In hot and humid climates, desiccant air-conditioning systems have been suggested as suitable for improving Indoor Air Quality (IAQ). Generally as dehumidification devices, various types of silica gel rotor have been used to control humidity. In this study, we evaluated the dehumidification performance of the Functional Adsorbent Material - Zeolite (FAM-Z) rotor, which is expected to offer superior dehumidification at lower regeneration temperatures. In this experiment, in which hot and humid air was passed through a FAM-Z rotor (desiccant rotor), we measured the dry bulb temperature and the relative humidity both before and after passage through the FAM-Z rotor, and then calculated the difference in absolute humidity. We also compared dehumidification performance of a FAM-Z rotor and a silica gel rotor. Some parameters, such as the regeneration temperature and airflow, which may affect the performance of the desiccant rotor, were analyzed. As a result, in the case of a regeneration temperature of 50°C, the dehumidification performance of the FAM-Z rotor was superior to that of the silica gel rotor, however when the regeneration temperature was 60°C and above, the silica gel rotor performed better.