I lived in an apartment with an Alen Classic air purifier 4 years ago, and it did wonders for my sleep cycle, allergies and overall well-being. When I moved from a humid climate to a very dry climate 3 years ago, I moved with very little and could not take my air purifier with me. It has been on my wishlist for a very long time to own one again. I recently purchased a newly built home and adopted a shelter puppy, so my environment is changing. Due to these variables, I've noticed an intense flare up with allergies and restless sleep, as well as dealing with some lingering wildfire smoke/fumes from surrounding areas. It was long-overdue - health and well-being are so important and valuable, especially now. Since I purchased my two (!) Alen BreatheSmart 45i air purifiers, I've experienced such a difference in restful sleep and clear sinuses. I'm so happy to I have that clarity again!