Customer reviews from Filterbuy
Filterbuy - 20x20x4 MERV 8 Dust & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (6-Pack) - Silver
Average customer rating
4.6
(7,982 Reviews)
Rating breakdown 7,982 reviews
5 Stars
6,413
4 Stars
704
3 Stars
347
2 Stars
212
1 Star
306
Customer Reviews for Filterbuy - 20x20x4 MERV 8 Dust & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (6-Pack) - Silver
Customer Rating
5
Best service for filters
on February 8, 2026
Posted by: Anonymous
They are priced right and shipped fast. Best place to get filters to help keep your HVAC working properly. My HVAC tech told me about you guys, and he was right!
Written by a customer while visiting Filterbuy
Customer Rating
5
Filter fits perfect!
on February 7, 2026
Posted by: Anonymous
Service was outstanding :star::star::star::star::star:
Written by a customer while visiting Filterbuy
Customer Rating
5
Furnace Filter
on February 7, 2026
Posted by: Anonymous
These filters seem to do the job. House ducts are clean which to me means the filters work.
Written by a customer while visiting Filterbuy
Customer Rating
5
A most economic alternative
on February 7, 2026
Posted by: Anonymous
A cost effective way to replace your furnace filter monthly reducing blower workload and maximizing air filtration. You basically can't go wrong.
Written by a customer while visiting Filterbuy
Customer Rating
5
I was very pleased with
on February 6, 2026
Posted by: Anonymous
I was very pleased with the promptness and product.
Written by a customer while visiting Filterbuy
Customer Rating
1
The filters you sent are
on February 6, 2026
Posted by: Anonymous
The filters you sent are clearly lower quality than the ones I typically use. Thin, fewer heavy duty folds etc. Really cheap product and I was hopeful you could be my ongoing supplier rather than a one time fix. Too bad!
Written by a customer while visiting Filterbuy
Customer Rating
5
True to size, very happy
on February 6, 2026
Posted by: Anonymous
True to size, very happy with your product. I will definitely buy again. Thank you
Written by a customer while visiting Filterbuy
Customer Rating
1
Filters dont fit snuggly
on October 15, 2025
Posted by: Anonymous
The filters are off size a little so they dont fit snuggly. They fall and lay on the grate and get sucked back up when air comes on. I have 9 left. I request a replacement order. I can send the others back at your expense for your review. I am afraid to reorder again. Dont want the same problem twice
Written by a customer while visiting Filterbuy