What does the acronym ATC stand for in building system terminology?

• A. Air Temperature Calibration
• B. Automatic Temperature Controls
• C. Adaptive Temperature Control
• D. Active Thermal Circuit

Answer: (B)

ATC stands for Automatic Temperature Controls. This refers to the system that automatically regulates heating, cooling, and sometimes ventilation to keep a space at the desired temperature. It uses temperature sensors to measure the environment, a controller to compare the measured value to the setpoint, and actuators to adjust equipment accordingly. This is a standard term in building systems and commissioning, encompassing thermostats, controls logic, integrations with a building management system, and the control sequences that keep indoor conditions within target ranges. The other phrases don’t reflect a widely used or recognized term for a building temperature control system: Air Temperature Calibration implies only sensor calibration, not a control system; Adaptive Temperature Control is a different control strategy not typically abbreviated as ATC; Active Thermal Circuit is not a standard term in building automation.