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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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20x20x2 AIRx ALLERGY Air Filter - MERV 11

5
30 reviews
◆
 
Average rating 4.9/5
5 stars
(28)
4 stars
(1)
3 stars
(1)
2 stars
(0)
1 star
(0)
AIRx 20x20x2-ALLERGYOur#: 181982
Made in USA
20x20x2 AIRx ALLERGY Air Filter - MERV 11
20x20x2 AIRx ALLERGY Air Filter - MERV 11
20x20x2 AIRx ALLERGY Air Filter - MERV 11
20x20x2 AIRx ALLERGY Air Filter - MERV 11
20x20x2 AIRx ALLERGY Air Filter - MERV 11
20x20x2 AIRx ALLERGY Air Filter - MERV 11
20x20x2 AIRx ALLERGY Air Filter - MERV 11
20x20x2 AIRx ALLERGY Air Filter - MERV 11
20x20x2 AIRx ALLERGY Air Filter - MERV 11
20x20x2 AIRx ALLERGY Air Filter - MERV 11
20x20x2 AIRx ALLERGY Air Filter - MERV 11
20x20x2 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

$173.99

$217.49
Code DF20 · Save 20%
$14.50 per filter
Code DF20 · Save 20%
SAVE 8% 12-pack

Pack Size

Filtration Level

Compare all →
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.

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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
20 × 20 × 2"
Actual Size
19 ½ × 19 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) 683 1025 1367 1708 1367 * * 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)
683 0.09
1025 0.15
1367 0.25
1708 0.37
1367 * 0.25 *
* Max Rated Airflow

Replaces These Filters

National Filter Sales

PF-02-202002-6

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

4.9 4.9 out of 5 stars
30 verified reviews
5★
(28)
4★
(1)
3★
(1)
2★
(0)
1★
(0)
5
4.9 / 5 (30)
Samuel R. 640 days ago
5
I've been using them for yrs, great product
Timothy 721 days ago
5
Great product
Tom C. 1206 days ago
5
Great quick delivery
DAVID T. 1377 days ago
5
Used these filters for years. They perform as advertised. Well constructed with quick delivery. I find it convenient to keep a case on hand. You are much more likely to change out the filter on a regular basis if you keep a supply on hand.
Gary 1746 days ago
5
Very good service. They deliver fast, for the right price, and they answer the phone if you need!!
Sara S. 1780 days ago
5
Product is great, service is great and they always have what I need
Carole B. 1805 days ago
5
Filter is well made sturdy and fits perfectly in the HVAC unit.
Marshall M. 1894 days ago
5
Change filters every three months. Seem to work just fine. Arrive on a timely basis.
Gene B. 1936 days ago
5
Great product. Hard to find in stores so this site is a lifesaver.
Mistie B. 1956 days ago
5
Great filters, great price and shipping was FAST! Prices cannot be beat!
Edward J. 1959 days ago
5
well made, correct size, fast shipping
Danny 2019 days ago
5
product showed up on time
ron s. 2031 days ago
5
product,service,value. couldnt ask for more. these guys are great.
Peter/Kathie Z. 2198 days ago
5
ordered these filters from them many times. Shipped and received quickly Good filters for the price.When I get low in stock, guess where I'm going to reorder from.
Cynthia S. 2499 days ago
5
I really like these filters and very much appreciate that you offer 2" filters. However, I don't really like that the filters do not come individually wrapped. The box they come in doesn't fit in my a/c closet, and because they're unwrapped I can't store them in there individually. The boxes stay in my dining room. :(
Steve W. 2539 days ago
5
Our home is clean of dust and pollen living in Illinois. Discount filter options are awesome and the pricing is wonderful.
Thomas C. 2627 days ago
5
quick delivery, fair price, works real good
John 2776 days ago
5
Great Pricing. Super Fast Delivery. Well constructed product. Great communication from support staff.
Steven C. 2946 days ago
5
These work great. Perfect fit and performs as expected
Peter/Kathie Z. 3744 days ago
5
Good filters, good price, easy ordering , great deal (free-shipping/handling). I'll be back
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