Review on Cozmor Air Purifier: Large Room H13 True HEPA Filter with Smart Auto Sensor - Eliminate 99.98% Odors, Mold, Pollen and Smoke, Perfect for Bedroom and Office. Includes Sleep Mode, Timer, and Child-Lock by Stacy Sanders

The Cozmor f air purifier may be suitable for small to medium sized rooms. I have Cosmor in a large, dusty 350-400 square foot room. I compare this device's report to the Standalone Air Quality Monitor (AWAIR). The Cozmor air purifier alternates between excellent air quality and poor air quality every four hours. Sometimes the Cozmor air purifier will show poor air quality (red) for a few hours and then green or blue for a few hours with no connection to the AWAIR monitor reports. AWAIR is consistent and provides a weekly summary showing that the amount of dust increases sharply when the baseboard starts to heat up in the morning. After three weeks, the Cosmor's filter shows pollution (dust is taken out of the air, but not enough to clean the room next to the Cosmor as well). After vacuuming the filter, it appeared to be optically cleaned. The filter life is probably optimistically given as 6 months. Vacuuming the headlines, floors, furniture, and dusting the hardwood floor does not remove enough dust to affect measurements or alter the AWAIR data. I've been using both devices for about a month. To show that I'm trying to remove airborne particles, I find the Cozmor air purifier more appropriate, but this effect isn't enough to make a measurable difference. Consumer Reports does not recommend the use of an electrostatic precipitation system because such a system can increase ozone levels in the home. Cozmor is a fan that forces air through a filter. Adding moisture makes a noticeable difference in comfort, but nothing I've done removes dust - I just have to wait until spring and then vacuum, vacuum, vacuum and dust, dust, dust. The Cozmor air purifier is not magic and does not clean dusty environments.