Phase changing materials are widely investigated in many different aspects due to the increasing interest in energy storage applications, thermal insulation and thermal comfort. Electrospinning is a simple technique for producing ultrafine (sub-micron) fibers from a wide variety of polymers. With PCMs, it is generally used as a method to obtain shape stabilized PCMs. In this study, microencapsulated phase change materials (MPCM) are incorporated into nanofiber structure. Morphology, chemical structure, thermal properties and water absorbency of the composite nanofibers are investigated. Uniform nanofibers displaying both thermoregulatory properties and hydrophobicity were obtained.