No, HVAC is not a ductwork. HVAC stands for Heating, Ventilation, and Air Conditioning, and is a system of components that work together to provide heating, cooling, and air circulation in a building. Ductwork is a component of the HVAC system that is used to transport air from the air handler to the various rooms in the building. Ductwork is made up of metal or flexible tubing, which is connected to the air handler and the various rooms in the building.