Works pretty good. The quality in the air definitely has improved. I’ve notice that the air improves on the third fan speed and turbo speed only. The turbo speed is great but a little too loud if using the his unit while you sleep. This unit is being use in a New York basemen and it does improve the room air quality. Removes any humid, mold , smelly orders. Specially if used on turbo speed. Good unit for the price.