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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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12x20x1 AIRx ALLERGY Air Filter - MERV 11

5
49 reviews
◆
 
Average rating 4.6/5
5 stars
(39)
4 stars
(4)
3 stars
(3)
2 stars
(0)
1 star
(3)
AIRx 12x20x1-ALLERGYOur#: 109877
Made in USA
12x20x1 AIRx ALLERGY Air Filter - MERV 11
12x20x1 AIRx ALLERGY Air Filter - MERV 11
12x20x1 AIRx ALLERGY Air Filter - MERV 11
12x20x1 AIRx ALLERGY Air Filter - MERV 11
12x20x1 AIRx ALLERGY Air Filter - MERV 11
12x20x1 AIRx ALLERGY Air Filter - MERV 11
12x20x1 AIRx ALLERGY Air Filter - MERV 11
12x20x1 AIRx ALLERGY Air Filter - MERV 11
12x20x1 AIRx ALLERGY Air Filter - MERV 11
12x20x1 AIRx ALLERGY Air Filter - MERV 11
12x20x1 AIRx ALLERGY Air Filter - MERV 11
12x20x1 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

$69.95

$87.44
Code DF20 · Save 20%
$11.66 per filter
Code DF20 · Save 20%
SAVE 0% 6-pack

Pack Size

Filtration Level

Compare all →
In Stock, Ships onMonday, Oct. 5th
You're $70.00 away from free shipping! Buy this and you're only from 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
12 × 20 × 1"
Actual Size
11 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) 246 369 492 615 492 * * 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)
246 0.09
369 0.13
492 0.19
615 0.25
492 * 0.19 *
* Max Rated Airflow

Replaces These Filters

National Filter Sales

PF-02-122001-6

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

4.6 4.6 out of 5 stars
49 verified reviews
5★
(39)
4★
(4)
3★
(3)
2★
(0)
1★
(3)
5
4.6 / 5 (49)
David N. 309 days ago
5
Awesome service and thank you
CINDY R. 389 days ago
5
Great filters!
patricia s. 486 days ago
5
It works very well thank you pat
Constance H. 620 days ago
5
Works great. Hard to find in stores and delivered right to the home.
Daniel G. 652 days ago
4
Great product and price.
Jacquelyn G. 837 days ago
5
Easy to order Quick to arrive
robert m. 838 days ago
5
these filters are great but they say to last 3 months but they only really last 2.....
Deborah T. 904 days ago
4
On site, the filter appeared well-made and price worthy. I inserted the filter about 2 weeks ago, and I haven't done a visual check as of yet, however I have noticed an obvious improvement in the air in my home AND the amount of dust. I have know doubt this filter is a real deal! BTW, I did a price check with local hardware centers for the same type of filter and the value for the money is an added plus.
Tom C. 1211 days ago
5
Good price for a good product.
Kent 1411 days ago
5
Good filters for great price when you buy 6
Lonnie B. 1665 days ago
5
Looks like I get from the store.
Charlene J. 1722 days ago
5
Always convenient to order. Always the right size and delivered right to my front door. Takes all the guesswork out of filters for my HVAC ststem
Bobby C. 1725 days ago
5
Great product and great price. Fast shipping also. Always been good.
P S. 1870 days ago
4
Seems to be a good product, reasonably priced.
Vicki P. 2006 days ago
5
Easy to order. They ship right away. The size I need is difficult to find in stores. Ordering makes it so much easier!
Brian W. 2019 days ago
5
Good product for a very good price.
Tom H. 2232 days ago
4
a bit expensive, but fit well, shipped quickly and arrived on time.
Patrick M. 2260 days ago
5
Great price, quick delivery and excellent filters
Andrew J. 2296 days ago
5
Good standard quality air filters.
Frank W. 2422 days ago
5
product i like and reorder for the year. What I DISLIKE is the constant emails telling me its time to reorder
Steven B. 2453 days ago
5
The filters were delivered when promised and fit perfectly into my HVAC system.
robert m. 2605 days ago
5
It's great getting my filters shipped right to my house, so I have filters on hand. Price is near to the big chain stores. but the free shipping to my home is the best. Besides they work real good.
Charles O. 2748 days ago
5
Quick delivery,
Michael M. 2910 days ago
5
USING IT FOR ABOUT 2 YEARS. CHANGING EVERY SIX MONTHS. REMOVES DUST PARTICLES
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