A stacked heat exchanger is a compact and efficient heat transfer device where multiple individual heat exchanger units are arranged in a vertical or horizontal stacked configuration. This setup significantly increases the heat transfer surface area within a minimal footprint, making it ideal for installations where space is limited. Stacked heat exchangers are commonly used in HVAC systems, automotive cooling systems, power plants, and marine environments. They typically utilize plate, fin, or microchannel technology to enhance thermal conductivity and ensure optimal heat transfer between fluids. Each stacked layer allows separate fluid streams to flow through, enabling effective thermal exchange while maintaining compactness. One of the key advantages of this design is its modularity—additional units can be added or removed to meet specific capacity requirements or to simplify maintenance. This configuration supports both counterflow and crossflow patterns, offering flexibility in design and improving efficiency in varied industrial and commercial applications