As my home gets older and my large family goes in and out, more and more dust starts collecting. We got the Shark Air Purifier to try to get some of the particles out of the air because we noticed everyone was stuffy throughout the day. So far, I have been very pleasantly surprised with it's effectiveness. The air is cleaner (can see less dust when the sun rays shine through the windows) and we are breathing better. The machine is very quiet. It was extremely easy to set up, and we put it in our living room to try to maximize its reach. It looks nice, and doesn't detract from any of the decor. I highly recommend so far.