Customer reviews from Filterbuy
Filterbuy - 18x20x4 MERV 13 Smoke & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (5-Pack) - Blue
Average customer rating
4.1
(1,141 Reviews)
Rating breakdown 1,141 reviews
5 Stars
705
4 Stars
109
3 Stars
127
2 Stars
86
1 Star
114
Customer Reviews for Filterbuy - 18x20x4 MERV 13 Smoke & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (5-Pack) - Blue
Customer Rating
1
Filters
on March 10, 2026
Posted by: Anonymous
Please stop sending me filters please I didn't sigh up for all these filters, I have enough. PLEASE DON'T SEND ANY MORE FILTERS, I ONLY USE 2 FILTERTS PER YEAR.CORDELL KENNEDY
Written by a customer while visiting Filterbuy
Customer Rating
3
Size is not appropriate
on March 5, 2026
Posted by: Anonymous
Ordered 20x25x4 for aprilair system and the size of filter is off by 2inches. It would be better if filter buy has a exact measurements
Written by a customer while visiting Filterbuy
Customer Rating
5
Great Service Corrected a mistake
on March 4, 2026
Posted by: Anonymous
Great Service Corrected a mistake I made Good to go every 6 months
Written by a customer while visiting Filterbuy
Customer Rating
5
Merv Filters
on March 2, 2026
Posted by: Anonymous
I have used Merv filters for several years now and have been very pleased with their performance. I will continue to order them in the future.
Written by a customer while visiting Filterbuy
Customer Rating
5
Haven't put them in yet
on February 28, 2026
Posted by: Anonymous
Haven't put them in yet because not due to change.
Written by a customer while visiting Filterbuy
Customer Rating
5
Just what I needed
on February 27, 2026
Posted by: Anonymous
They were just what I needed, and they came quickly at a reasonable price. We'll do again.
Written by a customer while visiting Filterbuy
Customer Rating
5
I love it
on February 27, 2026
Posted by: Anonymous
The filter fits perfectly fine. So far I dont see dust up in my room
Written by a customer while visiting Filterbuy
Customer Rating
1
I need to return them.
on February 25, 2026
Posted by: Anonymous
I need to return them. They do not fit, even though the measurement seemed to be correct.
Written by a customer while visiting Filterbuy