Customer reviews from Filterbuy
Filterbuy - 21.5x21.5x1 MERV 11 Pet & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (4-Pack) - Gold
Average customer rating
4.6
(3,905 Reviews)
Rating breakdown 3,905 reviews
5 Stars
3,098
4 Stars
390
3 Stars
196
2 Stars
88
1 Star
133
Customer Reviews for Filterbuy - 21.5x21.5x1 MERV 11 Pet & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (4-Pack) - Gold
Customer Rating
5
I always get really good
on June 28, 2026
Posted by: Customer
I always get really good service from Filter Buy. The filters are of high quality and work very well, I changed the filters approximately every 3 months and the system seems to work out really well. Thank you for a very high quality product. Thank you Mike
Written by a customer while visiting Filterbuy
Customer Rating
1
They were very badly made.
on June 27, 2026
Posted by: Customer
They were very badly made. Most of them was squished waste of money.
Written by a customer while visiting Filterbuy
Customer Rating
5
Awesome filters so easy to
on June 27, 2026
Posted by: Customer
Awesome filters so easy to order. The price it outstanding. Thank you
Written by a customer while visiting Filterbuy
Customer Rating
4
D. D. review
on June 27, 2026
Posted by: Customer
Filters appear to be good quality. Packaging could use a little help. I suggest corner protectors in the box. The filters are useable but a bit crumpled on the corners.
Written by a customer while visiting Filterbuy
Customer Rating
5
Perfect Fit
on June 27, 2026
Posted by: Customer
Replacing the Filtrete we have been using because these are a much EASIER fit. We have ceiling vents. These fit without having to force them in over the screws. We are seniors. Not safe on a stool/ladder having to force them in.
Written by a customer while visiting Filterbuy
Customer Rating
5
Been using your brand for
on June 25, 2026
Posted by: Customer
Been using your brand for several years. Great product, well made.
Written by a customer while visiting Filterbuy
Customer Rating
4
Pleated air filter dimensions
on June 25, 2026
Posted by: Customer
Outside dimensions are smaller than most all other filters I've used. The filters have a loose fit in the filter housing. Since all 5 of my filters are in the ceilings, the filters drop down after the blowers shuts off. That's OK with me, but the filters snap back up each time the blower starts, resulting in an objectionable snap. I will be going back to my big box store's filters even though they are more expensive.
Written by a customer while visiting Filterbuy
Customer Rating
5
Merv 11 filters
on June 22, 2026
Posted by: Customer
Good quality, well made & they do a great job filtering the air.
Written by a customer while visiting Filterbuy