Yes, HVAC is part of engineering. HVAC stands for Heating, Ventilation, and Air Conditioning, and it is a branch of engineering that focuses on the design, installation, and maintenance of systems that control the temperature, humidity, and air quality of indoor and outdoor environments. HVAC engineers use a variety of tools and techniques to ensure that the systems they design and install are efficient, safe, and cost-effective. HVAC engineers must have a thorough understanding of the principles of thermodynamics, fluid mechanics, and heat transfer in order to design and maintain HVAC systems.