Filters have gotten so expensive, like most things nowadays has become way too costly. When I saw and researched these, they gave me qualities to choose from and in the size I needed. I used to work at finding filters in my size and that I could afford. These filters did that and more. I was able to pick what qualities I was looking for and save money by doing the subscription service. Also, made in the USA!!
Have used them at both of our homes. Purchase the odor eaters last year not good restricted the unit to much. Just purchase the Merve 8 works great. Now Im stuck with 4 or 5 the odor ones.
I have been using these filters a couple years. I change out the filter every 3-4 months and can see that the filter is doing its job well. I am very happy with the quality of these filters.