Bought this bad boy on a mid year sale for $299. Arrived almost instantly. The clips that hold in the filter broke the first time I was setting it up trying to take the plastic wrap off the filters. I’ve managed to glue them back. I suffer a disability so Amazon sucks if I ever need to take something back. Such a hassle. Air quality definitely feels cleaner, it was pretty clean to start with though. It does change and into turbo mode if it determines pollution eg.-after cooking or insect killer. Have noticed sinuses clearer, the wife as well. I will add benefits after a few months of use.