It has been 3 months since we had our Premier One System installed, and what a difference it has made. Prior to install, we would see dust gather and collect everywhere. Post install, we only have to dust once a week instead of three times a week. There is close to nothing. I would highly recommend getting the system installed as it has helped provide cleaner air making it easier to breathe. We do a lot of house projects which include painting, sanding, etc and the purifier helps minimize the dust by pulling it out of the air. Thanks so much for recommending and installing.