Customer reviews from Filterbuy
Filterbuy - 21x27x5 MERV 11 Pet & Allergy Defense, Pleated HVAC AC Furnace Air Filters Replacement for Trane & More (2-Pack) - Gold
Average customer rating
4.4
(1,367 Reviews)
Rating breakdown 1,367 reviews
5 Stars
988
4 Stars
148
3 Stars
81
2 Stars
47
1 Star
103
Customer Reviews for Filterbuy - 21x27x5 MERV 11 Pet & Allergy Defense, Pleated HVAC AC Furnace Air Filters Replacement for Trane & More (2-Pack) - Gold
Customer Rating
5
Filters
on September 16, 2025
Posted by: Anonymous
They look to be good Filters, haven't used them yet so don't know for sure.
Written by a customer while visiting Filterbuy
Customer Rating
5
Quality of the filters
on September 13, 2025
Posted by: Anonymous
Had to buy a new HVAC system that came with one of the filters so I bought 3 more. Wife has asthma and we believe the foliage helped her breathing. So, I bought 3 more.
Written by a customer while visiting Filterbuy
Customer Rating
2
You keep changing the sizes
on September 12, 2025
Posted by: Anonymous
You keep changing the sizes by little amounts. These didnt fit well. SO FRUSTRATING. I had to jam it in and am sure will need to rip it apart to get it out
Written by a customer while visiting Filterbuy
Customer Rating
5
Excellent personal fixed my problem
on September 9, 2025
Posted by: Anonymous
Excellent personal fixed my problem when I ordered more filters than I needed.
Written by a customer while visiting Filterbuy
Customer Rating
5
Good filters for a fair price
on September 4, 2025
Posted by: Anonymous
Ive been using Filterbuy air filters in my Lenox A/C unit for several years. They fit well and are effective. I had once tried Filtrete filters from 3M but they had a foam strip that made them very difficult to install and remove. After using one I learned that its best to cut/trim this foam strip before installing but Ill never buy them again, lesson learned!
Written by a customer while visiting Filterbuy
Customer Rating
5
Finally
on August 31, 2025
Posted by: Anonymous
I finally found a filter that fits my unit perfectly. Thank you for posting the exact measurements. I will be a regular buyer.
Written by a customer while visiting Filterbuy
Customer Rating
3
Sizing not the same as other filters
on August 31, 2025
Posted by: Shelby O.
The filters are a great price however they were not the same size as my current filters. I was able to get the filter in my furnace but it was pretty tough. Worried about getting it back out!
Written by a customer while visiting Filterbuy
Customer Rating
5
What I Think
on August 29, 2025
Posted by: Anonymous
I think Filterbuy provides very good service and good products at competitive prices. That being said, I also think the filter supply industry as a whole way over charges for a product that is essentially paper and a bit of wire.
Written by a customer while visiting Filterbuy