The ‘fan’ setting on a thermostat controls the operation of the air circulation system unbiased of heating or cooling. Usually, a thermostat affords two fan settings: ‘auto’ and ‘on’. The ‘auto’ setting prompts the blower motor solely when the heating or cooling system is actively working. Conversely, the ‘on’ setting forces the blower motor to function repeatedly, circulating air all through the constructing even when the system isn’t actively heating or cooling.
The continual air circulation offered by the ‘on’ setting can enhance temperature consistency all through a constructing, scale back stagnant air pockets, and improve air filtration, resulting in improved indoor air high quality. Traditionally, steady fan operation was extra widespread in older programs; nevertheless, trendy power effectivity issues have led to the prevalence of the ‘auto’ setting to preserve power. Whereas the ‘on’ setting consumes extra power, its advantages relating to air high quality and temperature distribution may be important in sure environments or for people with particular sensitivities.