Customer reviews from Filterbuy
Filterbuy - 21x23.5x1 MERV 11 Pet & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (3-Pack) - Gold
Average customer rating
4.6
(3,950 Reviews)
Rating breakdown 3,950 reviews
5 Stars
3,136
4 Stars
393
3 Stars
198
2 Stars
89
1 Star
134
Customer Reviews for Filterbuy - 21x23.5x1 MERV 11 Pet & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (3-Pack) - Gold
Customer Rating
3
New filter
on May 31, 2025
Posted by: Anonymous
After installing the filter I notice a loud whistling coming from the intake where the filter was installed. After doing some research found out it could be causing my blower motor to work to hard. Could also be from the high merv rating. I guess I will have to find a lower merv rating instead of an 11 to something lower.
Written by a customer while visiting Filterbuy
Customer Rating
5
Perfect size!
on May 31, 2025
Posted by: Anonymous
Finally, I can install a correct size air filter without crushing and bending it to fit. Thank you!
Written by a customer while visiting Filterbuy
Customer Rating
5
best price, hard to find
on May 30, 2025
Posted by: Murphy W.
best price, hard to find size, excellent,repeat customer
Written by a customer while visiting Filterbuy
Customer Rating
5
great filters!
on May 30, 2025
Posted by: Anonymous
these are great filters at a great price. I will be ordering here from now on!
Written by a customer while visiting Filterbuy
Customer Rating
5
Great product at great price.
on May 28, 2025
Posted by: Dori P.
Great product at great price. Makes the air noticeably cleaner and less dusty
Written by a customer while visiting Filterbuy
Customer Rating
5
Great
on May 28, 2025
Posted by: Anonymous
I really cant see the difference in the ones I bought before merv 8 I really like the new ones
Written by a customer while visiting Filterbuy
Customer Rating
3
custom size convenience. wish they
on May 25, 2025
Posted by: Anonymous
custom size convenience. wish they cost less though.
Written by a customer while visiting Filterbuy
Customer Rating
5
Excellent MERV 11 Custom Filters.
on May 25, 2025
Posted by: Anonymous
I always buy these filters because they really draw pollutants out of the air. You can't go wrong with these filters. They are dependable and get the job done.
Written by a customer while visiting Filterbuy