Customer reviews from Filterbuy
Filterbuy - 20x23x1 MERV 11 Pet & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (3-Pack) - Gold
Average customer rating
4.6
(3,949 Reviews)
Rating breakdown 3,949 reviews
5 Stars
3,135
4 Stars
393
3 Stars
198
2 Stars
89
1 Star
134
Customer Reviews for Filterbuy - 20x23x1 MERV 11 Pet & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (3-Pack) - Gold
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
Customer Rating
5
Always great
on August 2, 2026
Posted by: Customer
I need some odd sizes -- they have them. And I can get roughly twice as many for the same price I paid locally. But don't let Filterbuy know that.
Written by a customer while visiting Filterbuy
Customer Rating
5
This is the only place
on July 31, 2026
Posted by: Customer
This is the only place I could find this size filter for my furnace. I prefer these to the washable one that I have.
Written by a customer while visiting Filterbuy
Customer Rating
3
Filter size 20x24
on July 30, 2026
Posted by: Customer
Filters are fine but they are undercut and allow air to bypass the filter. They need to be appropriately 1/4” bigger all around to fit properly.
Written by a customer while visiting Filterbuy
Customer Rating
5
Very Good Filters
on July 29, 2026
Posted by: Customer
This is not the first time I have bought these filters. I thinks they are as good as any that I buy locally and cost a lot less, so I can buy more and keep a good clean filter in my HVAC system.
Written by a customer while visiting Filterbuy
Customer Rating
1
Bent
on July 27, 2026
Posted by: Customer
3 of the four filters were bent and some the cardboard housing was torn. Wrapped in plastic but no other packing material. Not your normal customer svc
Written by a customer while visiting Filterbuy
Customer Rating
1
To may emails.
on July 23, 2026
Posted by: Customer
The product is fine. The number of emails that you send is way to much.
Written by a customer while visiting Filterbuy
Customer Rating
5
Excellent
on July 23, 2026
Posted by: Customer
They are simply the best filters you can buy. They're reasonably priced and a great quality product.
Written by a customer while visiting Filterbuy