Heat exchangers play a crucial role in many industries. It helps in transferring heat between fluids. The term flow arrangement refers to the way fluids flow inside the heat exchangers. The variety in the flow arrangement significantly affects the efficiency of the heat exchanger. The primary aim of this article is to efficiently explore how these flow arrangements affect the performance of the heat exchanger. This exploration has been done in this article by reviewing existing studies. The article has compared the thermal effectiveness of each configuration with the help of a secondary qualitative approach. It has highlighted several key factors like the distribution of temperature, drop of pressure, as well as the complexity of design. It has also discussed the tradeoffs that have been continually faced by engineers. The study has identified four main themes, including heat transfer efficiency, pressure dropIndustry applications, and design and maintenance. The insights gained from the analysis of the specified themes will significantly help engineers in choosing the most suitable flow arrangement while simultaneously maintaining a balance between efficiency and practicality in real‑world applications.