Customer reviews from Filterbuy
Filterbuy - 21x27x1 MERV 13 Smoke & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (2-Pack) - Blue
Average customer rating
4.6
(3,423 Reviews)
Rating breakdown 3,423 reviews
5 Stars
2,717
4 Stars
302
3 Stars
185
2 Stars
73
1 Star
146
Customer Reviews for Filterbuy - 21x27x1 MERV 13 Smoke & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (2-Pack) - Blue
Customer Rating
5
Perfect size for hard to fit vents.
on April 18, 2026
Posted by: Customer
We love this filter, but now have two more boxes sitting in our hall closet. They work well and the perfect size. Had to stop automatic delivery, but we will order them again. Sandy
Written by a customer while visiting Filterbuy
Customer Rating
4
They work really well.
on April 17, 2026
Posted by: Customer
We have allergies really bad and depend on our air conditioner to help with that. We got ducts cleaned and duct work nlo
Written by a customer while visiting Filterbuy
Customer Rating
1
Like them so far
on April 16, 2026
Posted by: Customer
I think they will trap a lot of dust and debris. .
Written by a customer while visiting Filterbuy
Customer Rating
5
Perfect fit and my home
on April 16, 2026
Posted by: Customer
Perfect fit and my home stays pretty dust free even when I don't run the air purifiers.
Written by a customer while visiting Filterbuy
Customer Rating
3
I cannot give an adequate
on April 15, 2026
Posted by: Customer
I cannot give an adequate review because I have not used them since the purchase. I will be using them once the previous filter is done.
Written by a customer while visiting Filterbuy
Customer Rating
5
Great filters
on April 12, 2026
Posted by: Customer
I wouldn’t buy filters from any other place. Quality of product is excellent. I have bad allergies and these filters keep my air exceptionally clean. Not 1 asthma attack last year! Thank you filterbuy
Written by a customer while visiting Filterbuy
Customer Rating
4
Whoever made a decision to
on April 11, 2026
Posted by: Customer
Whoever made a decision to change the filter from white to blue is on santas naughty book. Hate that I cannot easily see if the filter is dirty.
Written by a customer while visiting Filterbuy
Customer Rating
5
16 x 20 x 1 merv13
on April 11, 2026
Posted by: Customer
Very satisfied with these air filters. Best of all, great prices.
Written by a customer while visiting Filterbuy