How do you clean the inside of an aircon?

How do you clean the inside of an aircon?

How to Clean the Inside of an Air Conditioner – A Step-by-Step Guide


Regular cleaning of your air conditioner is essential to maintain its efficiency and prolong its lifespan. Cleaning the inside components of your air conditioner not only improves its performance but also ensures the quality of air circulating in your space. In this comprehensive guide, we will walk you through the step-by-step process of cleaning the inside of an air conditioner.

How do you clean the inside of an aircon?

Step 1: Preparation

Before you begin cleaning your air conditioner, it is important to take a few necessary precautions:

Step 2: Removing the Filters

The filters in your air conditioner are responsible for trapping dust, allergens, and other particles. Cleaning or replacing them regularly is crucial for optimal performance. Here’s how you can remove and clean the filters:

  1. Locate the filter compartment: Refer to your air conditioner’s manual to find the exact location of the filters.
  2. Remove the filters: Carefully take out the filters from the compartment. Depending on the model, they may slide out or require unscrewing.
  3. Clean the filters: Gently vacuum the filters to remove loose dirt and debris. If the filters are washable, rinse them with water and a mild detergent. Allow them to dry completely before reinstalling.
  4. Inspect the filters: Check for any signs of damage or excessive dirt buildup. If the filters are damaged or heavily soiled, it is recommended to replace them with new ones.

Step 3: Cleaning the Coils

The coils of your air conditioner play a vital role in heat transfer. Over time, they can accumulate dirt, dust, and even mold, hindering their efficiency. Follow these steps to clean the coils:

  1. Access the coils: Depending on your air conditioner’s design, you may need to remove a panel or access cover to reach the coils.
  2. Remove loose debris: Use a soft brush or a vacuum cleaner with a brush attachment to gently remove any loose dirt or debris from the coils.
  3. Clean with a detergent solution: Prepare a mixture of mild detergent and water in a spray bottle. Spray the solution onto the coils, paying close attention to heavily soiled areas.
  4. Gently scrub: Use a soft brush to carefully scrub the coils and dislodge any stubborn dirt or grime. Be gentle to avoid damaging the fins.
  5. Rinse the coils: Fill a spray bottle with clean water and rinse off the detergent from the coils.
  6. Dry the coils: Allow the coils to air dry completely before reinstalling the access cover or panel.

Step 4: Cleaning the Condensate Drain

The condensate drain is responsible for removing excess moisture produced by the air conditioner. Over time, it can become clogged with dirt, algae, or debris, leading to water leakage or even mold growth. Here’s how you can clean the condensate drain:

  1. Locate the condensate drain: The condensate drain is usually a small pipe or tube connected to the air conditioner’s indoor unit. Consult your manual if you’re unsure about its location.
  2. Inspect the drain: Check for any visible signs of clogs or blockages in the drain. If you notice standing water or mold growth, it’s likely that the drain needs cleaning.
  3. Clean with a mixture: Prepare a solution of equal parts water and vinegar or bleach. Pour the mixture into the condensate drain, ensuring it reaches all the way through the pipe.
  4. Allow the solution to sit: Let the vinegar or bleach solution sit in the condensate drain for about 30 minutes. This will help dissolve any accumulated dirt, algae, or mold.
  5. Flush the drain: After the solution has had time to work, flush the condensate drain with clean water. You can use a funnel or a small cup to pour water into the drain.
  6. Test the drain: Turn on your air conditioner and observe if the condensate drain is draining properly. If there are no signs of water leakage or blockage, the cleaning process is successful.

Step 5: Cleaning the Air Vents and Exterior

While you’ve focused on cleaning the internal components, it’s important not to overlook the air vents and exterior of your air conditioner. Here’s how you can clean them:

  1. Clean the air vents: Use a soft brush attachment on your vacuum cleaner to remove dust and debris from the air vents. Alternatively, you can wipe them gently with a clean, damp cloth.
  2. Wipe down the exterior: Use a damp cloth to wipe the exterior surfaces of your air conditioner, including the front panel, sides, and top. Avoid using harsh chemicals or abrasive materials that may damage the finish.


Regularly cleaning the inside of your air conditioner is essential for maintaining its efficiency and ensuring clean air circulation in your space. By following the step-by-step guide provided above, you can effectively clean the filters, coils, condensate drain, air vents, and exterior of your air conditioner. Remember to refer to your specific air conditioner’s manual for any manufacturer-specific instructions. By incorporating regular cleaning into your maintenance routine, you can enjoy a well-functioning air conditioner that provides optimal cooling and clean air for years to come. For Jb air con cleaning see here.

clean the inside of an aircon

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