Customer reviews from Filterbuy
Filterbuy - 18x25x4 MERV 8 Dust & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (1-Pack) - Silver
Average customer rating
4.2
(989 Reviews)
Rating breakdown 989 reviews
5 Stars
662
4 Stars
101
3 Stars
77
2 Stars
68
1 Star
81
Customer Reviews for Filterbuy - 18x25x4 MERV 8 Dust & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (1-Pack) - Silver
Customer Rating
5
I havent received it
on October 29, 2026
Posted by: Customer
Invisible, And very light. Doesn’t block any particles.
Written by a customer while visiting Filterbuy
Customer Rating
2
pore construction and reduced size.
on October 29, 2026
Posted by: Customer
the filters elements inside the frame are loose and dont cover the space properly. and the frame is 1/4" smaller all around. the filter fits too loose and allows air to go around it. Bad way to save money.
Written by a customer while visiting Filterbuy
Customer Rating
5
Filters for furnace
on October 28, 2026
Posted by: Customer
I will be buying made in Canada filters from now on
Written by a customer while visiting Filterbuy
Customer Rating
5
Custom filters
on October 28, 2026
Posted by: Customer
I ordered a custom 12x16x4 as I had to replace them in my electric filter spot. It fit in perfect
Written by a customer while visiting Filterbuy
Customer Rating
5
I am now good for 3 years
on October 25, 2026
Posted by: Customer
Somehow my anual 4 filter order ended up with 3 transactions so I am good for 3 years. Luckily I have space for them.
Written by a customer while visiting Filterbuy
Customer Rating
5
Great filters
on October 25, 2026
Posted by: Customer
Found exactly what I needed for my furnace. Can't find these in a regular home improvement store. Just bought my home and needed new filters and this was in it and I got the information off the old filter and looked this site up and found my replacement very easily. Recommend this site and very fast shipping also.
Written by a customer while visiting Filterbuy
Customer Rating
4
1st time using this large
on October 23, 2026
Posted by: Customer
1st time using this large filter so will be better to wait for real review
Written by a customer while visiting Filterbuy
Customer Rating
1
Very disappointed
on October 23, 2026
Posted by: Customer
Your filters were substantially inferior to the filters that I had previously used. I am so disappointed and will never buy them again. I wish I had not purchased in bulk. 😢
Written by a customer while visiting Filterbuy