Customer reviews from Filterbuy
Filterbuy - 21x21x4 MERV 11 Pet & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (12-Pack) - Gold
Average customer rating
4
(1,144 Reviews)
Rating breakdown 1,144 reviews
5 Stars
660
4 Stars
148
3 Stars
119
2 Stars
91
1 Star
126
Customer Reviews for Filterbuy - 21x21x4 MERV 11 Pet & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (12-Pack) - Gold
Customer Rating
5
12x24x4 MERV 11 Pleated Filter
on June 1, 2025
Posted by: Anonymous
Just what I ordered & just what my furnace requires! Thanks
Written by a customer while visiting Filterbuy
Customer Rating
5
Very well made filter. Happy
on May 30, 2025
Posted by: Camille I.
Very well made filter. Happy with it. Will definitely be reordering !!
Written by a customer while visiting Filterbuy
Customer Rating
4
Not like they used to be
on May 29, 2025
Posted by: Anonymous
Two shipments came crushed but they replaced them. They so seem made more cheaply then before. We have bought from filter buy for years.
Written by a customer while visiting Filterbuy
Customer Rating
5
Filters
on May 26, 2025
Posted by: Bobbie J.
Received; saving for next replacement! Please note I did not set up auto review which appears to be the case! I will call when needed
Written by a customer while visiting Filterbuy
Customer Rating
2
Unsatisfied
on May 26, 2025
Posted by: Sujith G.
The product doesn't fit into my hvac , leaves a gap on the top. Definitely not a replacement for Apirlaire filter
Written by a customer while visiting Filterbuy
Customer Rating
1
Check your size
on May 23, 2025
Posted by: Anonymous
The dimensions of the filters I bought were printed on the box as 16x25x4. In smaller print were other dimensions and these were the actual measurements. These filters are not 16x25x4. They were too small for my furnace and were unusable.If you truly need the 16x25x4, dont buy these.
Written by a customer while visiting Filterbuy
Customer Rating
1
Thats what she said
on May 21, 2025
Posted by: Anonymous
These filters I bought arent the size as advertised. I ordered the 20x25x4 and theyre not that size. I havent taken the time to measure them but the filter I removed which is listed as the same size as the ones I bought from filter buy, fits snugly into the furnace while the new ones seem like theyre only 3 inches thick leaving a lot of room for debris to go around them. Waste of money !
Written by a customer while visiting Filterbuy
Customer Rating
5
Excellent
on May 17, 2025
Posted by: Anonymous
The filters appear to be excellent. We will see how they do now that they are installed.
Written by a customer while visiting Filterbuy