Customer reviews from Filterbuy
Filterbuy - 20x21x1 MERV 11 Pet & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (2-Pack) - Gold
Average customer rating
4.6
(3,948 Reviews)
Rating breakdown 3,948 reviews
5 Stars
3,134
4 Stars
393
3 Stars
198
2 Stars
89
1 Star
134
Customer Reviews for Filterbuy - 20x21x1 MERV 11 Pet & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (2-Pack) - Gold
Customer Rating
5
Great Company
on July 22, 2026
Posted by: Customer
So far so good! I upgraded from 8 to 11 Hoping to see an improvement in dust trapping. I'll let you know in a month or so. Thanks for making uality products,
Written by a customer while visiting Filterbuy
Customer Rating
3
They do not fit as
on July 22, 2026
Posted by: Customer
They do not fit as well as my old filters. They are too big.
Written by a customer while visiting Filterbuy
Customer Rating
5
Excellent Furnace Filters
on July 20, 2026
Posted by: Customer
Filterbuy merve 11 filter does an excellent job of filtering the air.
Written by a customer while visiting Filterbuy
Customer Rating
3
Received Damaged Again
on July 19, 2026
Posted by: Customer
All filters in last order were received bent or slightly smashed. Once again I informed filter buy.
Written by a customer while visiting Filterbuy
Customer Rating
5
Filterbuy filters
on July 18, 2026
Posted by: Customer
I would definitely recommend their filters! Great price for quality filters!
Written by a customer while visiting Filterbuy
Customer Rating
5
GOOD SERVICE
on July 18, 2026
Posted by: Customer
PROMPT SERVICE. FILTERS WERE AS DESCRIBED. I RECCOMEND GIVING FILTERBUY A TRY WHEN YOU NEED FILTERS.
Written by a customer while visiting Filterbuy
Customer Rating
2
Poor quality
on July 15, 2026
Posted by: Customer
The sides of the filter frame are not glued properly. I had to glue it together so it won’t fall apart during usage.
Written by a customer while visiting Filterbuy
Customer Rating
5
Great product
on July 15, 2026
Posted by: Customer
Everything worked great it was a little bit larger then the fitting but was able to squeeze it on
Written by a customer while visiting Filterbuy