Customer reviews from Filterbuy
Filterbuy - 20x20x4 MERV 11 Pet & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (6-Pack) - Gold
Average customer rating
4.4
(7,000 Reviews)
Rating breakdown 7,000 reviews
5 Stars
5,168
4 Stars
754
3 Stars
438
2 Stars
245
1 Star
395
Customer Reviews for Filterbuy - 20x20x4 MERV 11 Pet & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (6-Pack) - Gold
Customer Rating
4
Thinking about furnace filters?
on May 29, 2026
Posted by: Customer
I don’t actually give much thought to furnace filters. I buy the size and the MERV the HVAC guy tells me to, and I don’t seem to have any air filtration problems, so I assume they’re working.
Written by a customer while visiting Filterbuy
Customer Rating
5
Great Purchase
on May 29, 2026
Posted by: Customer
I am very pleased with the product that I purchased from you all. Worth every cent.
Written by a customer while visiting Filterbuy
Customer Rating
1
I have not installed the
on May 28, 2026
Posted by: Customer
I have not installed the filter at this time. I'm guessing it may take a month to test
Written by a customer while visiting Filterbuy
Customer Rating
5
The filters seem to be
on May 28, 2026
Posted by: Customer
The filters seem to be good. I really enjoy that, but I need to change the deliveries. I am sitting on top of five filters now.
Written by a customer while visiting Filterbuy
Customer Rating
5
Excellent Quality
on May 28, 2026
Posted by: Customer
I have been ordering these filters since our house was built (20 months). Very pleased and will continue to order.
Written by a customer while visiting Filterbuy
Customer Rating
5
Great buy!!!
on May 27, 2026
Posted by: Customer
Cannot beat the cost of these filters. . . and they DO THE JOB!
Written by a customer while visiting Filterbuy
Customer Rating
5
Excellent Filters
on May 27, 2026
Posted by: Customer
Work great. Change quarterly and have checked before first use each year, Techs say systems are very clean.
Written by a customer while visiting Filterbuy
Customer Rating
5
Excellent Filters
on May 27, 2026
Posted by: Customer
Filters are delivered automatically once a year. We change them at the start of each quarter of the year. We have our heat and air checked before using them. Techs tell us they are very clean and should last for a while. Great news for 20:year old systems. They say the filters really help.
Written by a customer while visiting Filterbuy