Cooling/heating function - set the ideal temperature for your room whether it be a hot summer afternoon, or cold winter evening Humidifier/air purifier function - create the environment by humidifying dry rooms or purifying the air to make any room a comfortable place to be Water-shortage alarm - never get caught short with an automatic alarm indicating when the water levels are becoming low 7.5 hour timer - for added convenience you can set a timer for a duration of up to 7.5 hours Portable design - move the unit around with ease using the built-in wheels