Intelligent PM 2.5 filter: Better known as i-PM 2.5, this is a transparent air-filter specifically made for indoor air purification that works by using natural passive ventilation to improve the indoor air quality. Refrigerant leakage detector: The AC also has the power to readily identify any leakage of refrigerant and immediately turns off the AC while continuously displaying error or protection code on the display. Sleep mode: This is an energy-saving mode that gradually increases the set temperature all through the night to a certain extent. However, the increase in temperature is extremely steady and does not affect the comfort-level of the user. Auto-restart mode: The AC's memory retains the setting when the power goes off, once the power is restored, the split AC begins operating with the same settings again. Auto-start mode is especially useful in areas that experience frequent power cuts. Auto-swing: The auto-swing mode evenly cools the entire room or space by automatically swinging the air deflector.