Filterbuy 20x20x1 Air Filter MERV 11 Allergy Defense, Pleated HVAC AC Furnace Filter Replacement, 5-Pack
Filterbuy 20x20x1 Air Filter MERV 11 Allergy Defense, Pleated HVAC AC Furnace Filter Replacement, 5-Pack
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Filterbuy 20x20x1 Air Filter MERV 11 Allergy Defense, Pleated HVAC AC Furnace Filter Replacement, 5-Pack

13.1K ratings
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Count Per Pack5

Key item features

  • UNIVERSAL COMPATIBILITY: 20x20x1 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 19.50" x 0.75")
  • MERV 11 PERFORMANCE: Protect your home or business from allergens, pets, and more with MERV 11 synthetic media (comparable with MPR 1200 & FPR 7) that captures 95% 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

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Warranty

Customer ratings & reviews

4.7 out of 5 stars
stars
13.1K ratings5,117 reviews
How item rating is calculated
  1. 5 stars85% (11.2K)
  2. 4 stars8% (1,055)
  3. 3 stars3% (332)
  4. 2 stars1% (161)
  5. 1 star3% (441)

Reviews summary

Pros

  • : The filters are high quality while remaining affordably priced.
  • : The size matches the appliance and provides rigidity.
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Showing 1-3 of 5,117 reviews

Oct 13, 2026
Reviewer name: Keren
Top Reviewer
Item details
Count per pack: 1
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Where Have These Been All My Life?!

I didn't even know these existed! I've been buying the standard AC filters all this time, and now I'm wondering what took me so long to discover MERV 11 filters. I'm so glad I came across these! The quality and durability seem great, and they're easy to install. They fit perfectly, and I love that they're designed to capture smaller airborne particles, including dust, pollen, and pet dander. As for value for your money, I think they're worth the upgrade, especially when you consider how important the air quality in your home is. Sometimes you don't know what you've been missing until you find something better. I'm glad I found these!

Helpful?1ZEAVZ8YGG8X902092881
Sep 20, 2026
Reviewer name: Jerry
Item details
Count per pack: 1
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

FILTERBUY a less expensive alternative

This FILTERBUY brand filter is MERV rated the same as the FILTRETE brand I have been using but costs about 1/2 the price. They look very similar, have re-enforced pleats, and are rated for allergen removal. I would recommend them for your HVAC system.

Helpful?1ZEAVZ8YGG8X902092881
Sep 16, 2026
Reviewer name: Customer
5 out of 5 stars
5 out of 5 stars review

My filters came nicely boxed

My filters came nicely boxed and they were in perfect condition. I replaced the same size that was in my air-conditioning vent area and I had a gentleman out to clean my vents and he told me my size is actually probably a 16. 5 so it would be a 16. 5 x 25 by one. Kind of crazy, but the product was perfect.

Review from Filterbuy
Helpful?1ZEAVZ8YGG8X902092881
Current price is $39.95
Price when purchased online
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Subscribe, Your usuals, on your schedule, Save time and stay stocked!, $39.95
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Sold and shipped by FilterbuyPro Seller
4.595481670929241 out of 5 stars
4.6 stars out of 5, based on 4692 seller reviews(4.6)
Extended holiday returns
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