I purchased this because I got the flu and had a really bad cough and congestion. I love this humidifier. It was very easy to set up and you can see the mist coming out of the chimney so you can tell it's working. I also like the night light function. I plan to pick one of these up for my daughter so she can have it for my grandchildren when they come home from school with illnesses. It's not big and bulky like ones I have had in the past so that is an added plus.