Hero image 0 of Filterbuy 28x30x4 Air Filter MERV 11 Allergy Defense, Pleated HVAC AC Furnace Filter Replacement, 3-Pack, 0 of 8
Filterbuy 28x30x4 Air Filter MERV 11 Allergy Defense, Pleated HVAC AC Furnace Filter Replacement, 3-Pack
Key item features
- UNIVERSAL COMPATIBILITY: 28x30x4 replacement air filters for your furnace, air conditioner, or heat pump enhance HVAC system efficiency and support a healthy lifestyle (actual size: 27.38" x 29.38" x 3.63")
- 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 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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Customer ratings & reviews
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Showing 1-3 of 1,161 reviews
Oct 4, 2026
Reviewer name: Customer
5 out of 5 stars
Perfect fit, great price
Had a hard time finding the right size filter for my air return at a decent price. FilterBuy had what I needed at great price and now it's set up on auto order so I don't even have to think about it. Great service, great product, better price.
Review from Filterbuy
Helpful?0USMV0CG6W6J377259090
Jun 25, 2026
Reviewer name: Customer
5 out of 5 stars
Well Made, good price
These are very well made and much more affordable than what is sold at the local retailer. I like that I can put these on a subscription that suits my needs. I have always rented and remembering to change the filters has always been a chore. I want my new home's a/c to work well, timely filter replacement is important for that and this makes it easier to do so.
Review from Filterbuy
Helpful?0USMV0CG6W6J377259090
Aug 27, 2026
Reviewer name: Customer
5 out of 5 stars
Perfect fit
Filter fit perfectly. Former homeowner had never changed put filter, for at least 10 years, and it was so nasty. I cleaned area out as best I could, and once the filter arrived, placed it where it belonged. It fit perfectly and the air is so much fresher!
Review from Filterbuy
Helpful?0USMV0CG6W6J377259090
Current price is USD$132.99
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4.594893617021277 out of 5 stars
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