My daughter has this in her bedroom to see if it would help her breathe better at night. She is regularly congested. This has helped her somewhat. She loves the pink noise and it has certainly taken down the dust and particles in the air. The room smells clean and fresh. We're looking at other models to cover a larger area in the house. 

It arrived in good time and excellent condition. So easy to set up and get running. I would recommend this product (BreatheSmart 45i)