Customer reviews from Filterbuy
Filterbuy - 18x21x1 MERV 11 Pet & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (6-Pack) - Gold
Average customer rating
4.6
(3,905 Reviews)
Rating breakdown 3,905 reviews
5 Stars
3,098
4 Stars
390
3 Stars
196
2 Stars
88
1 Star
133
Customer Reviews for Filterbuy - 18x21x1 MERV 11 Pet & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (6-Pack) - Gold
Customer Rating
4
Look like well made filters
on August 27, 2025
Posted by: Anonymous
Look like well made filters looking forward to using them. A couple were a little bent up, but still usable.
Written by a customer while visiting Filterbuy
Customer Rating
5
Merv 11 air filter
on August 27, 2025
Posted by: Amante N.
I have no complaints. Their air filters are highly recommended!
Written by a customer while visiting Filterbuy
Customer Rating
5
Great co to deal with.
on August 27, 2025
Posted by: paula y.
Great co to deal with. Any problems and they will make it right, immediately!
Written by a customer while visiting Filterbuy
Customer Rating
5
Exelent filter, high quality, and
on August 27, 2025
Posted by: E j.
Exelent filter, high quality, and perfect fit. Its a non standard size for a Carrier air handler 16 3/8 X 21 3/8
Written by a customer while visiting Filterbuy
Customer Rating
2
Quality is great but measurements
on August 26, 2025
Posted by: Anonymous
Quality is great but measurements and fit is not good
Written by a customer while visiting Filterbuy
Customer Rating
3
Overall size is not accurate
on August 26, 2025
Posted by: Anonymous
Filter quality is great but the size is not accurate should be half a millimeter smaller in all of the directions. Then you want to install that filter that doesn't matter which size you have to damage the filter to fit. I ordered 12 of them in two types six of each ivish I ordered just one
Written by a customer while visiting Filterbuy
Customer Rating
5
Excellent design, quality and cleaning.
on August 26, 2025
Posted by: Anne-Marie F.
Excellent design, quality and cleaning. Very affordable!
Written by a customer while visiting Filterbuy
Customer Rating
5
Great company
on August 26, 2025
Posted by: Anonymous
These measurements were custom made and they fit perfect. The size is now saved and I can keep ordering them as needed. I have used them for quite a few years.
Written by a customer while visiting Filterbuy