[This review was collected as part of a promotion.] Keeps the air Clean in the house with a MERV 12 rating. I would recommend the 1550!

I bought several 4" filters for my central Heating & air system. I have been very impressed with the performance of these filters.

Happy with product, this level of filtration doe not seem to put a strain on my high efficiency furnace

[This review was collected as part of a promotion.] When I had animals, the filter was excellent! Now I'm fresher.

This is our second one and I love how it works and all the things it filters out of the air. Also we have 3 big dogs, lots of hair and dander.

This is the only filter we ever buy! Am very pleased with the quality and performance and would never buy anything else.

I have been using this filter with my carrier furnace/AC for the past 10 years. It works well for me

We have a relatively new construction and I'm always amazed at how dirty these get after a few months of use. That tells me they really work!

This is the only air filter we purchase for our current home. Our old home required the thinner filters, but all are always Filtrete.

I have used these filters for years now. The price is a little high but it works out since the filters work well for three months.