I received the Febreze HEPA-type tower air purifier and have been using it for a week. At first, I was concerned that it takes in air and then blows out cold air. I realized it's just gotten cooler here in Ohio and that was the air in the room -- cold. The control panel has three cleaning settings, so I set it to the second to avoid the cold air blowing out. The purifier comes with a scent cartridge and two filters that I just needed to unwrap and put in place. The filters are replaceable dual-action HEPA-type ones with built-in activated carbon pre-filter. The air goes in and is freshened, taking out scents like our old-1957-house smell, strong cooking odors, as well as pet dander and other allergens. (I have a Chihuahua-Beagle mix and he sheds. Don't tell him.) It makes a quiet almost white noise sound that I am used to because I sleep with a sound machine. Because I am prone to migraines, I was concerned about one trigger: scent. The scent portion though is completely adjustable, so I can turn it up or down. No problem. So far, I am enjoying the air purifier and noticed that I am sneezing less, have less congestion, and our house smells nice. Note: This product is sold in 3 different sizes and the tower model is also available in graphite grey.