Customer reviews from Filterbuy
Filterbuy - 18x18x1 MERV 13 Smoke & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (6-Pack) - Blue
Average customer rating
4.4
(5,904 Reviews)
Rating breakdown 5,904 reviews
5 Stars
4,406
4 Stars
555
3 Stars
405
2 Stars
201
1 Star
337
Customer Reviews for Filterbuy - 18x18x1 MERV 13 Smoke & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (6-Pack) - Blue
Customer Rating
5
16x20 and 20x20
on March 13, 2026
Posted by: Anonymous
Hopefully they are working ss the allergens are really high here. They has just been in a couple of days.
Written by a customer while visiting Filterbuy
Customer Rating
5
New look
on March 13, 2026
Posted by: Anonymous
Liked the white look not so much for the blue color
Written by a customer while visiting Filterbuy
Customer Rating
5
What A Savings
on March 12, 2026
Posted by: Anonymous
The price is outta sight! I will not find out if the filters are worth it for another 3 months
Written by a customer while visiting Filterbuy
Customer Rating
5
Marked difference
on March 12, 2026
Posted by: Anonymous
I was using a different brand before and when I would replace that brand, there was no trapped dirt. With filterbuy, the filters are full after only three months. My air is much cleaner. They shipped overnight, which I appreciate because I forgot to put them on subscription. Great product. Great company.
Written by a customer while visiting Filterbuy
Customer Rating
5
Ty If I am on
on March 12, 2026
Posted by: Anonymous
Ty If I am on an auto refill, please stop. However, I need. 12 23. 5x 11. 5 filters. ASAP
Written by a customer while visiting Filterbuy
Customer Rating
3
Not Quite Right
on March 12, 2026
Posted by: Anonymous
So the ordering and delivery was super easy and convenient. There are two issues: 1) my 12x24x1 filters aren't quite right size wise. I am able to jam them in there with a little bend, but the filters I previously had popped right in no problem. 2) All the filters are blue, so they show through the vent grates, I didn't get a color option, but again previous ones were white and did not show at all
Written by a customer while visiting Filterbuy
Customer Rating
5
Last twice as long
on March 11, 2026
Posted by: Anonymous
They last twice as long then all the other brands, especially the ones that change colors.
Written by a customer while visiting Filterbuy
Customer Rating
3
Not used long enough to review.
on March 10, 2026
Posted by: Anonymous
I gave one review. Have not mad filters long enough to give review.
Written by a customer while visiting Filterbuy