Filterbuy 28x30x4 Air Filter MERV 11 Allergy Defense, Pleated HVAC AC Furnace Filter Replacement, 3-Pack
Filterbuy 28x30x4 Air Filter MERV 11 Allergy Defense, Pleated HVAC AC Furnace Filter Replacement, 3-Pack
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Filterbuy 28x30x4 Air Filter MERV 11 Allergy Defense, Pleated HVAC AC Furnace Filter Replacement, 3-Pack

|20.8K ratings

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

4.6 out of 5 stars
stars
20.8K ratings7,013 reviews
How item rating is calculated
  1. 5 stars82% (17.1K)
  2. 4 stars8% (1,767)
  3. 3 stars3% (688)
  4. 2 stars2% (381)
  5. 1 star4% (898)
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Showing 1-3 of 7,013 reviews

Jun 25, 2026
Reviewer name: Customer
Sold byFilterbuy
5 out of 5 stars
5 out of 5 stars review

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
Jul 7, 2026
Reviewer name: Customer
Sold byFilterbuy
5 out of 5 stars
5 out of 5 stars review

Great Filter

I have been using Filterbuy filters for numerous years and change them out regularly. I have always been pleased with just how good of a filter they are compared to other filters that do not even compare in quality. The price is very reasonable so that is why I always purchase 12 filters at a time and I received them within 2 days of ordering. I will continue using Filterbuy so I do not have to worry about my filters being great!

Review from Filterbuy
Helpful?0USMV0CG6W6J377259090
Jun 28, 2026
Reviewer name: Customer
Sold byFilterbuy
5 out of 5 stars
5 out of 5 stars review

I always get really good

I always get really good service from Filter Buy. The filters are of high quality and work very well, I changed the filters approximately every 3 months and the system seems to work out really well. Thank you for a very high quality product. Thank you Mike

Review from Filterbuy
Helpful?0USMV0CG6W6J377259090
Current price is $120.99
Price when purchased online
  • Free shipping
  • Free 30-day returns
Subscribe, Your usuals, on your schedule, Save time and stay stocked!, $120.99
Your usuals, on your schedule
Save time and stay stocked!
One-time purchase $120.99

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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)
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