I run a wood pellet stove six months a year which makes everything really dry including my sinuses. I've tried other air purifiers but none have matched up to the performance of my Molekule. I sleep soundly because it's so quiet and wake up without headaches. I use the app on my phone and watch the filters do their work. My only concern is the life expectancy of the fan and other working parts since I virtually never turn it off. This is the best money I spent in 2018.