Ventilative cooling refers to the use of natural or mechanical ventilation strategies to cool indoor spaces. The use of outside air reduces the energy consumption of cooling systems while maintaining thermal comfort. The most common technique is the use of increased ventilation airflow rates and night ventilation, but other technologies may be considered as well. Ventilative cooling is applicable in a wide range of buildings and may be critical to realise low energy targets for renovated or new Nearly Zero-Energy Buildings (NZEBs).