The present disclosure is directed to provide an air conditioner using an evaporative cooler to cool a condenser and improve cooling efficiency, and configured to supply air, which passes through a dry channel of the evaporative cooler, to a humid channel to improve efficiency of the evaporative cooler. In order to implement above, the air conditioner according to the present disclosure includes an indoor unit including an evaporator of a heat pump configured to cool indoor air; and an outdoor unit including the evaporative cooler using evaporation latent heat of water generated from the humid channel to cool air which passes through the dry channel, a condenser of the heat pump cooled by air cooled while passing through the dry channel during a cooling mode, a condenser communication part provided so that some of the air which passes through the dry channel flows to the condenser, and a humid channel communication part provided so that the remaining air which passes through the dry channel flows to the humid channel.