Abstract: An indoor unit of an air-conditioner having a unit body, provided on a rear of a ceiling, having an lower surface portion exposed indoor and an indoor heat exchanger and a blower in its exterior, a decorative panel, structured as the lower surface portion for the unit body, having an inlet port for guiding air in a room to the indoor heat exchanger, a filter fixing portion, structured as a part of the decorative panel, having a filter attached to a position opposite to the inlet port to be detachable, a support portion for supporting the filter fixing portion to be freely rotatable to the decorative panel, and an open/close driving mechanism for driving the filter fixing portion to be freely opened and closed against the decorative panel in a state that the support portion is used as a fulcrum, the mechanism for hanging the filter fixing portion from a ceiling surface when being opened to be moved.

Abstract: At the time of dehumidifying operation, a motor-operated expansion valve is controlled so that evaporation of a refrigerant will be completed in an auxiliary indoor heat exchanger which constitutes an indoor heat exchanger together with a main indoor heat exchanger. A louver is operated to form an air passage through which air discharged from the outlet port of an indoor unit flows to the inlet port. Owing to the formation of such an air passage from the outlet to the inlet port of the indoor unit, dehumidification is performed with outlet air kept from reaching the living space in the room.