The present disclosure relates to an adjustable fluid flow system for a temperature control system having a heat exchanger including a plurality of channels configured to transmit working fluid and direct the working fluid through a selection of two or more channel sections. The adjustable fluid flow system includes a first chamber defining a first flow path that is aligned with a first channel section of the two or more channel sections, wherein the first chamber includes a first outlet in fluid communication with the first flow path, and a second chamber defining a second flow path that is aligned with a second channel section of the two or more channel sections, wherein the second chamber includes a second outlet in fluid communication with the second flow path. The adjustable fluid flow system further includes a damper configured to adjust a flow of air along the first flow path.