Customer reviews from filtrete.com
Filtrete - Allergen Defense 20" x 25" x 1" Pleated Air Filter, MERV 11 (9803-4) - Red
Average customer rating
4.7 out of 5
4.7
(472 Reviews)
Open Ratings Snapshot
Rating breakdown 472 reviews
5 Stars
391
4 Stars
63
3 Stars
6
2 Stars
3
1 Star
9
96%of customers recommend this product. 
(
429 out of 446
)
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Customer Reviews for Filtrete - Allergen Defense 20" x 25" x 1" Pleated Air Filter, MERV 11 (9803-4) - Red
Customer Rating
5 out of 5
5
Great app
on August 2, 2019
Posted by: Kitnscooter
from Milwaukee
Gender:Female
[This review was collected as part of a promotion.] I’m so happy with the app that lets you know when it’s time to change filters and also the periodic rebates that are available
I would recommend this to a friend!
Written by a customer while visiting filtrete.com
Customer Rating
5 out of 5
5
Great
on August 7, 2019
Posted by: Gemma Gracie
from Spring Hill, TN
Gender:Male
[This review was collected as part of a promotion.] Bought the 20x20 and it’s been a great filter. Especially since we have two cats in the house.
I would recommend this to a friend!
Written by a customer while visiting filtrete.com
Customer Rating
4 out of 5
4
Good
on December 5, 2019
Posted by: Tree
from KCMO
Gender:Female
[This review was collected as part of a promotion.] I like the brand and the filter seems to work grest.
I would recommend this to a friend!
Written by a customer while visiting filtrete.com
Customer Rating
5 out of 5
5
Performs as advertised
on September 2, 2020
Posted by: kcHogWild
from Springdale, AR
Gender:Female
Bought this product due to a grandchild’s allergies. She does not sneeze or cough at my house.
I would recommend this to a friend!
Written by a customer while visiting filtrete.com
Customer Rating
5 out of 5
5
Awesome filter for allergens and dust
on November 10, 2020
Posted by: Tootie92
from Eufaula, AL
Gender:Female
Just love these filters. I use to use a different brand until my asthma and allergy clinic suggested these. Now this is all that I buy!
I would recommend this to a friend!
Written by a customer while visiting filtrete.com
Customer Rating
5 out of 5
5
Great value for the money!
on July 31, 2023
Posted by: Axlerod
This does exactly what is says it will do. With all the wildfire smoke, I was worried but this did a great job. The 1085 can not be beat for the price. I don't have severe allergies or asthma so I can't say how it does against those.
Written by a customer while visiting filtrete.com
Customer Rating
1 out of 5
1
DOES NOT FIT!
on September 4, 2018
Posted by: chris99
from socal
Gender:Male
The Allergen Defense 1000 14x30x1 does not fit the return air filter holder on my system. Other brands are tight, but they fit. 3M admits the filter is slightly larger, but gives no reason why, nor is it noted on the filter. NOT HAPPY!
No, I would not recommend this to a friend.
Response from filtrete.comBy FiltreteSocial CareSeptember 4, 2018
Hello. We are sorry to hear of the trouble. This filter's actual size should be slightly smaller than 14x30x1. This size actual should be printed on the filter frame. Please connect with our team directly if your filter was larger than 14x30x1, 1-800-388-3458 M-F 8am-5pm CT. Thank you.
Written by a customer while visiting filtrete.com
Customer Rating
1 out of 5
1
Marked Correctly?
on September 6, 2020
Posted by: Confused
from Charleston, SC
Gender:Male
I’ve bought many brands of ac filters for decades and never had the support webbing of the filter on the upstream side of the filter (according to air flow direction arrow). I don’t know whether to trust my decades worth of experience or trust the air flow direction arrow.
Response from filtrete.comBy Filtrete BrandSocial CareSeptember 8, 2020
Hello – Thank you for taking the time to leave your review. We are sorry to hear of the confusion. In the past we have used metal mesh supports on the downstream side of our filters. We have designed a new polypropylene support material for these filters which supports the filter material from the upstream side. Please install the filter according to the air flow arrows. If you have any additional questions or concerns, please connect with us directly at 1-800-388-3458 M-F 8am-5pm CT.
Written by a customer while visiting filtrete.com
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