Filterbuy 16x21x1 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 4-Pack
Filterbuy 16x21x1 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 4-Pack
Hero image 0 of Filterbuy 16x21x1 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 4-Pack, 0 of 8
Visit the Filterbuy Store

Filterbuy 16x21x1 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 4-Pack

|27.7K ratings

Key item features

  • UNIVERSAL COMPATIBILITY: 16x21x1 replacement air filters for your furnace, air conditioner, or heat pump enhance HVAC system efficiency and support a healthy lifestyle (actual size: 15.50" x 20.50" x 0.75")
  • MERV 8 PERFORMANCE: Protect your home or business from pollen, lint, mold, and more with MERV 8 synthetic media (comparable with MPR 700 & FPR 5) that captures 90% of dust without restricting air flow
  • LONG-LASTING FILTRATION: Electrostatically charged media with 14 pleats per foot traps more microscopic particles and lasts 3x longer than fiberglass models (replace every 90 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

About this item

Product details

Specifications

Warranty

Customer ratings & reviews

4.7 out of 5 stars
stars
27.7K ratings8,010 reviews
How item rating is calculated
  1. 5 stars86% (23.7K)
  2. 4 stars7% (1,923)
  3. 3 stars2% (631)
  4. 2 stars1% (382)
  5. 1 star4% (1,041)
Filtered and sorted results would be available on the new 'Customer ratings & reviews' page.
Sort by |

Showing 1-3 of 8,010 reviews

Aug 16, 2026
Reviewer name: Customer
Sold byFilterbuy
5 out of 5 stars
5 out of 5 stars review

We decided to filter at

We decided to filter at the cold air returns rather that at the air handler. The goal was to reduce the amount of dust in the house. The 12x12x1 filters fit the returns perfectly. We've noticed no difference in air flow. It's too early to determine if there is less dust. The filters are of high quality. If the change we made in filter location works the way we want, we'll definitely be purchasing more from Filter Buy.

Review from Filterbuy
Helpful?4T1TWWKHEVIA970187384
Jul 19, 2026
Reviewer name: Customer
Sold byFilterbuy
5 out of 5 stars
5 out of 5 stars review

Best filters for your furnace

I've been using these filters since they were recommended by Any Hour Supply. I've been using them for 5 years now, these filters have done a better job than anything else on the market! Never any problems, very inexpensive in cost, but the quality is unmatched. We'll use these and only this brand for my air conditioner/Furnace ever more!

Review from Filterbuy
Helpful?4T1TWWKHEVIA970187384
Jul 22, 2026
Reviewer name: Customer
Sold byFilterbuy
5 out of 5 stars
5 out of 5 stars review

I really love getting my filters

The convenience of getting my filters by subscription is great! I never have check the size and then remember to get them at the store then get them home without crushing them in the car. I was buying them several at a time but that took up a lot of space. I am very happy with the price, quality and convenience.

Review from Filterbuy
Helpful?4T1TWWKHEVIA970187384
Current price is $39.96
Price when purchased online
  • Free shipping
  • Free 30-day returns
Subscribe, Your usuals, on your schedule, Save time and stay stocked!, $39.96
Your usuals, on your schedule
Save time and stay stocked!
One-time purchase $39.96

How do you want your item?

How do you want your item?
Ships to
Arrives by Wed, Sep 2
|
Sold and shipped by FilterbuyPro Seller
4.592806394316163 out of 5 stars
4.592806394316163 stars out of 5, based on 4504 seller reviews(4.6)
Free 30-day returns