What is the standard factory setting for the indoor fan on most air conditioning units?

The standard factory setting for the indoor fan on most air conditioning units is set to operate in auto mode based on thermostat calls. This means that the fan will turn on and off in response to the temperature set on the thermostat, ensuring that it only circulates air when the system is actively cooling or heating. This mode enhances energy efficiency since the fan is not running continuously, which can lead to higher energy consumption.

Auto mode helps maintain a comfortable environment by allowing the system to operate only when necessary, thereby optimizing performance and avoiding unnecessary wear on the fan. Additionally, by not running at all times, it minimizes noise and promotes a quieter indoor atmosphere. This setting is typical for residential systems, where balancing comfort and energy efficiency is crucial.