Customer reviews from Filterbuy
Filterbuy - 9x30x1 MERV 13 Smoke & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (1-Pack) - Blue
Average customer rating
4.6
(3,404 Reviews)
Rating breakdown 3,404 reviews
5 Stars
2,702
4 Stars
301
3 Stars
184
2 Stars
73
1 Star
144
Customer Reviews for Filterbuy - 9x30x1 MERV 13 Smoke & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (1-Pack) - Blue
Customer Rating
5
Effective filters
on February 12, 2026
Posted by: Anonymous
I change the furnace filter once a month and you can see what gets caught. Without filter changes the heat exchanger and AC coil would get coated with dirt.
Written by a customer while visiting Filterbuy
Customer Rating
5
I have used these pleated
on February 12, 2026
Posted by: Anonymous
I have used these pleated filters for two years. No problem, good service.
Written by a customer while visiting Filterbuy
Customer Rating
5
Great product!
on February 12, 2026
Posted by: Anonymous
Love in windy west Texas. .Filter last longer better air quality is great!
Written by a customer while visiting Filterbuy
Customer Rating
5
Filters are good quality MADE IN USA
on February 11, 2026
Posted by: Anonymous
I have been using these filters for a while & another filter company were sending promos for their filters. So I did some more research into Filterbuy as a company. There are 2 reasons I went with Filterbuy, MADE IN USA & they produce filters in Pittsburgh PA. I live in Pittsburgh so you have to support local!!!
Written by a customer while visiting Filterbuy
Customer Rating
5
PERFECT!!
on February 10, 2026
Posted by: Anonymous
These filters fit perfect, function better than others in trapping pet hair and dust.
Written by a customer while visiting Filterbuy
Customer Rating
5
Referred others!
on February 10, 2026
Posted by: Anonymous
We go from heat to nothing to air conditioning in a matter of days here, so I won't go without knowing the air is being filtered. FilterBuy is my favorite!
Written by a customer while visiting Filterbuy
Customer Rating
1
Wrong size
on December 20, 2025
Posted by: Anonymous
Two orders in a row now Filterbuy has screwed up the size on a custom order. The stickers on them are the right size, but when measured they are significantly larger. Same mistake both times. As a result they do not fit. This used to be a good company. They've lost their way the last 2 yrs. Try somewhere else.
Written by a customer while visiting Filterbuy
Customer Rating
5
Breathing Easy
on November 13, 2025
Posted by: Anonymous
I love these filters. I have really bad allergies, 5 dogs and a cat. What a combo, but these filters really do help with air quality. Plus they are delivered right to my door.
Written by a customer while visiting Filterbuy