I've waited two years to own a Molekule and it was definitely worth the wait. I've had my unit for a little over 2 weeks now and I noticeably feel the difference in my air quality. I mostly notice it in the morning. I'm used to waking up every morning with a stuffy nose and cough, but the last few weeks I've been waking up feeling clear. It's almost unbelievable, my body is loving cleaner air. I quiet mode is helpful when I'm sleeping, I set it to dark/quiet mode for two hours when going to bed and then it turns itself back to regular after two hours when I'm sound asleep. Can't believe I waited so long. Highly recommend! I know my Molekule will be helpful during fire season here in Los Angeles next year.