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
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
Customer Rating
5
Filter buy
on June 22, 2026
Posted by: Customer
This is the way to buy AC filters and save big I buy them 6 pack at time compared to big box stores that overcharge. They are a great quality filters at a discount . They are made in America supporting American workers I praise this company Jim L
Written by a customer while visiting Filterbuy
Customer Rating
5
What do you mean?
on June 21, 2026
Posted by: Customer
Very satisfied. Great customer svce, came through on time frame, even a little earlier than anticipated. Stayed on top of order and most importantly, treated us like we mattered! Didn't have to deal with Ai crap. Refreshing. I kept the number and will put on my phone. Thank you! Linda Paulsen, JAX, FL.
Written by a customer while visiting Filterbuy
Customer Rating
5
Again nice filters at a
on June 19, 2026
Posted by: Customer
Again nice filters at a cost well below big box. I choose the merve that is right for my System and my health needs Best seen ever
Written by a customer while visiting Filterbuy
Customer Rating
5
Hopefully Will Fit
on June 19, 2026
Posted by: Customer
We bought these to replace the Filtrate filters. We have typical Florida ceiling vents. The Filtrate are VERY hard to insert. Read these are “smaller” and much easier to insert. We are seniors and do not feel safe climbing up, having to force the Filtrate in. We will begin using the Filterbuy next time we change them in a few months.
Written by a customer while visiting Filterbuy