Customer reviews from Filterbuy
Filterbuy - 12x12x4 MERV 8 Dust & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (12-Pack) - Silver
Average customer rating
4.6
(7,994 Reviews)
Rating breakdown 7,994 reviews
5 Stars
6,423
4 Stars
705
3 Stars
347
2 Stars
212
1 Star
307
Customer Reviews for Filterbuy - 12x12x4 MERV 8 Dust & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (12-Pack) - Silver
Customer Rating
1
16x20x4 filter review
on March 18, 2026
Posted by: Anonymous
The filter is so undersized that I had to use the Honeywell case so it would not fall off the support rails. If I buy again, it would have to be a custom size. Which doesnt make sense to me.
Written by a customer while visiting Filterbuy
Customer Rating
5
So quick
on March 18, 2026
Posted by: Anonymous
The best place to look for and buy any size filter
Written by a customer while visiting Filterbuy
Customer Rating
5
Thankyou for your continued quality air filters
on March 18, 2026
Posted by: Anonymous
Thankyou for your continued quality filters.I will be back for more.
Written by a customer while visiting Filterbuy
Customer Rating
3
Last time I ordered from
on March 18, 2026
Posted by: Anonymous
Last time I ordered from you you sent me 15x20x4a and it fit perfectlyThat was not available on your website So I went with one and its a bit smaller in width So it barely fits on the rack but itll have to do for now
Written by a customer while visiting Filterbuy
Customer Rating
5
Filter
on March 17, 2026
Posted by: Anonymous
They were in 3 days. Great service. They fit perfectly.
Written by a customer while visiting Filterbuy
Customer Rating
5
Always Great
on March 17, 2026
Posted by: Anonymous
Filterbuy was recommended by our heat/air company to buy our replacement filters. Filterbuy did not disappoint! I just reordered again. Prompt service, great filters, and great price!
Written by a customer while visiting Filterbuy
Customer Rating
5
Ac filter
on March 17, 2026
Posted by: Wendy C.
I have ordered before. I have a service that checks my ac a couple of times a year. I like to have your filters ready for the air cleaner. Makes all the difference
Written by a customer while visiting Filterbuy
Customer Rating
5
Good
on March 17, 2026
Posted by: Anonymous
They are sturdy and durable, they catch the smallest pieces of dirt/dust.
Written by a customer while visiting Filterbuy