I own a few different brands of air purifiers and the Clorox brand is my favorite. I love All the features, I love how it displays all the air particles in the air. It turns on when it senses high levels of particles/smoke/dust. It right away tries to neutralize the air. I also love that you can turn the display off so at night you don’t have to worry about the light shining through. It’s quiet but it does get a little louder when it senses the particles in the air. It sounds like a small blow dryer. I seriously love it!!!