Filterbuy 18x18x1 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 2-Pack
Filterbuy 18x18x1 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 2-Pack
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Filterbuy 18x18x1 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 2-Pack

|20.4K ratings

Key item features

  • UNIVERSAL COMPATIBILITY: 18x18x1 replacement air filters for your furnace, air conditioner, or heat pump enhance HVAC system efficiency and support a healthy lifestyle (actual size: 17.75" x 17.75" 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

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Customer ratings & reviews

4.7 out of 5 stars
stars
20.4K ratings5,894 reviews
How item rating is calculated
  1. 5 stars87% (17.8K)
  2. 4 stars7% (1,368)
  3. 3 stars2% (397)
  4. 2 stars1% (209)
  5. 1 star3% (671)
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Showing 1-3 of 5,894 reviews

Jul 14, 2026
Reviewer name: Customer
5 out of 5 stars
5 out of 5 stars review

Great find!

My a/c went out a couple weeks ago (when it was 3 million degrees). I asked the repair man about air filters. He told me that the expensive filters tend to not let enough air through. So, I'm thrilled to have found Filterbuy! A great price and seem to be doing their job. Will definitely continue buying them.

Review from Filterbuy
Helpful?1QEU9E3CJKM1185901509
Jul 22, 2026
Reviewer name: Customer
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?1QEU9E3CJKM1185901509
Aug 11, 2026
Reviewer name: Customer
5 out of 5 stars
5 out of 5 stars review

I appreciate the the help

After first ordering the wrong size, I called to return them. I was prepared for an additional charge for the return and a higher price for the corrected size. Instead I was told to just donate the incorrect size and a new 6-pack of the corrected size sent immediately and received in 2 days! This was a perfect fit! Now I just have to change the filter in the A/C every other month and I'm set for the year! Thanks bunches!

Review from Filterbuy
Helpful?1QEU9E3CJKM1185901509
Current price is $29.98$29.98/in
Price when purchased online
  • Free shipping
  • Free 30-day returns
Subscribe, Your usuals, on your schedule, Save time and stay stocked!, $29.98
Your usuals, on your schedule
Save time and stay stocked!
One-time purchase $29.98

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Arrives by Wed, Sep 23
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Sold and shipped by FilterbuyPro Seller
4.593524392911836 out of 5 stars
4.593524392911836 stars out of 5, based on 4571 seller reviews(4.6)
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