Customer reviews from Filterbuy
Filterbuy - 21x21.5x1 MERV 11 Pet & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (5-Pack) - Gold
Average customer rating
4.6
(3,952 Reviews)
Rating breakdown 3,952 reviews
5 Stars
3,137
4 Stars
393
3 Stars
199
2 Stars
89
1 Star
134
Customer Reviews for Filterbuy - 21x21.5x1 MERV 11 Pet & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (5-Pack) - Gold
Customer Rating
5
Happy Customer
on February 9, 2026
Posted by: Anonymous
Excellent value for air filters. I am a repeat customer.
Written by a customer while visiting Filterbuy
Customer Rating
5
Excellent filters
on February 9, 2026
Posted by: Anonymous
These filters work very well. Happy with our purchase
Written by a customer while visiting Filterbuy
Customer Rating
5
Good filters at a good price
on February 8, 2026
Posted by: Anonymous
Great bang for the buck! These filters are very well manufactured. They arrived on time and its a very economical way to keep the air in your house clean and your furnace fan/blower clean. Thank you.
Written by a customer while visiting Filterbuy
Customer Rating
5
Way to buy
on February 8, 2026
Posted by: Anonymous
Easy way to buy and replace your HVAC filters save money and time and support an a American company.
Written by a customer while visiting Filterbuy
Customer Rating
5
I have used them for
on February 7, 2026
Posted by: Anonymous
I have used them for a while. I saw them on line so I ordered them. Very pleased.
Written by a customer while visiting Filterbuy
Customer Rating
5
Merv 11
on February 6, 2026
Posted by: Anonymous
Merv11 is the way to go if you want a step up in air purification for your house , especially if you have any pets.
Written by a customer while visiting Filterbuy
Customer Rating
5
Better than the ones I
on January 7, 2026
Posted by: Anonymous
Better than the ones I was using. Much cheaper price. I will buy again .
Written by a customer while visiting Filterbuy
Customer Rating
5
Perfect fit
on October 10, 2025
Posted by: Anonymous
I was very impressed with the exact fitting of these filters. We have tried other filters that just didn't fit. Thankful to find these with the exact fit
Written by a customer while visiting Filterbuy