An air conditioner is disclosed. The disclosed air conditioner can comprise: a housing having an inflow port and a discharge port; a partition disposed inside the housing so as to divide the inside of the housing into a first space at the inflow port side and a second space at the discharge port side, and having at least one opening for allowing the first space and the second space to communicate; at least one blower unit disposed in the first space, and including a duct, which passes through the opening so as to protrude toward the second space and discharges the air of the first space to the second space; and a heat exchanger disposed in the second space.