Customer reviews from Filterbuy
Filterbuy - 21x21x1 MERV 8 Dust & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (4-Pack) - Silver
Average customer rating
4.7
(5,911 Reviews)
Rating breakdown 5,911 reviews
5 Stars
4,904
4 Stars
499
3 Stars
213
2 Stars
113
1 Star
182
Customer Reviews for Filterbuy - 21x21x1 MERV 8 Dust & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (4-Pack) - Silver
Customer Rating
2
Not large enough
on June 12, 2025
Posted by: Anonymous
While I always try for and appreciate US made products I will have to look elsewhere for my next ac filters. All the previous filters I have used for the 35 years Ive owned this house are only 1/4 inch smaller than the displayed dimensions on the filter. With your 1/2 inch smaller than displayed dimensions your filter allowed a corner and 2 sides to bypass the mounting flange and the filter to start entering the return air duct. Wish you the best but I will have to take my business elsewhere. Richard Bunnell
Written by a customer while visiting Filterbuy
Customer Rating
5
Excellent
on June 12, 2025
Posted by: Anonymous
The filters are fabulous!!! So much better than the store ones and at a great price!
Written by a customer while visiting Filterbuy
Customer Rating
5
30x12x1 filter
on June 12, 2025
Posted by: Anonymous
The size was difficult to find locally at hardware stores. Filterbuy had what I needed. Perfect.
Written by a customer while visiting Filterbuy
Customer Rating
5
Fit perfect and the hvac
on June 11, 2025
Posted by: Anonymous
Fit perfect and the hvac system runs good with no rattling.
Written by a customer while visiting Filterbuy
Customer Rating
5
The best
on June 10, 2025
Posted by: Anonymous
I have used filterbuty four years. They make a quality filter at an affordable price. Their delivery time is like the speed of light. It is the only place I buy my AC filters. Thank you so much for the great service.
Written by a customer while visiting Filterbuy
Customer Rating
5
Filters fit and work great.
on June 10, 2025
Posted by: Anonymous
Filters fit and work great. Convenient and easy way to purchase filters.
Written by a customer while visiting Filterbuy
Customer Rating
5
air filter
on June 9, 2025
Posted by: Anonymous
3rd time was the charm, fits perfectly as it should. thanks
Written by a customer while visiting Filterbuy
Customer Rating
5
Great Quality, Reliable Performance!
on June 9, 2025
Posted by: Anonymous
Ive been using the Filterbuy 20x20x1 MERV 8 Pleated Air Filters for a while now and couldnt be happier. The build quality is excellentsturdy frame, no bending or warping when installing. These filters catch dust, pollen, and pet dander really well, and I noticed a big difference in overall air freshness throughout my home.They hold up for the full 3-month cycle without noticeably reducing airflow from the HVAC system, which is a big plus. I also appreciate that theyre made in the USA and arrive well-packaged and in perfect condition.If youre looking for a dependable, budget-friendly air filter that keeps your business air clean and your system running smoothly, Filterbuys MERV 8 is a great choice. Highly recommend!
Written by a customer while visiting Filterbuy