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
Size didnt fit.
on August 27, 2025
Posted by: Anonymous
Filter buy is suppose send me replacement filters. Its only been a week. They are supposed to call or text me today. They seem like a good company to work with.
Written by a customer while visiting Filterbuy
Customer Rating
2
Quality is great but measurements
on August 26, 2025
Posted by: Anonymous
Quality is great but measurements and fit is not good
Written by a customer while visiting Filterbuy
Customer Rating
3
Overall size is not accurate
on August 26, 2025
Posted by: Anonymous
Filter quality is great but the size is not accurate should be half a millimeter smaller in all of the directions. Then you want to install that filter that doesn't matter which size you have to damage the filter to fit. I ordered 12 of them in two types six of each ivish I ordered just one
Written by a customer while visiting Filterbuy
Customer Rating
5
Excellent design, quality and cleaning.
on August 26, 2025
Posted by: Anne-Marie F.
Excellent design, quality and cleaning. Very affordable!
Written by a customer while visiting Filterbuy
Customer Rating
4
To small
on August 26, 2025
Posted by: Anonymous
The filters are undersized so that they fit all filter boxes. This leaves room for air to go around the filter in my box.
Written by a customer while visiting Filterbuy
Customer Rating
5
Great company
on August 26, 2025
Posted by: Anonymous
These measurements were custom made and they fit perfect. The size is now saved and I can keep ordering them as needed. I have used them for quite a few years.
Written by a customer while visiting Filterbuy
Customer Rating
5
Great choice!
on August 26, 2025
Posted by: Anonymous
This filter from Filter buy is much better than the skinny filter that I used to use!
Written by a customer while visiting Filterbuy
Customer Rating
5
Best convenient filters
on August 26, 2025
Posted by: Anonymous
I have a 3 zone system that requires 4 different filters and found these to be the most cost effective.
Written by a customer while visiting Filterbuy