Abstract: A heat exchanger assembly for transferring heat between a liquid and air is provided. The heat exchanger assembly includes a frame with at least one fan, the frame has two parallel side pieces, each of which has a groove into which a heat exchanger can be inserted, the heat exchanger is substantially perpendicular to the air flow passing through it, generated by the fan in the assembled state, the heat exchanger can be inserted into the groove such that a seal is obtained, and air leakage through the groove is at least minimized, the heat exchanger and fan are substantially parallel to one another in the assembled state, the at least two heat exchangers can be inserted into the grooves from above or below.