Customer reviews from Filterbuy
Filterbuy - 21.5x21.5x1 MERV 11 Pet & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (4-Pack) - Gold
Average customer rating
4.6
(3,905 Reviews)
Rating breakdown 3,905 reviews
5 Stars
3,098
4 Stars
390
3 Stars
196
2 Stars
88
1 Star
133
Customer Reviews for Filterbuy - 21.5x21.5x1 MERV 11 Pet & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (4-Pack) - Gold
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
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
Customer Rating
1
30" filter was a 1/2" inch short
on September 17, 2025
Posted by: Winslow S.
I purchased a 24" x 1" and a 30" x 1" filter, both stating they were 8" tall; the 30" came in a full 1/2" short, at 7. 5, where as the 24 came in at a full 8". How do you account for that? Now there's a gap in the filter and debris can get in the fan; not good enough
Written by a customer while visiting Filterbuy
Customer Rating
5
Love your filters quality at
on September 15, 2025
Posted by: Anonymous
Love your filters quality at a cheaper price thanks
Written by a customer while visiting Filterbuy
Customer Rating
5
I like the ease of
on September 15, 2025
Posted by: Anonymous
I like the ease of ordering and the correct size for my a c.
Written by a customer while visiting Filterbuy
Customer Rating
5
Live in a Dust Bowl
on September 14, 2025
Posted by: Anonymous
[This review was collected as part of a promotion.] I live in the desert Southwest that sees frequent dust storms. In the Summer I turn my system fan on 24 hours a day. I change the filters every 6 to 8 weeks. I rarely have to dust because the system filters do such great job of filtering all the dust out of the inside house air. I know I can breathe freely inside.
Written by a customer while visiting Filterbuy
Customer Rating
5
I really like these filters,
on September 13, 2025
Posted by: Gloria J.
I really like these filters, they work great, always arrive quickly, the price is affordable and their made here in the USA which is really important to me.
Written by a customer while visiting Filterbuy
Customer Rating
5
Good quality, they fit in
on September 13, 2025
Posted by: Anonymous
Good quality, they fit in my furnace better than the one spot uptown and its great to have them delivered. Highly recommend.
Written by a customer while visiting Filterbuy