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A compact heat exchanger is generally defined as one which incorporates a heat transfer surface having a high "area density". In addition to fluid properties and geometrical parameters; heat flux, mass flux and vapor quality also affects the heat transfer coefficient. Chen introduced two dimensionless factors, the suppression factor and the Reynolds number factor also known as enhancement parameter, to account for the smaller effective superheat due to forced convection as compared to that in a pool boiling case, and for the increase in convective turbulence due to the presence of vapour phase, respectively. In this work unified Enhancement factor empirical correlations based on temperature ranges of boiling point of fluids are developed using non- linear regression for forced convective boiling heat transfer in compact heat exchangers.