The Haier 12000 BTU portable air conditioner with 8000 BTU heat mode keeps you cool when it is hot and warm when it is chilly so you are always comfortable. Designed for a room up to 400 square feet it has four modes: Cool for cooling the air Heat for heating the air Fan to circulate the air and Dehumidify to reduce humidity. Choose from 3 cooling speeds (high medium or low) 3 heating speeds (high medium and low) and 3 fan speeds (high medium or low). 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.