Promising review: This HEPA air purifier has been praised by many. Before I got this, my sons' room was covered in a thin layer of dust. One of them would wake up every night coughing. Waikiki is home to many high-rise buildings, so dust can blow off the roofs or balconies of other residents. Despite vacuuming and dusting 3 times per week, I could not keep up with all the dust.After just one day, the air purifier had a fresh, crisp scent that was no longer musty. It almost felt like it was outside. Although I was initially skeptical, I am now incredibly impressed and have returned to review the product. I have had it for three months and still no problems. To check the dust, I opened the filter panel to see how much it had. Eileen JamesAmazon has it for only $99.99