An outdoor device for an air conditioner is provided that may include a compressor that compresses a refrigerant, a condenser that condenses the refrigerant compressed in the compressor, an expansion device that decompresses the refrigerant condensed in the condenser, an evaporator that evaporates the refrigerant decompressed in the expansion device, and a refrigerant storage that bypasses at least a portion of the refrigerant condensed in the condenser to store the bypassed refrigerant therein. The refrigerant storage may include a first storage that stores the bypassed refrigerant, and a second storage in which the refrigerant passing through the evaporator is introduced. The second storage may discharge a gaseous refrigerant of the introduced refrigerant to the compressor. The first storage may be provided above the second storage to supply the refrigerant stored therein into the second storage.