In Japan, intermittent air-conditioning systems predominate, and it is thought that while designs need to take into account the thermal storage load for heating, the thermal storage load for cooling can be ignored because the effect is small. In this study, simulations were conducted on thermal storage load for cooling, taking into account the thermal sensation distribution. It was clearly established that a simulation can be used to evaluate the relationship between thermal comfort and thermal storage load for cooling, and that six times more energy was required at the start-up time on Monday than for continuous air-conditioning.