The computationally efficient classical MARTINI model is extended to simulate heat transfer simulations of water. The current MARTINI model, variations of it and other coarse grain water models focus on reproducing the thermodynamic properties below room temperature, hence making them unsuitable for studying high temperature simulations especially evaporation at 100{\deg}C. In this work, the MARTINI model is reparametrized using a linear search algorithm and conducting a series of simulations to match the phase equilibrium properties of water. The reparametrized model (MARTINI-E) accurately reproduces liquid density vs temperature and outperforms other leading coarse grain water models in enthalpy of vaporization and vapor density. This new water model can be used for simulating phase change phenomena and other energy transport mechanisms accurately.