Im a total believer now. Never thought these purifiers did much till we got this one and my room goes from 80% to 100% and I can totally feel the difference. The air feels lighter in the room and makes it so easy to breath. Sleep has been great, but I keep this on while I work and my husband always comments  it’s feel cleaner than an operating room! So yes we are fans! Ease of use is great. Very intuitive.