A microchannel type heat exchanger is provided. The heat exchanger may include a first heat exchanger and a second heat exchanger, in which a plurality of flat tube may be provided. The heat exchanger may include a first path defined in a first portion of the plurality of flat tubes provided in the first heat exchanger, the first path being configured such that a refrigerant flows in a first direction, a second path defined in a second portion of the plurality of flat tubes provided in the first heat exchanger, the first path being configured such that the refrigerant, supplied from the first path, flows in a second direction opposite to the first direction, a third path defined in a remaining portion of the plurality of flat tubes provided in the first heat exchanger and a portion of the plurality of flat tubes provided in the second heat exchanger, the third path being configured such that the refrigerant, supplied from the second path, flows in a third direction opposite to the second direction, and a fourth path defined in a remaining portion of the plurality of flat tubes provided in the second heat exchanger, the fourth path being configured such that the refrigerant, supplied from the third path, flows in a fourth direction opposite to the third direction.