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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.

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

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14x20x1 AIRx ALLERGY Air Filter, 4-Pack

5
186 reviews
◆
 
Average rating 4.7/5
5 stars
(158)
4 stars
(16)
3 stars
(7)
2 stars
(2)
1 star
(3)
AIRx 14x20x1-ALLERGYOur#: 193883
Made in USA
14x20x1 AIRx ALLERGY Air Filter, 4-Pack
14x20x1 AIRx ALLERGY Air Filter, 4-Pack
14x20x1 AIRx ALLERGY Air Filter, 4-Pack
14x20x1 AIRx ALLERGY Air Filter, 4-Pack
14x20x1 AIRx ALLERGY Air Filter, 4-Pack
14x20x1 AIRx ALLERGY Air Filter, 4-Pack
14x20x1 AIRx ALLERGY Air Filter, 4-Pack
14x20x1 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

$54.95

$68.69
Code DF20 · Save 20%
$13.74 per filter
Code DF20 · Save 20%
SAVE 43% 4-pack

Pack Size

Filtration Level

Compare all →
In Stock, Ships onThursday, Oct. 1st
Just $70.00 more for free shipping! Get this — more unlocks free shipping! Buy this and your order ships free!

Orders over $70 ship free. $5.99 otherwise.

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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
14 × 20 × 1"
Actual Size
13 ½ × 19 ½ × ¾"
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

Performance Rating

MERV (µm) PSE (%) 0.3-1.0 1.0-3.0 3.0-10 Airflow Rate (CFM) 287 430 574 717 574 * * Max Rated Airflow
11 29 68 86 Initial Resistance (IWC) 0.09 0.13 0.19 0.25 0.19 *
MERV
11
(µm) PSE (%)
0.3-1.0 29
1.0-3.0 68
3.0-10 86
Airflow Rate (CFM) Initial Resistance (IWC)
287 0.09
430 0.13
574 0.19
717 0.25
574 * 0.19 *
* Max Rated Airflow

Replaces These Filter

National Filter Sales

PF-02-142001-6

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

4.7 4.7 out of 5 stars
186 verified reviews
5★
(158)
4★
(16)
3★
(7)
2★
(2)
1★
(3)
5
4.7 / 5 (186)
Robert 86 days ago
5
Accurate fit and great product.
Shirley M. 164 days ago
5
They have worked real well for me.
Joyce T. 179 days ago
5
These filters help with dust and pollen control inside my house. For me, these are the best filters for my heating and ac unit.
Laurie C. 260 days ago
5
Great place to purchase filters of all kinds at a discount!
Les F. 287 days ago
5
I am very happy with the furnace filters that I bought I received the wrong size, but customer service was very helpful And corrected the problem. Thank you.
Ronald M. 344 days ago
5
Great filters, quick shipping and fair prices
Michael D. 371 days ago
5
Excellent product, sturdy well made.
Betty S. 444 days ago
5
Got my 12 months supply just recently. Good filters and fast shipping!
Dave S. 473 days ago
5
Very good quality, correct size easy to install and for a very good price. what more could you ask for.
Jerome H. 498 days ago
5
They are great.
Myra D. 594 days ago
5
The filters do a great job of filtering the air! I have cats, and litter dust, and I have seen a reduction in hair and dust.
Pam 635 days ago
5
Second time I have ordered these and I love how easy it is to order them.
Kenneth 647 days ago
5
Outstanding filters. I have always purchased my home AC/heater filters from DiscountFilters and have never been disappointed with the cost or the quality.
john l. 653 days ago
5
excellent product ,fast service. whats not to like?
Raymond H. 695 days ago
5
I have been using this filter for many years and it always works great.
Thomas M. 707 days ago
5
I have been ordering these filters from Discount Filters for several years now. They have a variety of filters in the size I require, they are always top quality, the pricesare cheaper than local retail sources, and they ship quickly.
Allan L. 707 days ago
5
Great product great value my house has less dust and also smells better
STACY B. 721 days ago
5
Excellent buy , good quality
S. N. 763 days ago
5
They work great, cost so much less. Very satisfied with them.
Ruth M. 774 days ago
5
Great. Quality
Marcia K. 776 days ago
5
Filters Work well
Cynthia A. 780 days ago
5
Good product, good price and having on hand with auto refill will encourage prompt replacement.
John F. 801 days ago
4
A good filter at a decent price during sale time.
S. N. 822 days ago
5
Works great and not as pricey as some of the others. I’ve told others about this web site
Angelo M. 822 days ago
5
Excellent made in U.S.A filters! Great value, and they work great. Have purchased filters of all kinds from Discount Filters for over a decade, and tell everyone I can about them. I will always purchase from Discount Filters. Thank you for a wonderful product!
BRIAN A. 885 days ago
4
Works good
Roy A. 885 days ago
4
Too early to tell.
Chequita B. 905 days ago
5
Great will purchase again
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