We have purchased a new home in Washougal, Washington. The home inspection revealed very dirty filters in each of two furnaces. We have specified Filtrete furnace filters to replace the very dirty generic filters as part of the purchase agreement because we have used them exclusively in our current home for about seven years. They seem to help with our allergies! 3M makes great products including your Blue masking tape and air filtration face masks which we have used when mowing the lawn!

I have been using Filtrete Filters since mid-'80s. I have upgraded with each introduction of an improved version and found they actually DO last 3 months. These filters keep out dust, dander and pollen. At present, I have 2 dogs & 1 cat in the house. My whole house smells fresh for 3 glorious months. They are not as cheap as Brand X, but very worth every penny; considering all they accomplish.

I've been installing this filter in our furnace since it became available. It not only produced a cleaner home interior (our house was built in 1913) but also keeps the motor/fan and its enclosure cleaner thereby saving major and expensive mechanical furnace repairs/replacements!

[This review was collected as part of a promotion.] I just replaced my furnace this last month and decided to go with the new upgraded system that included a 4" filter. Due to where I live and having open fields by my home my filter gets dirty very quickly with the wider filter I do not have to change the filter as often as the smaller one.

Bought this yesterday, installed today, it is about a 1/2 inch bigger than the filter it is replacing. Had to force it in the inlet opening, have always had to change my filters every 2 months, I hope this will last longer. and this is just a 2 year old house, and we had the furnace vents cleaned out earlier this year. I am impressed with the fact that the filter uses cotton versus paper as it filtration media.

I have been using Filtrete filters to reduce the allergens in the air for the past 5 years. They have significantly reduced the particles in the air that had been causing my wife to have various allergic reactions, including coughing, watering and itching eyes and general difficulty breathing. I certainly will be continuing to use them from now on!

I live in Michigan and my 2 furnaces run constantly. It is extremely important to me that my family breathes clean, dust/allergen free air. Plus, it makes house cleaning so much easier. The filters are high quality, easy to use and I only have to change them once a year. I wouldn't buy any other brand. Filtrete whole house filters work!

We've been using The Filtrete Allergen Reduction filter #12 for about 6 months now and it does seem to be helping us with our allergies by cutting the amt. of allergens in the house. The Filter also fits perfectly so there is no noise from an ill fitting filter...we've had this problem in the past, but not at all with Filtrete. The dimensions are exactly what they state. Excellent filter. High recommend it.

I am happy with the performance of this filter. However although it slides into the box easily, it is hard to remove. It would be nice to have cutouts in the cardboard for finger holds. It is also hard to remove; it is almost as if it expands. I am afraid I will damage the wires in my furnace as I remove it. It comes out in a few pieces.

This is the best filter for keeping the animal allergens under control. I put in a new one in the furnace yesterday before relatives with dog allergies came over and they had no problems the entire evening. So great! Better, too, for us non allergy people to not be breathing in all those minute particles.