• 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.

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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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12x24x1 AIRx ALLERGY Air Filter

AIRx 12x24x1-ALLERGYOur#: 194200
Made in USA
12x24x1 AIRx ALLERGY Air Filter
12x24x1 AIRx ALLERGY Air Filter
12x24x1 AIRx ALLERGY Air Filter
12x24x1 AIRx ALLERGY Air Filter
12x24x1 AIRx ALLERGY Air Filter
12x24x1 AIRx ALLERGY Air Filter
12x24x1 AIRx ALLERGY Air Filter
12x24x1 AIRx ALLERGY Air Filter
12x24x1 AIRx ALLERGY Air Filter
12x24x1 AIRx ALLERGY Air Filter
12x24x1 AIRx ALLERGY Air Filter
12x24x1 AIRx ALLERGY Air Filter
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

$24.95

$31.19
Code DF20 · Save 20%
$24.95 per filter
Code DF20 · Save 20%
SAVE 0% 1-pack

Pack Size

Filtration Level

Compare all →
In Stock, Ships onTuesday, Sep. 29th
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
12 × 24 × 1"
Actual Size
11 ½ × 23 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) 295 443 590 738 590 * * 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)
295 0.09
443 0.13
590 0.19
738 0.25
590 * 0.19 *
* Max Rated Airflow

Replaces These Filter

National Filter Sales

PF-02-122401-6

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
154 verified reviews
5★
(127)
4★
(13)
3★
(4)
2★
(2)
1★
(8)
5
4.6 / 5 (154)
Rob T. 34 days ago
4
I ordered 14 by 24 inch We received 12 by 24 Please help Robert Tucker 3563 Horse Cove Rd. Highlands, NC 28741 Thank you
George 95 days ago
5
These fit into the return plenums, and appear to fiter the air well.
KAREN M. 201 days ago
5
i have been using these filters for a number of years. enough said.
Rick B. 263 days ago
5
All good here
Susan U. 283 days ago
5
I always purchase from Discount Filters. I have purchased these filters before. They do a good job of filtering out dirt, pollens including pet dander.
Carole S. 315 days ago
5
These are the BEST Filters I always buy my filters from them. They last as expected and they fit my needs. I highly recommend these and I don't do this often m
Ron W. 324 days ago
5
good product
Darlene l. 375 days ago
5
Love them have been with your company for several years
Mark E. 466 days ago
5
They fit great and work great. I’ve been using them for years.
Maggie F. 477 days ago
5
Great quality, fast shipping, secure packaging (no damage to contents), and bonus: reminders to change my filters! Been using these for 5+ years and have no reason to shop elsewhere.
Linda F. 491 days ago
5
I like both
Philip M. 645 days ago
5
Products are great
Darlene l. 646 days ago
5
Happy with them been using them for a couple years now I have no complaints
Susan G. 654 days ago
5
So thrilled I purchased these air filters from a USA based company for less than the big box stores offer, the type of filter I like is never available so this purchase was great. They also have them in stock which is why I chose to purchase through this company. I will continue.
Donn R. 687 days ago
5
Quick and reliable. Customer service is responsive if you have any questions or shipping damage.
Patricia 688 days ago
5
I've had excellent results with the filters from Discount Filters. That's why when I need to purchase new filters, I go right to Discount Filters. Shipping is free and delivery is fast.
Wendy B. 795 days ago
5
Ease of installation
Susan U. 795 days ago
5
I have purchased this Air Filter before. This AIRx Allergy filter, MERV 13, and other filters I have ordered seem to do what they are reported to do. I began ordering filters, 6 at a time, from Discount Filters several years ago when I could not find one of the sizes of filters locally.
Mary L. 800 days ago
5
works great
Ron W. 808 days ago
5
decent product price is getting ridiculous
ron w. 809 days ago
5
works fine...costs have doubled...will be forced to search for alternatives
Farin S. 831 days ago
5
We LOVE this product! When we moved in, there was a very old filter in the vent. The house was stinky! We put this into the vent and within a few hours, the house was fresh! TY!
Richard D. 891 days ago
5
I like the MERV 11 filters. They allow more air to flow through and that does not put a strain on my HVAC system's blower. I have started to change my filters out every month to keep the dust down in the house.
Darlene l. 917 days ago
5
Great value
Dennis H. 981 days ago
5
Good product, good price and delivered right to my door.
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