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Filterbuy 20x22x4 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 4-Pack
Key item features
- UNIVERSAL COMPATIBILITY: 20x22x4 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 21.50" x 3.63")
- 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 8 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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Showing 1-3 of 994 reviews
Aug 21, 2026
Reviewer name: Customer
5 out of 5 stars
Great service and product!
I always hated buying furnace filters. Box stores were always expensive, if they had them in stock. Filterbuy is a very decent price for buying a years worth a time. I change my furnace filter monthly due to have a smaller filter and also with pets. The shipment is always very quick and comes well packaged. Highly recommend Filterbuy!
Review from Filterbuy
Helpful?6DA3XSOR55MR162028891
Aug 21, 2026
Reviewer name: Customer
5 out of 5 stars
They Fit.
I had a new unit installed and the fan runs continuously. But my electric usage is down. I have four cats and one large hairy dog; live in a dusty environment and need to change filters every two weeks. The big box store was charging almost a dollar more for a MERV 5 filter and I had to bend them to get them to fit, which left gaps along the sides. These filters fit and they cost quit a bit less than what I would have paid for a MERV 8 in store.
Review from Filterbuy
Helpful?6DA3XSOR55MR162028891
Sep 13, 2026
Reviewer name: Customer
5 out of 5 stars
Best filter I tried.
It was great!, Quick shipment, like the quality and also like the extra comments that were sent about maintenance of the different A/C units we have. This is a company that seems to care about their customers.
Review from Filterbuy
Helpful?6DA3XSOR55MR162028891
Current price is USD$123.96
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4.594895989706198 out of 5 stars
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