This paper demonstrates the application of Hill Climbing algorithm for the design optimization of Plate-Fin Heat Exchanger (PFHE). Maximization of the effectiveness and minimization of the total annual cost are considered as two objective functions. Thermal modelling is done by ε-NTU method to estimate the heat exchanger effectiveness and pressure drop. Fin pitch, fin height, fin offset length, cold stream flow length, no-flow length and hot stream flow length are considered as six design parameters. One application example is presented to demonstrate the effectiveness and accuracy of the Hill Climbing algorithm. The results of optimization using Hill Climbing are validated by comparing with those obtained by using Non-Dominated Sorting Genetic Algorithm (NSGA-II). Keywords: Hill Climbing Algorithm, Plate-Fin Heat Exchanger, Thermal Modelling Cite this Article Rakhade RD, Panchbhai MP, Gujrathi AS. Application of Hill Climbing Algorithm for Optimization of Plate Fin Heat Exchanger. Journal of Refrigeration, Air Conditioning, Heating and Ventilation. 2015; 2(1): 1-6p.