How to Clean Air Filter of Daikin Split AC: A Comprehensive Guide

Maintaining the air filter of your Daikin split air conditioner is crucial for optimal performance, energy efficiency, and indoor air quality. This comprehensive guide will walk you through the step-by-step process of cleaning the air filter, ensuring your Daikin unit operates at its best.

Preparing for the Filter Cleaning

Before you begin, ensure that the Daikin split AC unit is turned off and not in operation. This will prevent any potential safety hazards and allow you to work on the unit without interruption.

Gathering the Necessary Tools

To clean the air filter effectively, you will need the following tools:
– Vacuum cleaner with a soft brush attachment
– Mild detergent (if washing the filter)
– Lukewarm water
– Clean, dry cloth or towel

Accessing the Air Filter

  1. Locate the indoor unit of your Daikin split AC system. This is typically the unit mounted on the wall or ceiling.
  2. Gently lift the front panel or fascia of the indoor unit. Refer to your Daikin user manual for specific instructions on how to access the air filter.
  3. Identify the air filter(s) within the indoor unit. Daikin split AC systems often have multiple filters, so be sure to locate all of them.

Cleaning the Air Filter

how to clean air filter of daikin split acImage source: Daikin Air Conditioner Outdoor by Dinkun Chen

Removing the Air Filter

  1. Carefully pull out the air filter(s) from the indoor unit. Depending on the model, there may be tabs or handles that you can use to slide the filter out.
  2. Examine the filter(s) for any visible dirt, dust, or debris. This will help you determine the appropriate cleaning method.

Vacuuming the Air Filter

  1. Use the soft brush attachment on your vacuum cleaner to gently remove any loose dust or debris from the surface of the air filter(s).
  2. Pay close attention to the pleats or folds of the filter, ensuring that you thoroughly clean all areas.
  3. Avoid using excessive force or bending the filter, as this can damage the delicate material.

Washing the Air Filter (Optional)

  1. If the air filter is heavily soiled, you can wash it with a mild detergent and lukewarm water.
  2. Prepare a cleaning solution by diluting a small amount of detergent in lukewarm water.
  3. Submerge the air filter(s) in the cleaning solution and gently agitate them to remove any stubborn dirt or grime.
  4. Rinse the filter(s) thoroughly with clean, lukewarm water to remove all traces of the detergent.
  5. Carefully pat the filter(s) dry with a clean, dry cloth or towel. Avoid wringing or twisting the filter, as this can damage the material.

Drying the Air Filter

  1. Allow the air filter(s) to fully air dry in a shaded area, away from direct sunlight or heat sources.
  2. Ensure that the filter(s) are completely dry before reinstalling them in the indoor unit.

Reinstalling the Air Filter

  1. Carefully slide the clean, dry air filter(s) back into the indoor unit, ensuring that they are properly aligned and secured in place.
  2. Refer to your Daikin user manual for specific instructions on how to correctly reinstall the air filter(s).
  3. Close the front panel or fascia of the indoor unit, making sure it is securely in place.

Cleaning the Indoor Unit

  1. Use the vacuum cleaner with the soft brush attachment to gently remove any dust or debris from the interior of the indoor unit, focusing on the air vents, coils, and other accessible areas.
  2. Wipe down the exterior of the indoor unit with a clean, dry cloth to remove any accumulated dust or fingerprints.

Sanitizing the Indoor Unit (Optional)

  1. For a more thorough cleaning, you can consider having your Daikin split AC unit professionally sanitized.
  2. Contact a qualified HVAC technician or service provider to perform a comprehensive sanitization of the indoor unit, including the coils, fans, and other internal components.
  3. Regular sanitization can help maintain optimal indoor air quality and prevent the buildup of mold, bacteria, and other contaminants.


By following this comprehensive guide, you can effectively clean the air filter of your Daikin split AC unit, ensuring optimal performance, energy efficiency, and improved indoor air quality. Remember to refer to your Daikin user manual for any model-specific instructions and to consult a professional if you have any concerns or need further assistance.