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
5
Quality and the Best Price
on March 27, 2026
Posted by: Customer
I am never disappointed with Filterbuy 11 MERV products. I buy in bulk for all of my family and the price can't be beat!
Written by a customer while visiting Filterbuy
Customer Rating
5
Same great filter, repeat customer ×4 or 5?
on March 26, 2026
Posted by: Customer
I feel like im in The Stanley Parable Delux edition. .
I always order this filter. I always give it 5 stars. Why keep blowing up my mailbox begging for a Review? Obviously if im a repeat customer is love the product.
I always order this filter. I always give it 5 stars. Why keep blowing up my mailbox begging for a Review? Obviously if im a repeat customer is love the product.
Written by a customer while visiting Filterbuy
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