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The main aim of our project is experimentally investigating the feasibility of an expanded paraffin wax phase change material (PCM) heat exchanger operating as a condenser in an instant air source. The temperature distribution and volume expansion of an expanded paraffin wax were investigated and tested under different inlet water flow rates. However, in the PCM heat charging/discharging process, non-uniform temperature distributions played an important role in the heat exchanger efficiency. During the heat discharging process, the energy efficiency and the heat transfer rate were also analyzed using experimental data. The use of phase change materials through latent heat storage is an unusual approach to maintaining thermal energy. Heat exchanger with PCM provides benefit of high energy storage density and the equal temperature of the storage process. A tube in shell type heat exchanger is use. Water circulates in tubes of heat exchanger and around it has paraffin wax as phase change material.