Customer reviews from Filterbuy
Filterbuy - 20x20x4 MERV 11 Pet & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (6-Pack) - Gold
Average customer rating
4.4
(7,000 Reviews)
Rating breakdown 7,000 reviews
5 Stars
5,168
4 Stars
754
3 Stars
438
2 Stars
245
1 Star
395
Customer Reviews for Filterbuy - 20x20x4 MERV 11 Pet & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (6-Pack) - Gold
Customer Rating
5
Works great
on May 14, 2026
Posted by: Customer
You can tell the difference when you used them. Specially in Florida with all the pollen.
Written by a customer while visiting Filterbuy
Customer Rating
2
Not as snug as the OEM filter
on May 13, 2026
Posted by: Customer
This filter was about 1/4 inch shorter than the filter that came with the HVAC unit. I needed to pad the underside with strips of with cardboard, so that it would fit snugly up to the top of the slot, since air travels across the top.
Written by a customer while visiting Filterbuy
Customer Rating
5
This is my third time
on May 13, 2026
Posted by: Customer
This is my third time using Filterbuy. Always quick and affordable.
Written by a customer while visiting Filterbuy
Customer Rating
5
Best Filters
on May 12, 2026
Posted by: Customer
I really like these filters. They work perfectly. I notice little dust in my house!
Written by a customer while visiting Filterbuy
Customer Rating
5
Wonderful Service!
on May 10, 2026
Posted by: Customer
I’m so happy I discovered Filterbuy. It is so convenient to have them come directly to your door when needed. It makes it easy to repair some on schedule. The filters are really nice quality.
Written by a customer while visiting Filterbuy
Customer Rating
5
Having Pets
on May 10, 2026
Posted by: Customer
Having multiple family pets in my house, when I walk in the front door, I don't want to smell them as much as I love them. I use these filters to get ride of pet dander and smaller dust particle. Leaving the house smelling fresh and looking clean even between dustings.
Written by a customer while visiting Filterbuy
Customer Rating
4
A little hard to tell
on May 10, 2026
Posted by: Customer
A little hard to tell about the effectiveness of the filter after only having it in my system for 2 weeks. my previous filter had a lot more pleats (surface area) in it to collect contaminants.
Written by a customer while visiting Filterbuy
Customer Rating
5
Great filters
on May 9, 2026
Posted by: Customer
Filter Buy has furnished me with great filters for many years now, and I highly their filters and the fine reputation of the company.
Written by a customer while visiting Filterbuy