Customer reviews from Filterbuy
Filterbuy - 21.5x23.5x1 MERV 8 Dust & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (1-Pack) - Silver
Average customer rating
4.7
(5,923 Reviews)
Rating breakdown 5,923 reviews
5 Stars
4,915
4 Stars
500
3 Stars
213
2 Stars
113
1 Star
182
Customer Reviews for Filterbuy - 21.5x23.5x1 MERV 8 Dust & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (1-Pack) - Silver
Customer Rating
5
Cancellation
on August 7, 2026
Posted by: Customer
Please cancel any scheduled deliveries. We no longer need that size of filter.
Written by a customer while visiting Filterbuy
Customer Rating
5
They arrive and they work.
on August 6, 2026
Posted by: Customer
The filters work. If you have sinus problems or allergies, just changing filters every quarter makes your life better. Makes you get sick less often.
Written by a customer while visiting Filterbuy
Customer Rating
4
Size
on August 6, 2026
Posted by: Customer
Dissappointed, Dimensions of the filter ran small. Almost did not cover opening completely. Old store bought filters are more true to size.
Written by a customer while visiting Filterbuy
Customer Rating
5
Great Price!
on August 6, 2026
Posted by: Customer
Good quality filters. No more going store to store trying to find out weird size! Love the reminders to change filter.
Written by a customer while visiting Filterbuy
Customer Rating
5
We were advised to use
on August 6, 2026
Posted by: Customer
We were advised to use filters in our cold air returns, rather than a large one in the air handler. Filter Buy had the exact filter sizes we needed, They are well put together. and the price was very competitive.
Written by a customer while visiting Filterbuy
Customer Rating
5
20x25x1 MERV 8 Pleated Air Filter
on August 5, 2026
Posted by: Customer
I've been using these for many years. They work very well, even with multiple cats.
Written by a customer while visiting Filterbuy
Customer Rating
4
First time buyer. Not time
on August 5, 2026
Posted by: Customer
First time buyer. Not time enough to tell performance. Price was good
Written by a customer while visiting Filterbuy
Customer Rating
5
Great fit.
on August 4, 2026
Posted by: Customer
I used to buy brand name filters,, but they never fit. Your filters fit perfectly, saving me a lot of frustration.
Written by a customer while visiting Filterbuy