To provide a further compact integrated heat exchanger for preventing poor effects of heat transfer between adjacent heat exchange parts without using a dead tube.

The integrated heat exchanger comprises a plurality of tubes 1a and a plurality of fins 1b alternately arranged to form a heat exchanger core 1, tanks 2, 3 arranged on both sides of the heat exchanger core 1, and a first partition part 8 partitioning the tanks 2, 3 into a plurality of independent heat exchange parts 13, 14. Connectors 10 (input connectors for both heat exchange parts 13, 14) are provided adjacent to the tubes 1x, 1y as boundaries between the adjacent heat exchange parts 13, 14 in the tank 2, whereby distribution medium having almost the same temperature zone is distributed in the tubes 1x, 1y as boundaries between both heat exchange parts 13, 14.