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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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20x20x1 AIRx HEALTH Air Filter, 4-Pack

5
206 reviews
◆
 
Average rating 4.7/5
5 stars
(171)
4 stars
(23)
3 stars
(8)
2 stars
(2)
1 star
(2)
AIRx 20x20x1-HEALTHOur#: 194861
Made in USA
20x20x1 AIRx HEALTH Air Filter, 4-Pack
20x20x1 AIRx HEALTH Air Filter, 4-Pack
20x20x1 AIRx HEALTH Air Filter, 4-Pack
20x20x1 AIRx HEALTH Air Filter, 4-Pack
20x20x1 AIRx HEALTH Air Filter, 4-Pack
20x20x1 AIRx HEALTH Air Filter, 4-Pack
20x20x1 AIRx HEALTH Air Filter, 4-Pack
20x20x1 AIRx HEALTH Air Filter, 4-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 13 - Optimal
MERV 13 - Optimal Premium protection
Actual Dimensions
Actual Dimensions 19-1/2 × 19-1/2 × 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 the ultimate solution to air quality concerns in your home, this is the air filter for you! The charged synthetic media in the filter attracts and captures very small particles that can irritate your lungs. We offer a convenient shopping experience with air conditioner filters and furnace filters in your size. We'll deliver your filters right to your front door!

  • Pleated media provides an extended surface area for highly-efficient filtration
  • MERV 13 rating means the filter removes 90% of particles from 1-3 microns in size (including bacteria and particles that carry viruses)
  • Meets "LEED" green building standards for new and existing buildings
  • 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.

$64.78

$80.98
Code DF20Save 20%
$16.20 per filter
Code DF20Save 20%
SAVE 35% 4-pack

1. Filtration level

Compare all →

2. Pack size

4 pack of 20 x 20 x 1 MERV 13 Health

In Stock, Ships onMonday, Nov. 9th
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Orders over $70 ship 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
20 × 20 × 1"
Actual Size
19 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
0.25" WC
Rated Velocity
300 FPM

Performance Testing

Particle size efficiency · MERV 13

Share of particles captured, by particle size

0.3–1.0 µm 1.0–3.0 µm 3.0–10 µm
51% 88% 98%

Airflow and resistance

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

Airflow rate (CFM) 410 615 819 1024 819
Initial resistance (in. w.c.) 0.13 0.21 0.29 0.39 0.29

Max rated airflow

Customer Reviews

4.7 4.7 out of 5 stars
206 verified reviews
5★
(171)
4★
(23)
3★
(8)
2★
(2)
1★
(2)
5
4.7 / 5 (206)
Peter L. 45 days ago
5
The product works very well and keeps the air exceptionally clean.
Dylan S. 65 days ago
5
Ordered wrong size now stuck with a box of filters. I cut them up and am able to still use them. They are high quality.
SANDRA C. 121 days ago
5
Always a great price and product. Fast shipping and free shipping.
ANGEL T. 140 days ago
5
We have been Discount Filters for many years and are highly satisfied with the quality of your A/C filters. Thank you.
Joe T. 215 days ago
5
It filters.
carl A. 241 days ago
5
I have been buying air filters from you for about 10 years. I have no complaints. I change 3 filters every 90 days. They all are visibly soiled at that time. I stopped using your refrigerator water filters in my Samsung refrigerator because they leaked water. I have to purchase Samsung filters that do not leak.
jim 271 days ago
5
The furnace air filters purify the air as advertised. Easy to replace after 3 months use.
Arnol L. 281 days ago
5
Quality filter
Russ S. 285 days ago
5
Very happy with the filters. Same quality as the top brand and work absolutely great with the price being about half!! That is a big deal!
Kay C. 305 days ago
5
Given to the age of this house and the inaccessibility of the air ducts (too small of a crawl space) this filter reduces the particulates and the dust to my satisfaction. Even so, it has indeed reduced the amount of particulates and dust filtering through the vents! The only complaint I would have is that sometimes the housing of the filter is crushed and/or bent--but with some effort is fixable for use.
Dolores 315 days ago
5
Always has stock on hand, with fast shipping after ordering. Wonderful service.
customer 325 days ago
4
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Maria N. 348 days ago
5
The air filter is doing its job! It’s Filtering the air! I am very happy with this filter!!
Martha B. 369 days ago
5
Very satisfied
Donald 372 days ago
5
Living in AZ with a great amount of dust these filters work great and are sold a fair price.
DENNIS S. 392 days ago
5
Good price and fast shipping. Since using these filters our home is almost dust free plus the congestion problems I used to have are in the past. Breathe a lot better since using these.
Bruce 445 days ago
5
Very good. I’ve used it before.
Mark H. 463 days ago
5
too easy to order and keep HVAC running its best
Kay C. 477 days ago
5
This is an old house that is prone to being dust-laden--no matter what I do--too many leaky windows and doors. At the onset of installing the Health Filters I noticed a dramatic reduction of the amount of dust blowing from the AC vents! And that is very important for my COPD issues!
Julie O. 499 days ago
5
A+ Excellent service and excellent product!
Suzanne G. 503 days ago
5
Quality filters and good service.
Mary S. 544 days ago
5
The filters are great.
Jack N. 644 days ago
5
look great good price and will order again
John T. 649 days ago
5
It is well worth the extra money. We have a pet and this filter does a greay job! Thank you.
Donald 656 days ago
5
Very good filters at a fair price.
Chris P. 731 days ago
5
Very good filter. I've noticed a lot less dust in my home since switching to these filters.
PamelaC 778 days ago
5
This is the best air filter that I have ever used; I immediately sense what outdoor fresh air feels like.
REBECCA D. 832 days ago
5
Love these convenient filters!
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