Search  for anything...
Filterbuy

Filterbuy 20x23x4 Air Filter MERV 13 Optimal Smoke & Allergy Defense (4-Pack), Electrostatic Pleated HVAC AC Furnace Filters Replacement, Made in USA (Actual Size: 19.50 x 22.50 x 3.63)

  • Based on 21,847 reviews
Condition: New
Checking for the best price...
$166.96 Why this price?

Buy Now, Pay Later

As low as $27.83 / mo
  • – 6-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

This item is eligible for return within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: In Stock.
Fulfilled by Filterbuy
Arrives Monday, Aug 10
Order within 23 hours and 41 minutes
Available payment plans shown during checkout
Protection Plan Protect Your Purchase
Checking for protection plans...

Recently Viewed

Style: 20x23x4


Features

  • UNIVERSAL COMPATIBILITY: 20x23x4 replacement air filters for your furnace, air conditioner, or heat pump enhance HVAC system efficiency and support a healthy lifestyle (actual size: 19.50" x 22.50" x 3.63")
  • MERV 13 PERFORMANCE: Protect your home or business from germs, bacteria, and more with MERV 13 synthetic media (comparable with MPR 1900 & FPR 10) that captures 98% of dust without restricting air flow
  • LONG-LASTING FILTRATION: Electrostatically charged media with 11 pleats per foot traps more microscopic particles and lasts 3x longer than fiberglass models (replace every 180 days for optimal performance)
  • SUPERIOR CONSTRUCTION: Easy installation beverage board frames with dual wire backing outperform flimsy cardboard designs by improving durability, preventing warping, and resisting extreme temperatures
  • MADE IN THE USA: Built with industrial-grade, recyclable materials and proudly manufactured 100% in the United States for dependable indoor air quality that is trusted by millions of homes

Features

  • 20x23x4 replacement air filters for your furnace, air conditioner, heat pump, or HVAC system (actual size: 19.50" x 22.50" x 3.63")
  • MERV 13 synthetic media (comparable with MPR 1500 - 1900 & FPR 10) protects homes from bacteria and more by trapping 98% of airborne particles without impacting air flow
  • High-quality construction features an electrostatically charged, pleated design that captures more harmful particles and prolongs the products lifespan by 3 times that of fiberglass models
  • Industrial-grade beverage board frames with dual wire backings outperform standard cardboard designs
  • All components are manufactured within the United States and designed with recyclable materials

Manufacturer: ‎Filterbuy


Part Number: ‎AFB20x23x4M13pk4


Item Weight: ‎12 pounds


Product Dimensions: ‎19.5 x 22.5 x 3.63 inches


Country of Origin: ‎USA


Item model number: ‎AFB20x23x4M13pk4


Is Discontinued By Manufacturer: ‎No


Size: ‎4 Count (Pack of 1)


Color: ‎Platinum


Style: ‎20x23x4


Finish: ‎Electrostatic


Material: ‎Synthetic


Pattern: ‎Pleated


Minimum Efficiency Reporting Values (MERV): ‎13.00


Mounting Type: ‎Embedded


Special Features: ‎Easy to Install, Dust Collection, Removable


Usage: ‎Commercial/Residential


Included Components: ‎Air Filters


Batteries Included?: ‎No


Batteries Required?: ‎No


Warranty Description: ‎Defective items and products that were shipped incorrectly are subject to a refund or replacement on a case by case basis. Please contact our customer support team for more information if you experience any issues.


Date First Available: April 27, 2013


Brand: Filterbuy


Material: Aluminum, Plastic, Polypropylene


Product Dimensions: 22.5"L x 19.5"W x 3.63"Th


MERV Rating: 13


Compatible Devices: Air Cleaner, Air Conditioner, Furnace, HVAC System, Heat Pump


Item Weight: 12 Pounds


Filter Mounting Type: Slide In


Filter Shape: Rectangular


Max Temperature: 200 Degrees Fahrenheit


UPC:


MERV Rating: 13


Compatible Devices: Air Cleaner, Air Conditioner, Furnace, HVAC System, Heat Pump


Filter Mounting Type: Slide In


Filter Shape: Rectangular


Max Temperature: 200 Degrees Fahrenheit


Product Grade: Replacement Parts


Filter Airflow Direction: Variable


Compatible Hvac Systems: Commercial, Industrial, Residential


Common Applications: Allergen Reduction, Antimicrobial, High Strength


Max Velocity: 615 Cubic Feet Per Minute


Item Dimensions L x W x Thickness: 22.5"L x 19.5"W x 3.63"Th


Item Weight: 12 Pounds


Unit Count: 4.0 Count


Brand Name: Filterbuy


Model Number: AFB20x23x4M13pk4


UPC: 717267071529


Number of Items: 1


Manufacturer: Filterbuy


Manufacturer Part Number: AFB20x23x4M13pk4


Item Type Name: Air Filter


Included Components: Air Filters


Warranty Description: Defective items and products that were shipped incorrectly are subject to a refund or replacement on a case by case basis. Please contact our customer support team for more information if you experience any issues.


Material Type: Aluminum, Plastic, Polypropylene


Air Filter Construction: Pleated


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Aug 10

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Fit well and work well.
Style: 18x20x1
This filter seems to be efficient at removing dust and allergens. Its really SO much beyyer thanstandard filters.Worth the extra cost!
Reviewed in the United States on May 28, 2026 by Jack Purdy
    • American-made, high-quality filters at a fair price
Style: 12x12x1
I've been buying from Filterbuy for years now. If you want your indoor air to be as clean and healthy as outdoor air, you need to replace those HVAC filters every couple of months -- so you might as well get good ones. I have 3 pets, I live in a very urban area, and I cook at home a lot. These filters pick up everything. And I like that they're not stored in an Amazon warehouse -- they ship straight from the Filterbuy factory. ... show more
Reviewed in the United States on March 21, 2026 by Vincent J. Mareino
    • Merv 13 Merv 13
Style: 16.38x21.5x1
Review Image by Sarasota
Review Image by Sarasota
These filters are the best made filters I have found to date. Sharp folds, tight construction. They filter so well that I had to tape them, otherwise they are vacuumed by my Carrier system. Unfortunately, filter housings are very poorly designed in most AC systems. By blue taping the filters you prevent any filtering loss that will happen with most systems. Air quality has improved by a huge massive lot vs Merv 8 that I was using. These Merv 13 even help with fumes and cooking smells. I have some serious allergies and these filters are definitely a game changer for those who spend more time at home. I feel soo much better. Extremely happy with the change and the filtration capabilities. I have noticed no change in my carrier system performance whatsoever. I'm sure it is harder for the blower motor to use merv 13 filters, but my AC handles it perfectly. Merv 13 could be too much for some older AC systems, so always consider check your model and capabilities of it. My AC is purposely undersized. I run my AC for about 10 to 15 hours a day during the long Central FL summers. You can see how the new vs old looks in the picture after a hard month of use. If you can, get these, you will love them. ... show more
Reviewed in the United States on July 12, 2025 Reviewed in the United States on July 12, 2025 by Sarasota
    • Great filters!
Style: 16x24x2
Excellent product - fits perfectly. The furnace kept kicking off and found that I was way overdue for a new filter. Got the 3 pack so don’t have to worry about them for a while.
Reviewed in the United States on April 6, 2026 by Kindle Customer from 207
    • Good fit and price
Style: 14x24x1
Good fit and Filtering
Reviewed in the United States on June 15, 2026 by Rich B
    • Work fine
Style: 20x20x1
Used these to make a box fan filter. Seems to work fine.
Reviewed in the United States on June 6, 2026 by danw
    • Quick Customer Service
Style: 20x20x4
I ordered four filters but only received three. I contacted Filterbuy through Amazon and the replacement filter was shipped the next day. And the filters are high quality.
Reviewed in the United States on May 1, 2026 by Roger D.
    • Filters
Style: 16x20x1
Great!
Reviewed in the United States on June 18, 2026 by E K Ka'ae

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...