I live in Georgia, in a city with a huge pollen problem, where each spring everything turns yellow and I have horrible allergy problems.Our Alen purifier has been the answer to my prayers. The air in my home is fresh and the amount of dust and pollen trapped in the filter is amazing.Not only is the Alen purifier effective but extremely quiet.It is super easy to clean the filter and care for.I don't feel comfortable sleeping now without my Alen purifier.