Customer reviews from Filterbuy
Filterbuy - 15x20x4 MERV 13 Smoke & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (5-Pack) - Blue
Average customer rating
4.4
(5,900 Reviews)
Rating breakdown 5,900 reviews
5 Stars
4,402
4 Stars
555
3 Stars
405
2 Stars
201
1 Star
337
Customer Reviews for Filterbuy - 15x20x4 MERV 13 Smoke & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (5-Pack) - Blue
Customer Rating
3
Missed it by that much
on July 13, 2026
Posted by: Customer
The filter quality is fine, but my opening is apparently the full 20x24 and my filters didn't quite cover the opening.
Written by a customer while visiting Filterbuy
Customer Rating
5
been using your filters in
on July 13, 2026
Posted by: Customer
been using your filters in my Trion Air Bear filter system for over 20 years. very satisfied. Keeps my home and air very very clean. Helps with allergies also.
Written by a customer while visiting Filterbuy
Customer Rating
3
The filters I bought seem
on July 13, 2026
Posted by: Customer
The filters I bought seem smaller fit than the original 3M filters. I am now stuck with a few from you.
Written by a customer while visiting Filterbuy
Customer Rating
5
Awesome Filters. I've put them
on July 12, 2026
Posted by: Customer
Awesome Filters. I've put them in place to see how they will help with the filtering of the air in my home.
Written by a customer while visiting Filterbuy
Customer Rating
5
Looks good
on July 12, 2026
Posted by: Customer
Haven't need a new one yet.
I'm expecting the same quality as the expensive ones.
I'm expecting the same quality as the expensive ones.
Written by a customer while visiting Filterbuy
Customer Rating
1
Too tight for my ac,
on July 11, 2026
Posted by: Customer
Too tight for my ac, which I didn’t know. They give no indication that you have to chose based on the ac unit in the description in the product page. I now k ow you have to go and dig for the link where it’s discussed.
Written by a customer while visiting Filterbuy
Customer Rating
5
Furnace filter , merv 13
on July 10, 2026
Posted by: Customer
These filters are rated very high and are cost efficient when buying several at a time .
Written by a customer while visiting Filterbuy
Customer Rating
5
Merv 13 - The Best!
on July 9, 2026
Posted by: Customer
Excellent high quality Air filter. These work perfect for a 2700 sq. ft. home. They filter the air very well.
Written by a customer while visiting Filterbuy