• 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.

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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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14x18x1 AIRx ALLERGY Air Filter - MERV 11, 6-Pack

5
20 reviews
◆
 
Average rating 4.6/5
5 stars
(14)
4 stars
(5)
3 stars
(0)
2 stars
(0)
1 star
(1)
AIRx 14x18x1-ALLERGYOur#: 109885
Made in USA
14x18x1 AIRx ALLERGY Air Filter - MERV 11, 6-Pack
14x18x1 AIRx ALLERGY Air Filter - MERV 11, 6-Pack
14x18x1 AIRx ALLERGY Air Filter - MERV 11, 6-Pack
14x18x1 AIRx ALLERGY Air Filter - MERV 11, 6-Pack
14x18x1 AIRx ALLERGY Air Filter - MERV 11, 6-Pack
14x18x1 AIRx ALLERGY Air Filter - MERV 11, 6-Pack
14x18x1 AIRx ALLERGY Air Filter - MERV 11, 6-Pack
14x18x1 AIRx ALLERGY Air Filter - MERV 11, 6-Pack
14x18x1 AIRx ALLERGY Air Filter - MERV 11, 6-Pack
14x18x1 AIRx ALLERGY Air Filter - MERV 11, 6-Pack
14x18x1 AIRx ALLERGY Air Filter - MERV 11, 6-Pack
14x18x1 AIRx ALLERGY Air Filter - MERV 11, 6-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 the USA
Made with pride in the USA Your purchase supports American jobs
MERV 11 - Superior
MERV 11 - Superior Allergy sufferers
Actual Dimensions
Actual Dimensions 13-1/2 × 17-1/2 × 3/4"
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

All product names, logos, brands, trademarks and registered trademarks are property of their respective owners. All company, product and service names used on this page are for identification purposes only. DiscountFilters.com and National Trade Supply, LLC are not affiliated with these brands.

$94.95

$118.69
Code DF20Save 20%
$15.83 per filter
Code DF20Save 20%
SAVE 0% 6-pack

1. Filtration level

Compare all →

2. Pack size

6 pack of 14 x 18 x 1 MERV 11 Allergy

In Stock, Ships onMonday, Nov. 9th
$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.

Your Order Ships Free!

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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 × 18 × 1"
Actual Size
13 ½ × 17 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

Particle size efficiency · MERV 11

Share of particles captured, by particle size

0.3–1.0 µm 1.0–3.0 µm 3.0–10 µm
29% 68% 86%

Airflow and resistance

Initial resistance at each airflow rate; lower resistance means less strain on your system

Airflow rate (CFM) 258 387 516 645 516
Initial resistance (in. w.c.) 0.09 0.13 0.19 0.25 0.19

Max rated airflow

Customer Reviews

4.6 4.6 out of 5 stars
20 verified reviews
5★
(14)
4★
(5)
3★
(0)
2★
(0)
1★
(1)
5
4.6 / 5 (20)
larry m. 732 days ago
4
Quite good
EARRIEN 1059 days ago
5
Excellent purchase!
Thomas M. 1819 days ago
5
This was my first time ordering and I couldn't be happier. The product was exactly what I was looking for especially because the size I need is hard to find and great prices. I was hesitant to order at first because some reviews said shipping was slow, but my order arrived very quickly. Will definitely buy again when its time to reorder.
Jay B. 1851 days ago
5
Good prices and discounts. Even got money back through Rakuten.
david p. 1996 days ago
5
Well I must say is that, during a lost package and customer service. they took care of the problem right away. That is the way it should be handled, the person I spoke to was very nice and understanding. I will be continuing my service and will recommend their service to all of my friends. Thank you!
Patty E. 2019 days ago
5
This was delivered so quickly and I can tell the difference in my apartment as with air being cleaner.
Michele Z. 2250 days ago
5
I couldn’t find my a/c filter size anywhere. I’m so glad I found Discounts Filters. They quickly made great filters for me at a good price. Wonderful quality.
ARTHUR E. 2467 days ago
5
Good product and worth the price. Shipped in original condition and quick.
Zacharias C. 2510 days ago
4
So far product is great. Shipping and Processing is painfully slow! From the the time the order was placed it took two weeks for the product to ge to my door. That's a little much, in my opinion.
Susan 2764 days ago
5
Have used these filters for years. They are helping to extend the life of my HVAC system.
Robert D. 2827 days ago
5
In recent years I've experienced difficulty in finding this particular size air filter at plumbing suppliers and retail stores. Thanks to your company, I now have piece of mind; knowing that I can order this item from you and it will be the exact size with quality construction. R. Davis
larry m. 3250 days ago
5
Very good / well made filters and not available at any major local sources. Discount delivered in quick time, much appreciation....much better than running around trying to find them through AC techs, etc.! Thanks.
chris m. 3339 days ago
5
great product and great value
Mike 3467 days ago
5
This is a quality air filter at a reasonable price.
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