Customer reviews from Filterbuy
Filterbuy - 13x21.5x1 MERV 11 Pet & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (4-Pack) - Gold
Average customer rating
4.4
(7,007 Reviews)
Rating breakdown 7,007 reviews
5 Stars
5,174
4 Stars
754
3 Stars
439
2 Stars
245
1 Star
395
Customer Reviews for Filterbuy - 13x21.5x1 MERV 11 Pet & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (4-Pack) - Gold
Customer Rating
5
This is the third time
on March 25, 2026
Posted by: Customer
This is the third time in a month buying filters from you. We have multiple properties and always am able to find the sizes I need. They ordering is easy, fast and reliable. Thank you for manufacturing in the USA.
Written by a customer while visiting Filterbuy
Customer Rating
4
Size
on March 25, 2026
Posted by: Customer
I purchased the 16x25x4 inch filter, but wish I would have scaled up like your ordering instructions said to do.
Written by a customer while visiting Filterbuy
Customer Rating
5
Great product
on March 25, 2026
Posted by: Customer
I have purchased filters for the last few years from you. Always have gotten a good product.
Written by a customer while visiting Filterbuy
Customer Rating
5
Just as advertised
on March 25, 2026
Posted by: Customer
They work real well and st alower cost than the store brought filters
Written by a customer while visiting Filterbuy
Customer Rating
5
Items fits perfectly and does
on March 25, 2026
Posted by: Customer
Items fits perfectly and does what it is made for, the quality is good and well worth the price compared to the big guys.
Written by a customer while visiting Filterbuy
Customer Rating
5
I'm a believer!!
on March 23, 2026
Posted by: Anonymous
I used to use a name brand filter for my furnace. Then I bought a new furnace and it took the same size filter(s). I bought a pair and after using them for 90 days believed that they did just as good a job at half the cost that I went online and bought a years worth. The savings was substantial for someone who's retired and on a fixed income. I've used the same filters for the past several years and see no need to pay double the price when these do just as good a job. They actually fit better in the space provided in the furnace ducting. I have a couple of cats - of course they shed but these filters take care of that problem as well. I just change them every 65-70 days now instead of 90 as recommended by the furnace manuf.
Written by a customer while visiting Filterbuy
Customer Rating
5
Easy and quick
on March 22, 2026
Posted by: Anonymous
Simple and easy to use. Thats why I will continue to use Filterbuy.
Written by a customer while visiting Filterbuy
Customer Rating
5
Very effective
on March 21, 2026
Posted by: Anonymous
I never have to worry if I have filters and they are great quality. Very effective.
Written by a customer while visiting Filterbuy