in their air.  We make shopping for air conditioner filters and furnace filters easy!

  • Entry-level pleated air filter offers improved filtration over common fiberglass filters
  • MERV 8 rating means the filter attracts common large household allergens like dust, pollen, and mold spores
  • Replace every 90 days under normal use
  • Made with pride in the USA
  • 100% free returns on all filters

Customer Reviews

4.9 4.9 out of 5 stars
72 verified reviews
5★
(63)
4★
(8)
3★
(1)
2★
(0)
1★
(0)
5
4.9 / 5 (72)
Eric 254 days ago
5
Good quality materials and good price.
Stacy C. 631 days ago
5
No computer ordering. Friendly customer service, had the filter I needed, thanks.
Robert L. 735 days ago
5
Quality custom sized filters at a reasonable price.
Richard E. 978 days ago
5
Look good and shipped really fast.
Richard E. 978 days ago
5
Looks like they'll do the job. Hard to find this size!
Henry F. 1020 days ago
5
Very good
Robert K. 1043 days ago
5
Well constructed, could not find this size readily available at the big box store
Robert L. 1131 days ago
5
These are special order sizes filters, and I get them in timely delivery.
Werner F. 1147 days ago
5
Excellent product at a great price. I’m glad your company is there!!
Catherine A. 1473 days ago
5
I have been buying filters from your company for years! That should speak for itself! Cat Armstrong
Parth P. 1691 days ago
5
Great product and fast shipping nvery good company for filters
Sandy S. 1761 days ago
5
It’s hard to find the filters I need for my heat pump any other place.
Kenneth O. 1837 days ago
5
Sent the correct items on time, very easy to order on line.
Shirley M. 1949 days ago
5
Quick and easy ordering. Faster delivery
helen m. 2025 days ago
5
Very hard to find size since u have it it is easy to order. And receive
Jim M. 2030 days ago
4
Just a very good product
Lawrence F. 2198 days ago
5
It's a custom size so I can't purchase it off the shelf. It fits perfectly. Got here in promised time.
Dennis C. 2312 days ago
5
Odd size glad you care it, thanks
Customer 2373 days ago
4
Since I’ve begun using these filters, I don’t have so much dusting to do. ?
Alan 2400 days ago
5
. this size filter is not available at any of the "big box stores". good product, good price, fast delivery - will continue to order from you!
Judy T. 2442 days ago
5
will definitely order again.
John C. 2449 days ago
5
This is a very good filter for the price. I have purchased filters costing 50% more that were not this good.
Tim n. 2470 days ago
5
I appreciate the quality make of the filter
Karen W. 2508 days ago
5
Great company and great product!
Shirley V. 2543 days ago
5
Very happy with the filters. Needed a odd size and you produced. Thank You
Robin C. 2550 days ago
5
I received the wrong size filters, called to let them know, they were very friendly, apologized for any inconvenience and shipped the correct size the very same day. Also, didn't have me return the first ones but asked me to donate them. Exceptional customer service!
Larry K. 2620 days ago
5
Very efficient.
Alan 2640 days ago
5
Good: product, price and delivery
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