An outdoor device for an air conditioner is provided. The outdoor device may include a cabinet, and a base provided at a lower portion of the cabinet. The base may include a base body, on which at least one first seat that supports at least one compressor may be provided, an edge portion disposed along a circumference of the base body and on which at least one second seat that supports a heat exchanger may be disposed, and one or more drain holes defined in the base body to guide discharge of liquid existing in or contained within the base. The at least one first seat and the at least one second seat may be integrated with each other.