This filter has come through on every claim the manufacturer promised, and goes even farther. I have this filter installed in the mostly unfinished, dusty basement of a 40 year old home. My reasons for purchasing this unit are: Severe allergies due to pets and a dusty environment. Frankly I am surprised of the positive effect this unit has had on my health. I couldn't be happier with my purchase!

NOTE: I have not yet had to replace the filter so I am not sure what the life of the filter is going to be for my environment. I have owned this unit for about six weeks.