Customer reviews from Filterbuy
Filterbuy - 20x21x1 MERV 11 Pet & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (2-Pack) - Gold
Average customer rating
4.6
(3,950 Reviews)
Rating breakdown 3,950 reviews
5 Stars
3,136
4 Stars
393
3 Stars
198
2 Stars
89
1 Star
134
Customer Reviews for Filterbuy - 20x21x1 MERV 11 Pet & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (2-Pack) - Gold
Customer Rating
4
Filter is too small for my overhead Intake
on July 25, 2025
Posted by: Anonymous
I like the quality but actual size is 19. 3x23. 4x0. 75. The filter will not stay in place and goes up and down with the airflow inside the vent. Making noise. Second, when installing, it will not stay in place while closing the cover. Could we set up a chat to get to a solution? Maybe the 25"l filter would work, depending on "actual" size?Alla.
Written by a customer while visiting Filterbuy
Customer Rating
2
Crushed Filters
on July 25, 2025
Posted by: Anonymous
The company needs to learn to properly package its products. I purchased a pack of 6 small (10101) filters and two of them are crushed beyond use. That increases the cost by 33% and the inconvenience factor by 100%. I can't address the quality of an unusable product.
Written by a customer while visiting Filterbuy
Customer Rating
5
Great quality filters!
on July 25, 2025
Posted by: Anonymous
I have dogs and cats which means lots of hair and dust. Wanted a good quality filter and these are just that.
Written by a customer while visiting Filterbuy
Customer Rating
5
Great price
on July 24, 2025
Posted by: Anonymous
As expected. Wish it was actual size to make it a snugger fit, still love the price and made in America. Will continue to buy
Written by a customer while visiting Filterbuy
Customer Rating
5
Yes, the right tool for cleaning your air
on July 24, 2025
Posted by: Anonymous
I have used this product for years. The best way to stay healthy is to breathe fresh clean air.
Written by a customer while visiting Filterbuy
Customer Rating
5
The condition, installation and fit
on July 24, 2025
Posted by: Anonymous
The condition, installation and fit was perfect. Very pleased with the filters.
Written by a customer while visiting Filterbuy
Customer Rating
5
New FilterBuy product appears to be much stronger!
on July 20, 2025
Posted by: Anonymous
Pleats in newest filter appear to be much stronger and should perform better than those in the past. I won't have an opportunity to evaluate this until 1st Qtr 2026, since I still have ample inventory from my last FilterBuy.
Written by a customer while visiting Filterbuy
Customer Rating
5
We have used these filters
on July 18, 2025
Posted by: Hollis F.
We have used these filters for two years.We are pleased with them. They go in and out of the furnace easily. We will continue to use them.
Written by a customer while visiting Filterbuy