An accumulator and an air conditioner using thereof

An accumulator according to the present invention comprises: a housing forming the appearance of the accumulator; an inlet pipe guiding a refrigerant to flow into the housing; a guide pipe providing a flow path for the refrigerant flowing from the inlet pipe; and an outlet pipe allowing the refrigerant passing through the guide pipe to be discharged to the outside of the housing, wherein the guide pipe is partially exposed from one surface of the housing to the outside of the housing. An air conditioner according to the present invention comprises: an indoor unit conditioning indoor air; and outdoor unit connected to the indoor unit, and having an accumulator having functions of a compressor compressing a refrigerant and a gas-liquid separator, wherein the accumulator includes: a housing forming the appearance of the accumulator; and a guide pipe guiding the flow of the refrigerant housed inside the housing, and partially exposed from one surface of the housing to the outside of the housing.