Review on Next-Level Air Purification: Germ Guardian WiFi Bluetooth Smart Voice Control Air Purifier with UV Light Sanitizer and True HEPA Filters for Allergies, Mold, Odors, Smoke, Pet Dander - 22inch 5-in-1 CDAP4500BCA by Tony Conlon

From this we learned that there are many allergens in our new apartment, although my cough and constipation were already a big clue. We found out people in front of us had a dog and although the place was cleaned well the vents were still blowing everywhere. Without her I couldn't breathe at all. Of course we still hire someone to clean the vents, but the yellow circle shows us that the air is that bad. Update: We've already made it through 2 filter changes and it's made a huge difference in our lives. My allergies no longer wake me up at night when one of us is sick and the other isn't, and that attracts quite a bit of fur from our older cats. We will buy this brand again for home and already have it for work.