But, if the fan is set to On, the moisture on the refrigerant coils does not actually get the chance to drain away
You might be inviting humidity into your household without even knowing it by setting your A/C temperature control fan to On instead of Auto. On plus Auto are the settings for your fan. The difference between ON plus AUTO boils down to when the fan blows. In the Auto position, the fan only blows during the A/C cooling cycle. In the On position, the fan blows all the time, even when the A/C is not cooling. This also means that it uses more energy plus costs more money to operate. To better understand how a fan affects indoor humidity, first you should recognize what the A/C device fan does plus where it is located. If you have a split system AC device, you definitely have numerous fans in your A/C unit. One fan for your outdoor component plus a single fan for your indoor device. Your indoor component fan sits behind the cooling coils plus is responsible for pushing air through the ducts plus into your household. Basically, the On setting is not allowing your A/C device to officially dehumidify your home. Your A/C has more than a few tasks. It cools your household plus dehumidifies it, but when warm air from inside your household is pulled into your indoor unit, it passes over legitimately making the refrigerant coils freeze. Those cooling coils absorb the warmth plus moisture from the air. Then, that freezing dry air is totally pushed back into your home. If the fan is set to Auto, that moisture collects plus sits on the refrigerant coils. Once the fan shuts off in between cooling cycles, that moisture has actual time to slide off the coils plus drain away outdoors. But, if the fan is set to On, the moisture on the refrigerant coils does not actually get the chance to drain away. Because the fan blows on a regular basis, most of the moisture evaporates plus gets blown straight back into your household.