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
(7,006 Reviews)
Rating breakdown 7,006 reviews
5 Stars
5,173
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
Wow
on May 16, 2026
Posted by: Customer
Great filters and saved my self more than 75% on what I would have spent.
Written by a customer while visiting Filterbuy
Customer Rating
5
Filters for Future Use
on May 15, 2026
Posted by: Customer
Purchased filters from area store but wanted standby filters for eventual change. Will try your brand to compare to make sure my nose is not dripping all of the time in our house. Yours will be used in the next two three month round - then I can be able to tell if it was worth it!
Written by a customer while visiting Filterbuy
Customer Rating
5
The Air I Breathe
on May 14, 2026
Posted by: Customer
After installing the MERV 11 filter, the air I breathe in is like a crisp, clean wind dancing through the trees.
Written by a customer while visiting Filterbuy
Customer Rating
5
Affordable and perfect fit.
on May 14, 2026
Posted by: Customer
Perfect fit, light and clean, but most importantly, these filters are very affordable.
Written by a customer while visiting Filterbuy
Customer Rating
5
I have 2 cats in
on May 14, 2026
Posted by: Customer
I have 2 cats in a small house. These filters are very the best.
Written by a customer while visiting Filterbuy
Customer Rating
5
Refill standing order
on May 14, 2026
Posted by: Customer
I needed to replace the AC filter and the ease of getting the very same filter was a breeze!
*system remembers size, MERV. VERY pleased with the continued quality and promptness of Filter Buy. I'll be back!!
*system remembers size, MERV. VERY pleased with the continued quality and promptness of Filter Buy. I'll be back!!
Written by a customer while visiting Filterbuy
Customer Rating
5
Works great
on May 14, 2026
Posted by: Customer
You can tell the difference when you used them. Specially in Florida with all the pollen.
Written by a customer while visiting Filterbuy
Customer Rating
2
Not as snug as the OEM filter
on May 13, 2026
Posted by: Customer
This filter was about 1/4 inch shorter than the filter that came with the HVAC unit. I needed to pad the underside with strips of with cardboard, so that it would fit snugly up to the top of the slot, since air travels across the top.
Written by a customer while visiting Filterbuy