The Haier 12000 BTU portable air conditioner is designed for a room up to 400 square feet. This versatile unit has three modes: Cool for cooling the air Fan to circulate the air and Dehumidify to reduce humidity. Choose from 3 cooling speeds (high medium or low) or 3 fan speeds (high medium or low) to maintain your personal comfort level. Quiet operation (only 49 dBA on low) helps you get a good night's sleep. The easy-to-use electronic control panel includes a 24-hour on/off timer and digital thermostat plus the full-function remote control allows you to control your comfort from anywhere in the room. This unit is easily portable with multi-directional caster wheels so you can use it where you need it when you need it.