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
(7,001 Reviews)
Rating breakdown 7,001 reviews
5 Stars
5,169
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
First timer
on September 24, 2025
Posted by: Anonymous
I just bought these filters. They seem to be sturdy and durable. We will see what it looks like in 3 months
Written by a customer while visiting Filterbuy
Customer Rating
5
Always the Best
on September 24, 2025
Posted by: Anonymous
I always purchase Filterbuy filters because they do make a difference. My family has allergies and these filters help so much.
Written by a customer while visiting Filterbuy
Customer Rating
5
Works great, fits like it
on September 24, 2025
Posted by: Jeremy F.
Works great, fits like it should. . . Strangely excited about changing it in a few months to see what all it filtered for us.
Written by a customer while visiting Filterbuy
Customer Rating
2
Thought filter would be closer
on September 22, 2025
Posted by: Barry S.
Thought filter would be closer to 5 inches in thickness. The Honeywell brand i was using has the exact same dimensions as filterfast but call there's 4 inches. See photo
Written by a customer while visiting Filterbuy
Customer Rating
5
Good quality filters for the
on September 22, 2025
Posted by: Randy W.
Good quality filters for the price and made in the USA!
Written by a customer while visiting Filterbuy
Customer Rating
5
its a air filter. it
on September 20, 2025
Posted by: Anonymous
its a air filter. it filters air. came to me as an air filter. no worries.
Written by a customer while visiting Filterbuy
Customer Rating
3
Good price. Although the box
on September 18, 2025
Posted by: Cory F.
Good price. Although the box is the right size filter they are thinner the 4in filter. Too much wiggle room when inserted into the AC
Written by a customer while visiting Filterbuy
Customer Rating
5
This is the first time
on September 17, 2025
Posted by: Anonymous
This is the first time that I am using A/C filters from Filterbuy. Although they were slightly shorter (disclosed on their website) than my previous filters, they actually fit better at my vent openings. I used to have to cut the corners off of the previous brands of filters that I have used in the past because they were much too tight fitting. I think I will be using Filterbuy filters from now on.
Written by a customer while visiting Filterbuy