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
My go to for filters
on March 2, 2026
Posted by: Anonymous
My go to for filters . Nice quality at an affordable price
Written by a customer while visiting Filterbuy
Customer Rating
5
Rely on them
on March 1, 2026
Posted by: Anonymous
I really like the fact that they work just as good as any I have ever used. The prices and delivery are great!
Written by a customer while visiting Filterbuy
Customer Rating
4
Not a bad filter
on March 1, 2026
Posted by: Anonymous
So far so good. I mean its very hard to tell if its doing better than others. . I do appreciate the sturdiness, the quality, and the decent price. I would recommend based on those things.
Written by a customer while visiting Filterbuy
Customer Rating
5
Second Shipment!
on March 1, 2026
Posted by: Anonymous
Great product! We have the furnace going all the time, and it's perfect timing to replace these monthly!
Written by a customer while visiting Filterbuy
Customer Rating
5
Great filters
on March 1, 2026
Posted by: Anonymous
These furnace filters fit perfectly, work well and don't have to be changed for several months. Great value also.
Written by a customer while visiting Filterbuy
Customer Rating
5
Great price
on March 1, 2026
Posted by: Anonymous
I always get good quality furnace filters for a good price.
Written by a customer while visiting Filterbuy
Customer Rating
5
Filters
on March 1, 2026
Posted by: Anonymous
Highly impressed with the filters.Will definitely order again
Written by a customer while visiting Filterbuy
Customer Rating
5
Just what the doctor ordered.
on February 28, 2026
Posted by: Anonymous
Just what the doctor ordered. They are great. Thanks
Written by a customer while visiting Filterbuy