In this study, development of a novel system for combined water heating, dehumidification, and space cooling is discussed. This system benefits from multiple technologies developed in Nanostructure Energy System Laboratories at the University of Florida. The membrane-based absorption technology utilized in the system confines the absorbent to alleviate the liquid entrainment issue encountered in the conventional packed bed absorbers. The ionic liquid utilized in the system alleviates the crystallization issue and widens the cycle operating temperature conditions. This system collects the space sensible and latent heats from an air stream and transfer them to hot water.