Customer reviews from Filterbuy
Filterbuy - 21x21x4 MERV 11 Pet & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (12-Pack) - Gold
Average customer rating
4
(1,144 Reviews)
Rating breakdown 1,144 reviews
5 Stars
660
4 Stars
148
3 Stars
119
2 Stars
91
1 Star
126
Customer Reviews for Filterbuy - 21x21x4 MERV 11 Pet & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (12-Pack) - Gold
Customer Rating
5
GREAT
on October 21, 2019
Posted by: Anonymous
They seem to fit a little tighter than my previous filters, but that turns out to be my benefit; in the unorthodox way I'm using them. Using a thicker filter allows me to step-up the MERV rating without taxing the air-handler, so I was quite pleased that they would hold themselves in place without any modification to the filter holder that was meant to hold a 1" thick filter.
Written by a customer while visiting Filterbuy
Customer Rating
2
They werent 20 x 20
on October 2, 2019
Posted by: Anonymous
They werent 20 x 20 x 4 as advertised. Fit loose. Not satisfied.
Written by a customer while visiting Filterbuy
Customer Rating
5
Great Filter
on August 28, 2019
Posted by: Anonymous
These fit perfect in my unit. Was recommended by my repair company. Was a great price when purchasing a years supply.
Written by a customer while visiting Filterbuy
Customer Rating
3
Foam filler strips should be
on August 25, 2019
Posted by: Gerard B.
Foam filler strips should be on side of filterFit proper air filtration.6
Written by a customer while visiting Filterbuy
Customer Rating
5
Convient & Timely
on August 23, 2019
Posted by: Anonymous
The filters are the exact size needed, high quality and with the subscription arrive just before the scheduled furnace checkup.
Written by a customer while visiting Filterbuy
Customer Rating
5
Perfect!
on August 21, 2019
Posted by: Anonymous
Exactly as described and fit our unit perfectly! Will definitely order again!
Written by a customer while visiting Filterbuy
Customer Rating
5
More bang for your buck
on July 30, 2019
Posted by: NATICA R.
We'd just purchased our new house and it was time to change the filter for the first time. Didn't realize how expensive they are compared to other filter types and sizes. To purchase 2 filter for less than the cost of a single filter is at the big box hardware stores will keep me happy happy happy and I save more because of the subscription program which also helps.
Written by a customer while visiting Filterbuy
Customer Rating
5
well done
on July 17, 2019
Posted by: Anonymous
I recently ordered an incorrect filter size. FilterBuy fixed my problem quickly. Thank you, I will use your company for all my filter orders in the future.
Written by a customer while visiting Filterbuy