Customer reviews from Filterbuy
Filterbuy - 21.5x21.5x1 MERV 11 Pet & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (3-Pack) - Gold
Average customer rating
4.6
(3,948 Reviews)
Rating breakdown 3,948 reviews
5 Stars
3,134
4 Stars
393
3 Stars
198
2 Stars
89
1 Star
134
Customer Reviews for Filterbuy - 21.5x21.5x1 MERV 11 Pet & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (3-Pack) - Gold
Customer Rating
5
GREAT
on September 14, 2026
Posted by: Customer
The Air in the house was cleaner within minutes of running the HVAC
Written by a customer while visiting Filterbuy
Customer Rating
5
Quality filters. Don't have to
on September 14, 2026
Posted by: Customer
Quality filters. Don't have to run around trying to find the right size every few months.
Written by a customer while visiting Filterbuy
Customer Rating
5
Merv 11
on September 13, 2026
Posted by: Customer
The Merv 11 filters are a great filter and you can't beat the price! Theses filters keep my dust down in the house.
Written by a customer while visiting Filterbuy
Customer Rating
5
Filter Buying
on September 13, 2026
Posted by: Customer
Convenient way to shop for filters. They work well. High quality.
Written by a customer while visiting Filterbuy
Customer Rating
5
To early to tell
on September 12, 2026
Posted by: Customer
Just received the filters. Best part is they actually fit properly. My 20x30 opening was 19 7/8”x 29 7/8”. Sam’s filters were actual size and had to be bent to fit, which damaged the sealing edge. My 3 ton unit really moves some air and bows the filter pretty good. But, time will tell. Bought the six pack to start with. We’ll see in 6 months if I buy again.
Written by a customer while visiting Filterbuy
Customer Rating
1
Filter does not fit
on September 10, 2026
Posted by: Customer
This was a custom filter and the size of the old one was 24c24 x1. The new ones I received was not correct it should have been 24x20x1. Now I have these filters that are. It even 24 wide that does not enter the opening of the air handler. I order for my other home and never had any issues but not sure why for my mom’s house this is an issue. I hope maybe we could get them replace.
Written by a customer while visiting Filterbuy
Customer Rating
5
Good service from FILTERBUY and
on September 10, 2026
Posted by: Customer
Good service from FILTERBUY and the filters are good one
Written by a customer while visiting Filterbuy
Customer Rating
5
16x25x1
on September 9, 2026
Posted by: Customer
Best decision I've ever made was to switch to thos company for my HVAC filters. Repeat customer here
Written by a customer while visiting Filterbuy