Provided is an air-conditioning indoor unit allowing easy maintenance to be performed by allowing a drain pan disposed in the rear within a body casing to be easily loaded and unloaded through the front face of the body casing. This air-conditioning indoor unit is equipped with: a body casing which is formed in a box shape; a first heat exchanger which is built inside the body casing in such a manner that the lower end thereof is located in the rear within the body casing; an air blower which is built inside the body casing and sends indoor air to the heat exchanger; a first drain pan which is disposed below the lower end of the first heat exchanger; a maintenance opening which is formed in the front face of the body casing; a guide mechanism which guides the first drain pan inserted inside the body casing from the maintenance opening to a standby position located below the lower end of the first heat exchanger; and a vertically-moving mechanism which vertically moves the first drain pan between the standby position A and a position B immediately below the lower end of the first heat exchanger.
