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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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but we know there's nothing in your cart.

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20x25x2 AIRx ALLERGY Air Filter - MERV 11

5
58 reviews
◆
 
Average rating 4.8/5
5 stars
(51)
4 stars
(4)
3 stars
(2)
2 stars
(0)
1 star
(1)
AIRx 20x25x2-ALLERGYOur#: 174526
Made in USA
20x25x2 AIRx ALLERGY Air Filter - MERV 11
20x25x2 AIRx ALLERGY Air Filter - MERV 11
20x25x2 AIRx ALLERGY Air Filter - MERV 11
20x25x2 AIRx ALLERGY Air Filter - MERV 11
20x25x2 AIRx ALLERGY Air Filter - MERV 11
20x25x2 AIRx ALLERGY Air Filter - MERV 11
20x25x2 AIRx ALLERGY Air Filter - MERV 11
20x25x2 AIRx ALLERGY Air Filter - MERV 11
20x25x2 AIRx ALLERGY Air Filter - MERV 11
20x25x2 AIRx ALLERGY Air Filter - MERV 11
20x25x2 AIRx ALLERGY Air Filter - MERV 11
20x25x2 AIRx ALLERGY Air Filter - MERV 11
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

$99.95

$124.94
Code DF20 · Save 20%
$16.66 per filter
Code DF20 · Save 20%
SAVE 0% 6-pack

Pack Size

Filtration Level

Compare all →
In Stock, Ships onMonday, Oct. 5th
$70.00 more gets you free shipping! This puts you within of 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
20 × 25 × 2"
Actual Size
19 ½ × 24 ½ × 1 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) 854 1281 1708 2135 1708 * * Max Rated Airflow
11 29 68 87 Initial Resistance (IWC) 0.09 0.15 0.25 0.37 0.25 *
MERV
11
(µm) PSE (%)
0.3-1.0 29
1.0-3.0 68
3.0-10 87
Airflow Rate (CFM) Initial Resistance (IWC)
854 0.09
1281 0.15
1708 0.25
2135 0.37
1708 * 0.25 *
* Max Rated Airflow

Replaces These Filters

National Filter Sales

PF-02-202502-6

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
58 verified reviews
5★
(51)
4★
(4)
3★
(2)
2★
(0)
1★
(1)
5
4.8 / 5 (58)
Steven M. 98 days ago
5
seems a good value for filter type great customer service
Steven M. 190 days ago
5
2" filter beats 1" store shelf
James C. 224 days ago
5
MERV 11 allergy air filters provide the extra edge for the safe removal of dust and allergens. Also, easy to install.
Steven M. 476 days ago
5
prompt accurate reliable
Darlene D. 683 days ago
5
They work great!
Patricia M. 858 days ago
5
We notice dust in the house andd w change the filter.
Steven M. 972 days ago
5
Excellent filter, fits well, 2-in. size lasts substantially longer than 1-in. product
Carla H. 1005 days ago
5
Best value
Sandra A. 1012 days ago
5
Very good quality & easy to order
Bob B. 1071 days ago
5
We buy a box full of filters so we have them on hand and not have to run to the big box store every couple months. We started using Discount Filters years ago when it was difficult to find our size filters. The filters are great quality, shipping is quick and a fair price. Overall we have loved Discount Filters
Steven M. 1130 days ago
5
assembled well
James B. 1167 days ago
5
Does a good job filtering as well as increased air circulation.
Steven M. 1206 days ago
5
Best value best match
Joseph W. 1732 days ago
5
Great filter
Larry T. 1777 days ago
5
Shipment was very fast!
Sara S. 1782 days ago
5
Great company
Art C. 1812 days ago
5
A great filter and a value
Susan B. 1873 days ago
5
Always easy to order from Discount Filter. The size is hard to find locally so I continue to purchase on line. Quick service & delivered as expected.
Brian O. 1913 days ago
5
Excellent filter, like the 2 inch think size, helps with airflow through the system and with filtering the air. Lasts longer than 1 inch thick filters.
Mistie B. 1958 days ago
5
Great filters, great price snd QUICK shipping! Prices cannot be beat!
Carol K. 2007 days ago
4
Like that it is 2 inch thick and should help cut down dust and pollen.
SHAWN M. 2031 days ago
5
Nice job !
DC W. 2033 days ago
5
Excellent quality and the best price.
william d. 2410 days ago
5
arrived in good condition and is good quality
Bob B. 2472 days ago
5
My furnace loves a new filter every two months and with the 20x25x2 Air x Allergy Air Filter Merv 11 keeps the dust and dander down in the house. The ordering process is easy, the shipments arrives in a few days and I have never had any issues with damage. Great product at a good price!
Alice C. 2668 days ago
5
They are ok
Terry B. 2692 days ago
5
Fit and Function, no problems, sure beats the Big Box stores on price and having them in stock . I will buy again.
Kylie G. 2722 days ago
5
Excellent company to work with
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