I DON'T BUY ANY OTHER FILTER. I HAVEN'T FOUND ANOTHER FILTER THAT WORKS AS WELL AS THIS ONE. SINCE I SUFFER FROM ALLERGIES, THIS FILTER MAKES IT EASIER TO TOLERATE IT. MY EYES DON'T ITCH ANYMORE.

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.

[This review was collected as part of a promotion.] We have been using this brand of for 14 years, it really works for my wife and daughters who have seasonal allergies. We trust Filtrete filters.

I love buying this product. It does everything it says it will. The air in my home is always fresh and clean. And no dust particles floating around. It is an excellent choice.

This filter was restrictive enough to cause my evaporator to start icing up. Should be labeled that a HVAC technician needs to adjust refrigerant charge or up the speed tap on blower motor.

My furnace technician usually has a less expensive filter to leave with me when visiting for my annual furnace check but when he sees I have a Filtrete Healthy Living Air Filter he says that is a much better filter and I should stick with it.

We have been using the Allergen Defense filter for over a year and I have noticed a dramatic reduction is the particals of dust in our house. That means less time I have to devote to dusting the floors and furniture.

I have used this air filter in my home and it noticeably reduces the amount of allergens. Also amazing how much it picks up when it is time to replace. A great product.

For the second time in a row, when the air flows to the air conditioning unit, this product literally falls apart. It separates from the flimsy cardboard border.

[This review was collected as part of a promotion.] I've been using these filters for several yrs and they are great. I originally bought them because my son has asthma.