No perceptible change in air quality
I do not understand the rave reviews I have seen on this product.<br /><br />1.  It is the size of a thermos.  This may be a plus as I can see how you can easily travel with it if desired.<br />2.  The fan does produce some white noise which does not seem to be noticeable on most days, especially when the A/C in the building is running.<br />3.  The smell of the room is no different with it running or not.<br /><br />I use this at work inside my small office (10' by 12') as I want to clean the air when my co-workers/clients come in with colds.  The device may be working... however, there is NO perceptible change in the air quality and the smells of the office are no different even with it running 24/7.<br /><br />Perhaps the UV is killing germs however, I cannot imagine that the device really can clean much air as the entire assembly is the size of a large coffee cup.  I guess independent studies on the quality of the air before and after are the only way to truly know if this thing really makes a difference in the level of germs in the air?<br /><br />Good luck with your decision to buy or not.  I paid $40 for mine and do not feel it is really a great investment.  I would suggest those with $40 to spend to invest in replacing the air filters in your house with high-end filters (i.e. 3M filtrete filters) instead if an improvement of air quality is the goal.
Rating: 2 stars