In the heating, ventilation, and air conditioning sector, SITC typically stands for Supply, Installation, Testing, and Commissioning. This comprehensive contractual acronym encompasses the entire lifecycle execution of an HVAC project handled by a specialized mechanical contractor. It begins with the procurement and supply of all necessary equipment, such as chillers, air handling units, ductwork, and control panels, followed by physical installation within the building infrastructure. The process concludes with rigorous performance testing and system commissioning to verify that environmental controls, airflow rates, and energy efficiency metrics meet engineering specifications.