Displacement ventilation systems are a type of HVAC system that introduces conditioned air at low velocities near the floor, allowing it to rise naturally as it warms up. This approach leads to efficient ventilation and thermal comfort in large spaces with high ceilings. A notable benefit is their energy efficiency in high-volume areas, as only the occupied zone receives conditioned air. This targeted air delivery reduces energy consumption compared to traditional systems that cool or heat the entire room, contributing to both energy savings and improved indoor air quality.