A dehumidifier is provided that may include a main body, a compressor provided within the main body to compress a refrigerant, a plurality of heat exchangers provided within the main body to condense the refrigerant compressed in the compressor or to evaporate the refrigerant, a first fan to discharge air, having undergone heat exchange with the refrigerant evaporated in the plurality of heat exchangers and having subsequently undergone heat exchange with the refrigerant condensed in the plurality of heat exchangers, out of the main body, a mode switch to perform switching between operating modes, including a cooling mode and a dehumidification mode, and a second fan to discharge air, having undergone heat exchange with the refrigerant evaporated in the plurality of heat exchangers in the cooling mode, out of the main body.