Summer allergy season is waging a full assault on my sinuses, so I purchased this air purifier to make the air in our living room more palatable. My first impression is that this device is extremely easy to use: the auto setting senses when the air needs cleaning, so you don't need to wait until you are uncomfortable to turn it on; likewise, a monitor lets you know when the filter needs cleaning. Surprisingly, it neutralized a burning smell when I accidentally overcooked something in our kitchen the other night -- a testament to how powerful this machine is. Finally, for its size, it is extremely light, which was a nice surprise as well.