An indoor unit for an air conditioner has a box-shaped body casing (1). A pair of air inlets (5) is provided in the front face of the body casing (1). A pair of air outlets (7) is provided on both sides of each air inlet (5). Inside the body casing (1) is formed a pair of air paths (6) leading from each air inlet (5) to the adjacent air outlets (7). Inside the body casing (1) are provided turbo fans (8) so as to correspond to respective air inlets (5), and on both sides of each turbo fan (8) is provided a pair of heat exchangers (9) so as to correspond to the pair of air outlets (7). Below the pair of heat exchangers (9) and the turbo fan (8) is provided a drain pan (15). In the drain pan (15) is received refrigerant piping (21a-21d) for connecting the pair of heat exchangers (9) to each other.
