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
(6,998 Reviews)
Rating breakdown 6,998 reviews
5 Stars
5,166
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
Great filters
on August 8, 2026
Posted by: Customer
I have my HVAC checked bi annually. They always ask what filters I use and compliment how well my system looks.
Written by a customer while visiting Filterbuy
Customer Rating
5
Only 1 complaint
on August 8, 2026
Posted by: Customer
I purchase filters in bulk for savings purposes and wish they were wrapped in a protective layer to keep clean and dust free until they were needed
Written by a customer while visiting Filterbuy
Customer Rating
2
Poor manufacturing
on August 6, 2026
Posted by: Customer
I was disappointed with how the filter appeared to be made hastily and it seems like dirty air might be able to sneak through some areas. I expected better quality for the price. .
Written by a customer while visiting Filterbuy
Customer Rating
1
Filters Didn't Work for my A/C
on August 6, 2026
Posted by: Customer
I live in a condo and the A/C is very old. The 3/4" thickness didn't work. Had to purchase elsewhere. They were great regarding the return!
Written by a customer while visiting Filterbuy
Customer Rating
5
20x30x1 Merv 11 Pleated Air Filter
on August 4, 2026
Posted by: Customer
Always pleased with the Filter Buy products. Quality filters and good prices!
Written by a customer while visiting Filterbuy
Customer Rating
5
Awesome Filters and Easy to Purchase
on August 3, 2026
Posted by: Customer
These filters really help keep our home cleaner and our HVAC running more efficiently.
Written by a customer while visiting Filterbuy
Customer Rating
5
Good price and I don’t
on August 3, 2026
Posted by: Customer
Good price and I don’t have to change it every month and it works much better with filtering
Written by a customer while visiting Filterbuy
Customer Rating
3
They filter but they are noisy
on August 3, 2026
Posted by: Customer
These filters are not quite as long or wide as the filters that have been using for the last 5 years.
The filters themselves are noisier than my old ones. In fact, the sound they make as the air passes through them is about the sound my old ones made when it was time to replace them.
The second problem is since they are a bit shorter in length and width, they don't fit snug in their location so each time the A/C starts up you hear them go "THWAP" and when the A/C turns off, you can hear them go "pfump" as they settle back into position.
I will most likely swap them out early as I have four air returns in my house and find the noises a bit anoying.
Written by a customer while visiting Filterbuy