Yes, proper ventilation is important for walk-in wardrobes. Ventilation helps prevent moisture buildup, which can lead to mold and mildew growth, damaging clothes and other stored items. Additionally, good airflow helps to keep the wardrobe smelling fresh by removing odours from shoes, clothes, and other items. If possible, natural ventilation through windows or vents is ideal, but mechanical ventilation or a well-placed air vent in the heating and cooling system can also be effective solutions.