The building systems responsible for temperature regulation, air circulation, and ventilation within a venue or permanent installation space. HVAC conditions on the show floor directly affect the comfort of exhibitors and attendees, the performance of electronic equipment, and the appearance of fabric graphics, which can droop or distort in high heat and humidity. For permanent installations, HVAC coordination is a standard part of the build-out process to ensure that enclosed structures, conference rooms, and equipment-dense spaces are properly ventilated and climate controlled.