Method and apparatus for manufacturing a heat exchanger

The invention relates to a method for manufacturing a heat exchanger comprising the steps of: arranged a) providing a heat exchanger assembly (1) having at least two (along an arrangement direction A) adjacent to each other and to be soldered to each other components, b) disposing a first pressure plate (6a) to the heat exchanger assembly (1), which limits this along the arrangement direction (A), and disposing a second pressure plate of the heat exchanger assembly (1) which this counter to the assembly direction (A) limited, so that the heat exchanger assembly (1) is sandwiched between the two pressure plates (6a, 6b) is arranged, c) attaching a clamping device (7) which 8b, 8c) comprises at least one tensioning band (8a, the pressure plates (6a, 6b) such that they each have a (on the two pressure plates 6a, 6b) inwardly to generates heat exchanger assembly (1) toward acting contact pressure, so that this (6a, 6b) of the two pressure plates is transmitted to the components to be soldered, d) soldering the at least two along the arrangement direction (A) adjacent components of the heat exchanger assembly (1).