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
1
The density is too high
on February 17, 2026
Posted by: Anonymous
The core is so dense that i think its unhealthy for the hvac unit
Written by a customer while visiting Filterbuy
Customer Rating
3
It's ok for the price
on February 17, 2026
Posted by: Anonymous
The filter feels too thick like not breathable center .You get what you pay for
Written by a customer while visiting Filterbuy
Customer Rating
5
Do not send any more
on February 16, 2026
Posted by: Anonymous
Do not send any more filters unless i request them .
Written by a customer while visiting Filterbuy
Customer Rating
5
I have been using Filter
on February 15, 2026
Posted by: Anonymous
I have been using Filter Buy furnace filters for 20 years. They are well made and priced right. I change them out every 30 days.
Written by a customer while visiting Filterbuy
Customer Rating
4
Filters
on February 15, 2026
Posted by: Anonymous
I just received these filters. New to me and need to assess how they trap dirt particles before I can truly rate them. They seem to be made very well and the cost is reasonable.
Written by a customer while visiting Filterbuy
Customer Rating
3
Recent filter purchase
on February 15, 2026
Posted by: Anonymous
The 16X25X4 filters were a bit smaller than the honey wells I used to buy (they fit my opening perfectly) I actually had to shim up filterbuys. I can't understand why filterbuys would be smaller than Honeywells.
Written by a customer while visiting Filterbuy
Customer Rating
1
Im so upset about this
on February 14, 2026
Posted by: Anonymous
Im so upset about this because I did not subscribe it. Number one in the number two is without my permission. You charge my card and send me the filters when I already have them so that was very disappointing.
Written by a customer while visiting Filterbuy
Customer Rating
5
MERV 11 Pleated Filter
on February 14, 2026
Posted by: Anonymous
Does a great job, especially with pets in my house. I will purchase these again.
Written by a customer while visiting Filterbuy