Customer reviews from Filterbuy
Filterbuy - 20x25x4 MERV 11 Pet & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (2-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 - 20x25x4 MERV 11 Pet & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (2-Pack) - Gold
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
1
Filters did not fit returned
on July 31, 2026
Posted by: Customer
Filters did not fit returned and still waiting on replacements
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
Easy ordering
on July 29, 2026
Posted by: Customer
Love how you feed us to order and how quickly the product comes. Good quality Filters never disappointed. Thanks.
Written by a customer while visiting Filterbuy
Customer Rating
5
New Filterbuy Heat & Air Filters
on July 29, 2026
Posted by: Customer
I am very glad to have discovered Filterbuy. The ordering process is so simple to complete and receipt of the order is quick. I have recommended Filterbuy and will continue to do so.
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
3
Size is small
on July 29, 2026
Posted by: Customer
It fits barley in the furnace. All other filters I buy fits tightly.
Written by a customer while visiting Filterbuy