Customer reviews from Filterbuy
Filterbuy - 20x20x4 MERV 11 Pet & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (1-Pack) - Gold
Average customer rating
3.9
(128 Reviews)
Rating breakdown 128 reviews
5 Stars
69
4 Stars
15
3 Stars
15
2 Stars
17
1 Star
12
Customer Reviews for Filterbuy - 20x20x4 MERV 11 Pet & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (1-Pack) - Gold
Customer Rating
1
They dont fit there not20x20x4
on October 8, 2025
Posted by: Anonymous
Will never buy this product again stuck with stack of filters cant use
Written by a customer while visiting Filterbuy
Customer Rating
5
Vary good quality air filter
on September 28, 2025
Posted by: Val W.
Vary good quality air filter I am pleased with this filter
Written by a customer while visiting Filterbuy
Customer Rating
1
Look nice Do NOT Fit
on September 11, 2025
Posted by: Marion K.
The filters we purchased DO NOT FIT OUR FURNACE.We bought 20x20x4 as we have been doing for many years, but your 20x20x4 did not fit our machine.
Written by a customer while visiting Filterbuy
Customer Rating
5
Great choice!
on August 26, 2025
Posted by: Anonymous
This filter from Filter buy is much better than the skinny filter that I used to use!
Written by a customer while visiting Filterbuy
Customer Rating
2
Poor Fitment
on August 5, 2025
Posted by: Anonymous
Less pleats compared to other brands and is undersized compared to others. Will not purchase again.
Written by a customer while visiting Filterbuy
Customer Rating
1
Do not buy if you need Honeywell size filters
on July 31, 2025
Posted by: Hayes H.
I purchased eighteen of these filter because they are labelled "4 inch media filters". The actual size is 3-5/8" so they do not fit my Honeywell filter housing.
Written by a customer while visiting Filterbuy
Customer Rating
5
They were very good about
on July 9, 2025
Posted by: Anonymous
They were very good about taking back the wrong filters and got me the new filters quickly
Written by a customer while visiting Filterbuy
Customer Rating
5
Looks Well Made
on June 23, 2025
Posted by: Anonymous
Although we have not used them yet, they look very well made.
Written by a customer while visiting Filterbuy