This 9000 BTU inverter split air conditioner provides you with all-year-round comfort, featuring 5 modes (cool/heat/fan/dry/sleep) and 4 speeds (low/medium/high/auto). The AC unit is also integrated with special features including ECO mode, self-cleaning, iFEEL, turbo, display off function, 4D auto swing and more. It offers fast cooling and heating to spaces up to 450 sq.ft. And the innovative technology can keep the temperature stable and reduce energy consumption. You can set the 0.5-24H timer according to your need. All adjustments can be made through the remote control. Besides, the 23dB max noise level ensures a quiet environment for sleeping or working. Please note: Professional installation is required.