What is meant by the term "set point" in HVAC systems?

The term "set point" in HVAC systems refers to the target temperature that the system is designed to maintain for optimal comfort and efficiency. This is the specific temperature that the thermostat is calibrated to achieve, and the HVAC system will operate to either heat or cool the interior space until that set point is reached.

When the indoor air temperature deviates from this set point, the HVAC system will activate to either reduce or increase the temperature accordingly, ensuring that the environment remains within the desired comfort range. Understanding this concept is crucial for effective HVAC management, as it influences energy consumption, comfort levels, and system performance.

Other options, while related to temperature control within the HVAC systems, do not accurately define "set point." The temperature at which the system starts or shuts down are operational parameters, while outside air temperature is relevant for calculations but does not represent the actual set point for indoor conditions.