Created to meet stringent codes and standards for commercial HVAC systems, Aztec AMC combines refrigerant-free evaporative cooling technology with advanced air turnover system. System uses direct-drive plenum fans with VFD controls that reduce energy consumption when equipment is operating at part load. Available remotely 24/7 through web interface as well as locally via touchscreen, direct digital controls help monitor and adjust HVAC systems for comfort, costs, and energy efficiency.