Customer reviews from Filterbuy
Filterbuy - 21x21x1 MERV 8 Dust & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (4-Pack) - Silver
Average customer rating
4.7
(5,909 Reviews)
Rating breakdown 5,909 reviews
5 Stars
4,903
4 Stars
498
3 Stars
213
2 Stars
113
1 Star
182
Customer Reviews for Filterbuy - 21x21x1 MERV 8 Dust & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (4-Pack) - Silver
Customer Rating
3
filters ok packing not
on September 12, 2026
Posted by: Customer
filters are fine but the box they use is junk. . . ups was able to crush it in on one corner no issues. . . they used the filters the make the box stronger. . . yah right thin cardboard frame . . . not impressed
Written by a customer while visiting Filterbuy
Customer Rating
5
Work great
on September 10, 2026
Posted by: Customer
These filters are great, change them once a month and they are a tad smaller that what I usually buy. They fit exactly right, with no bending.
Written by a customer while visiting Filterbuy
Customer Rating
5
Filters
on September 8, 2026
Posted by: Customer
Perfect fit. Received without issue and as anticipated.
Recommend
Recommend
Written by a customer while visiting Filterbuy
Customer Rating
5
Opinion on filters
on September 8, 2026
Posted by: Customer
Unfortunately I bought the wrong size I’ll do a reorder once I need them
Written by a customer while visiting Filterbuy
Customer Rating
5
Filters
on September 8, 2026
Posted by: Customer
Haven’t used yet but they look better than what I had bought so I returned them. I’m using the last of my good ones then I will be using your brand. I’m sure I will be satisfied
Written by a customer while visiting Filterbuy
Customer Rating
5
Filter
on September 7, 2026
Posted by: Customer
Fits good but it’s to early to tell how well it works.
Written by a customer while visiting Filterbuy
Customer Rating
3
Don’t measure up
on September 6, 2026
Posted by: Customer
Filers do not measure the exact length. They come up SHORT.
Written by a customer while visiting Filterbuy
Customer Rating
5
Excellent quality
on September 6, 2026
Posted by: Customer
I bought these filters for my new condo and used one during a remodel, cleaned the air and protected the AC.
Written by a customer while visiting Filterbuy