Customer reviews from Filterbuy
Filterbuy - 18x21x1 MERV 13 Smoke & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (4-Pack) - Blue
Average customer rating
4.6
(3,366 Reviews)
Rating breakdown 3,366 reviews
5 Stars
2,670
4 Stars
300
3 Stars
182
2 Stars
73
1 Star
141
Customer Reviews for Filterbuy - 18x21x1 MERV 13 Smoke & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (4-Pack) - Blue
Customer Rating
5
All of the filters fit
on July 25, 2025
Posted by: Manuel V.
All of the filters fit and work perfectly. I actually heard about it from other people in my office who use this company as well.So far, Im quite pleased with the product and service. .
Written by a customer while visiting Filterbuy
Customer Rating
4
Good product but took longer
on July 25, 2025
Posted by: Anonymous
Good product but took longer to get them than posted on line
Written by a customer while visiting Filterbuy
Customer Rating
5
Top notch filters.
on July 24, 2025
Posted by: Anonymous
I have used them in the past and went to a cheaper brand for a short period. I have now returned and am pleased with the higher quality these filters have.
Written by a customer while visiting Filterbuy
Customer Rating
5
Good product.
on July 22, 2025
Posted by: denzil s.
This is a good product. The variety of sizes available is really great. Fasr service.
Written by a customer while visiting Filterbuy
Customer Rating
5
Lasts longer
on July 21, 2025
Posted by: Tami Q.
lasts longer than other filters. bought them specifically for dirt and sand as we live in the AZ desert and we get hit every year with sandstorms from the Cali sand dunes. Helps the pets with the seasonal allergies too. Grateful I do not have to climb the ladder a 12 times (x3) a year to change 3 filters out. Bought them for our shop too in 20x20s. Have to change 2 of them out there. I bought them for shop exhaust fumes and again dirt and sand.
Written by a customer while visiting Filterbuy
Customer Rating
5
Lasts longer
on July 21, 2025
Posted by: Tami Q.
These filters last longer than regular filters. I specifically bought them as we live in the desert and during monsoon season we get hit with sand from the Cali sand dunes. Helps the pets with their seasonal allergies too.
Written by a customer while visiting Filterbuy
Customer Rating
1
I don't recommend these filters
on July 20, 2025
Posted by: Marco N.
I don't recommend these filters or this company at all. . . don't buy here.
Written by a customer while visiting Filterbuy
Customer Rating
5
Great air filter
on July 20, 2025
Posted by: Anonymous
I have purchased these filters for a few years and enjoy the auto reorder . Great filter good price
Written by a customer while visiting Filterbuy