Since I started using this filter, I stopped getting sinus infections and suffer less from allergies! Great product. You can feel the effects of putting in a new air filter immediately.

We have used these over the past four years. Have allergies and noticed the difference once we started using filtrate. Just wish they sold them in a 6 pkg. We bought the 20x30x1.

I change our filters quite often due to dust and allergens that get circulated in our home. I find out filters last 2 months but I change them after 1 month. I’m going to the highest level filter shortly.

My wife deals with asthma on a daily basis, and we have found Filtrete products to be invaluable in helping keep our household air free of allergens. "THANKS"

[This review was collected as part of a promotion.] Very effective at removing odors and smoke. Using with the Filtrete air freshener leaves a wonderful smell.

[This review was collected as part of a promotion.] My husband bought another brand last time and is there ever a difference in performance. Not even close. Back to Filtrete Purple!

[Employee of 3m-filtrete] I am fairly diligent in changing the air filter in pur home. The amount of dust that is filtered out of the air is amazing. Thanks for this great product.

This Filtrete filter was recommended by my hvac installer and it’s worked great for me. I tried a cheaper brand and my allergies seemed to be noticeably worse. I only with they made the 20X25X4 in the smart option.

I have been using Filtrete for years & switched to this filter because I have seasonal allergies. The difference is notable. Wonderful filter! Can't say enough about Filtrete quality.

I have asthma and since I discovered Filtrete filters I use them exclusively because they help me keep my asthma under control by removing allergens from the air that enters my home.