Customer reviews from Filterbuy
Filterbuy - 13x21.5x1 MERV 11 Pet & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (4-Pack) - Gold
Average customer rating
4.4
(7,007 Reviews)
Rating breakdown 7,007 reviews
5 Stars
5,174
4 Stars
754
3 Stars
439
2 Stars
245
1 Star
395
Customer Reviews for Filterbuy - 13x21.5x1 MERV 11 Pet & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (4-Pack) - Gold
Customer Rating
5
Glad I found them
on April 18, 2026
Posted by: Customer
I ordered the. 20x23x1. I have a hard time m e finding them my size is not easy to find. The price was reasonable. Thank you
Written by a customer while visiting Filterbuy
Customer Rating
5
Great Filters
on April 18, 2026
Posted by: Customer
Great site to order from,easy to navigate. The products are explained well. Great filters
Written by a customer while visiting Filterbuy
Customer Rating
5
It is the perfect size
on April 17, 2026
Posted by: Customer
It is the perfect size - the only size available for my heating system.
Written by a customer while visiting Filterbuy
Customer Rating
5
Air Filter 20x23x1
on April 17, 2026
Posted by: Customer
This was a hard size to find and appreciate the price and quality of these filters. I don’t have to cut a slightly bigger filter anymore!! Thank You
Written by a customer while visiting Filterbuy
Customer Rating
5
Nothing to say really. Its
on April 16, 2026
Posted by: Customer
Nothing to say really. Its filters and they work as intended
Written by a customer while visiting Filterbuy
Customer Rating
4
Filters are fine but difficulty
on April 15, 2026
Posted by: Customer
Filters are fine but difficulty in getting the discount that was due me so I OVERPAID on their website
Written by a customer while visiting Filterbuy
Customer Rating
5
This fits my furnace perfectly
on April 14, 2026
Posted by: Customer
This fits my furnace perfectly and it came to me very fast!
Written by a customer while visiting Filterbuy
Customer Rating
5
Filter quality
on April 14, 2026
Posted by: Customer
As far as I know the filters are working fine. My orders always come on time.
Written by a customer while visiting Filterbuy