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
(3,949 Reviews)
Rating breakdown 3,949 reviews
5 Stars
3,135
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
Early
on May 20, 2026
Posted by: Customer
Filters look nice, review of them is a bit early. Ask me again in 4 months once I’ve used one.
Written by a customer while visiting Filterbuy
Customer Rating
3
Please cancel my subscription. I
on May 18, 2026
Posted by: Customer
Please cancel my subscription. I do not need it any longer.
Written by a customer while visiting Filterbuy
Customer Rating
5
Questionable quality
on May 17, 2026
Posted by: Customer
The 14X14 filters are fine. I question why the 18X24 filters are not marked on the frame with the Merv11 marking? I am not convinced I received the same quality filters I expected.
Written by a customer while visiting Filterbuy
Customer Rating
5
The best for the price.
on May 17, 2026
Posted by: Customer
I live in Florida with two dogs. . . we all have hay fever, yep even the dogs. So top notch filters are a must, but also don't want to starve air to the a/c air handler, so the MERV 11s are wonderful. Can't recommend them too highly.
Written by a customer while visiting Filterbuy
Customer Rating
5
Wow
on May 16, 2026
Posted by: Customer
Great filters and saved my self more than 75% on what I would have spent.
Written by a customer while visiting Filterbuy
Customer Rating
5
Filters for Future Use
on May 15, 2026
Posted by: Customer
Purchased filters from area store but wanted standby filters for eventual change. Will try your brand to compare to make sure my nose is not dripping all of the time in our house. Yours will be used in the next two three month round - then I can be able to tell if it was worth it!
Written by a customer while visiting Filterbuy
Customer Rating
5
The Air I Breathe
on May 14, 2026
Posted by: Customer
After installing the MERV 11 filter, the air I breathe in is like a crisp, clean wind dancing through the trees.
Written by a customer while visiting Filterbuy
Customer Rating
5
I have 2 cats in
on May 14, 2026
Posted by: Customer
I have 2 cats in a small house. These filters are very the best.
Written by a customer while visiting Filterbuy