Customer reviews from Filterbuy
Filterbuy - 21x23.5x1 MERV 11 Pet & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (2-Pack) - Gold
Average customer rating
4.6
(3,971 Reviews)
Rating breakdown 3,971 reviews
5 Stars
3,154
4 Stars
394
3 Stars
200
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 (2-Pack) - Gold
Customer Rating
5
Great filter
on July 5, 2026
Posted by: Customer
The filter is so solid. I previously bought this flimsy filter that bowed immediately and got sucked up into the HVAC unit. After that terrible experience, I had to find a better option. This filter is excellent—well constructed and filtering out inpurities.
Written by a customer while visiting Filterbuy
Customer Rating
5
They appear to be Great
on July 4, 2026
Posted by: Customer
They appear to be Great one, haven’t used any yet! Had just replaced
Written by a customer while visiting Filterbuy
Customer Rating
5
Another year of air filters.
on July 3, 2026
Posted by: Customer
Always great, mass discount for multiple orders and I always have them on hand.
Written by a customer while visiting Filterbuy
Customer Rating
5
Insuperables
on July 3, 2026
Posted by: Customer
Por mas de 5 años he comprado los filtros de mi aire acondicionado con filter Buy y fue mi mejor decisión, hoy puedo decir que mi equipo funciona tan bien gracias a eso maravillosos filtros
Written by a customer while visiting Filterbuy
Customer Rating
5
Great Filters
on July 3, 2026
Posted by: Customer
I have been buying these filters for some time now, and the company provides excellent products and services.
Written by a customer while visiting Filterbuy
Customer Rating
5
Always received as indicated. No
on July 3, 2026
Posted by: Customer
Always received as indicated. No issues. Have been using these filters for 3 plus years
Written by a customer while visiting Filterbuy
Customer Rating
5
Filters
on July 2, 2026
Posted by: Customer
The filters are great and really work well. On the automatic refills every 3 months they arrive on time with no problems no hassle.
Written by a customer while visiting Filterbuy
Customer Rating
5
I just bought them haven’t
on June 30, 2026
Posted by: Customer
I just bought them haven’t had time yet but I’m glad I could buy from your company
Written by a customer while visiting Filterbuy