HVAC Engineering stands for Heating, Ventilation, and Air Conditioning Engineering. It focuses on designing and maintaining systems that control indoor climate and air quality in buildings. HVAC engineers ensure that spaces are comfortable, energy-efficient, and safe by regulating temperature, humidity, and airflow. These engineers work on various projects, including residential homes, commercial buildings, and industrial facilities. They use principles of thermodynamics, fluid mechanics, and heat transfer to create systems that meet specific needs. Proper HVAC design is essential for energy conservation and environmental sustainability, making it a critical field in modern construction and architecture.