How to Stop Humidity From Air Conditioner

Air conditioner units come in many shapes and sizes, such as window units, portable units and wall-mounted units. Some units have humidity control or "Dry" buttons. These buttons are used to activate cycles, which eliminate both external and internal humidity from the air. If you live in a humid climate, you might experience an excess of humidity inside the home. After the unit is installed, you might have questions about how to use these buttons to draw moisture from the air.

Internal Humidity

Sometimes the "Dry" button can be found only on the unit.
  1. Press the "On/Off" button on the air conditioner unit or the remote control to turn on the unit.

  2. Press the "Coil Dry" button on the air conditioner or the remote control to activate the internal drying mechanism. An orange indicator light illuminates or the feature appears on the display to indicate that the function is active. The cycle operates for approximately 30 minutes, during which the unit is dried from the inside to prevent the growth of mold and bacteria.

  3. Press the "Start/Stop" button on the remote control or the air conditioner to cancel the operation at any time. The orange "Coil Dry" indicator light or the display indicator turns off.

  4. Press the "Coil Dry" button while the "Coil Dry" cycle is active to reset the cycle back to the beginning.

External Humidity

  1. Press the "On/Off" button to turn on the air conditioner.

  2. Press the "Dry" button on the unit or on the remote control to activate the drying mechanism of the air conditioner. During dry mode, the air conditioner sucks in humid air through the grille, leeches the humidity from the air, evaporates the humidity out of the back of the unit and blows out dry air. This function can be used with the cool air function but might cool the air without the cool function.

  3. Unplug the air conditioner and bring it to a drainage area, such as the bathtub or outside. If the air conditioner doesn't have ducts or a way to export the evaporated humidity to the outdoors, the humidity will accumulate in a drainpipe or drain pan within the unit, which requires drainage to avoid automatic shutoff of the unit.

  4. Unscrew the drainpipe cap and remove the rubber stopper from the bottom back of the unit. Allow the liquid to drain from the unit.

  5. Replace the rubber stopper and cap and plug the unit back in.

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