This DH Lifelabs Aaira + Humidifier disinfects and increases the humidity in the air. It is quiet enough to run at night in our bedroom for better air quality while sleeping. We like the timer feature so you can turn it on for 2 or 4 hours and it automatically turns itself off at the end. It uses non-ionized salt and regular water. The digital controls are clear and easy to ready with a blue light source so they are not too bright at night. Three fan speeds and a humidity percent indicator are clearly identifiable. We empty ours each week and refill for a fresh result. Really nice design and small enough to fit most places. Thinking about getting a second one for our guest room.