In this paper the full house hygrothermal performance of an aerated concrete wall system is examined for the hot and humid climate of Miami. The results clearly demonstrated the limited drying potential for the wall system in that climate. The selected exterior thermal insulation strategies and interior vapor control strategies in this study show the critical behavior of the full house with respect to drying initial construction moisture. Moisture related problems such as mold growth are simulated and discussed. From these results moisture control strategies are identified for the whole house hygrothermal performance.