Normal-hexadecane microcapsules as microencapsulated phase change material (MEPCM) were effectively synthesized by suspension polymerization with Polymethylmethacrylate(PMMA) and Poly (methylmethacrylate-co-butyl acrylate). Ethylene glycol dimethacrylate (EGDM) was used as a crosslinking agent. The effect of shell type and EGDM content on thermal and morphological properties of the microcapsules were investigated. The morphology of synthesized microcapsules were studied by SEM. The type of microcapsules completely varied by changing the polymeric shell from PMMA to Poly (methylmethacrylate-co-butyl acrylate). Thermal properties of microcapsules were characterized with DCS, TGA, and infrared camera. DSC analysis demonstrated that increasing of n-hexadecane amount and EGDM concentration results in enhancing latent heat capacity of microcapsules. TGA analysis represented that the rate of releasing the phase change material decreases greatly by increasing EGDM amount. Infrared camera test has been done for the first time on MEPCM to evaluate its susceptibility for controlling temperature fluctuation. The results revealed that the synthesized PMMA microcapsules have good potential for thermal energy storage applications.