Customer reviews from Filterbuy
Filterbuy - 21x23.5x1 MERV 11 Pet & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (3-Pack) - Gold
Average customer rating
4.6
(3,949 Reviews)
Rating breakdown 3,949 reviews
5 Stars
3,135
4 Stars
393
3 Stars
198
2 Stars
89
1 Star
134
Customer Reviews for Filterbuy - 21x23.5x1 MERV 11 Pet & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (3-Pack) - Gold
Customer Rating
3
MERV 11 PLEATED FILTERS
on March 6, 2026
Posted by: Anonymous
I've been told these filters are only good for about 30 days by my HVAC company.
Written by a customer while visiting Filterbuy
Customer Rating
5
So glad I ordered these
on March 5, 2026
Posted by: Anonymous
So glad I ordered these filters. They work great. Would recommend them for homes, condos and apartments.
Written by a customer while visiting Filterbuy
Customer Rating
5
I am never without Quality Filters
on March 5, 2026
Posted by: Anonymous
My filters are replaced once every three months. I buy 4 at a time. I get a new set every year just before I pull the last filter from the furnace. It is practically automated.
Written by a customer while visiting Filterbuy
Customer Rating
5
These are perfect. . . . and affordable!
on March 5, 2026
Posted by: Anonymous
Like the title says, these air filters are working perfectly, plus they are more affordable than anywhere else. I'm so glad I found FilterBuy. They also ship super quickly.
Written by a customer while visiting Filterbuy
Customer Rating
5
The filters are fine. I
on March 4, 2026
Posted by: Anonymous
The filters are fine. I purchased one years worth. Ill be ordering more early next year.
Written by a customer while visiting Filterbuy
Customer Rating
5
I've been using these filters
on March 4, 2026
Posted by: Anonymous
I've been using these filters for years and they are great. They do the job and fit nicely.
Written by a customer while visiting Filterbuy
Customer Rating
5
Filters
on March 4, 2026
Posted by: Anonymous
Love that I have on hand and I change every month even though it does not look like I need too. Thank you
Written by a customer while visiting Filterbuy
Customer Rating
5
Great filters
on March 4, 2026
Posted by: Anonymous
Can't find these filters at any store. Grateful to have filterbuy
Written by a customer while visiting Filterbuy