Customer reviews from Filterbuy
Filterbuy - 20x30x4 MERV 11 Pet & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (4-Pack) - Gold
Average customer rating
4
(1,144 Reviews)
Rating breakdown 1,144 reviews
5 Stars
660
4 Stars
148
3 Stars
119
2 Stars
91
1 Star
126
Customer Reviews for Filterbuy - 20x30x4 MERV 11 Pet & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (4-Pack) - Gold
Customer Rating
5
Home HVAC System
on March 6, 2026
Posted by: Anonymous
The filters provide excellent filtration and meet all stated performance data.
Written by a customer while visiting Filterbuy
Customer Rating
1
Returning filters is a nightmare
on March 6, 2026
Posted by: Anonymous
Incredibly expensive to ship back. Do not recommend. Buy your filters local when you can. Mistakes happen. Company is incredibly inflexible.
Written by a customer while visiting Filterbuy
Customer Rating
2
Sized like lumber
on March 5, 2026
Posted by: Anonymous
The sizes are asinine. Just make them the actual sizes like some of the other brands
Written by a customer while visiting Filterbuy
Customer Rating
4
16x20x4
on March 5, 2026
Posted by: Anonymous
filter is a loose fit in my heat pump, i expected them to fit like the Honeywell that the unit came with but your filters are somewhat smaller and the fit in the unit isnt as tight as with the more costly Honeywell. Im hoping the function is okay but one has to be careful to install the filter otherwise it slips out of position. not that impressed by your product, bought 4 so in a year I will re-evaluate your product to see if re-order or new supplier is better.
Written by a customer while visiting Filterbuy
Customer Rating
5
Excellent Company!
on March 5, 2026
Posted by: Anonymous
I can always count on FILTERBUY to deliver very prompt AC filters whenever I order them at a great price. I can highly recommend them. Their prices are also way better than their competitors.
Written by a customer while visiting Filterbuy
Customer Rating
5
Filters
on March 2, 2026
Posted by: Anonymous
I am a returning customer. I have always been pleased starting with ordering and receiving the filters. The filters are very good and do a great job.
Written by a customer while visiting Filterbuy
Customer Rating
5
Great value!
on March 2, 2026
Posted by: Anonymous
Have been purchasing from Filterbuy for the last several years. Will continue to do so.
Written by a customer while visiting Filterbuy
Customer Rating
4
It could fit a little
on March 2, 2026
Posted by: Beverly A.
It could fit a little tightr but fits better than any filter over the counter so am satisfied.
Written by a customer while visiting Filterbuy