What is Auto Clean Function in AC and How to Use It

Discover efficient auto-cleaning tips for your AC. Enhance performance and longevity.
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3 min
17 July 2025

An air conditioner is essential for maintaining a comfortable indoor environment, providing efficient cooling even in extreme temperatures. Modern AC for summers come with advanced features such as energy saving technology, air purification, and smart controls for effortless operation. Whether for a home or office, a well-chosen AC ensures optimal cooling while keeping energy costs low. From split and window units to inverter models, there are options to suit different room sizes for ac and requirements.
 

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Understanding auto clean function in ACs

The auto clean function in an air conditioner is a convenient feature designed to enhance its longevity and performance. This function eliminates moisture inside the unit, preventing the buildup of mould, bacteria, and unpleasant odours. When activated, the AC continues running for a few minutes even after being turned off, allowing the internal components to dry completely.

For those considering an 1.5 ton AC, the auto clean function can be a valuable addition. It ensures that the cooling system operates efficiently without requiring frequent manual cleaning. This is particularly beneficial in humid environments where moisture accumulation can lead to hygiene issues and reduced cooling performance.

Regular use of the auto clean function can also contribute to energy efficiency. A cleaner AC requires less power to circulate air, leading to lower electricity consumption. Additionally, this feature helps maintain the evaporator coil’s efficiency, ensuring consistent cooling over time. Whether you opt for a split or window AC, having an auto clean mode simplifies maintenance and extends the unit’s lifespan.

 

How auto clean helps in AC maintenance

The auto clean function plays a crucial role in keeping an air conditioner in optimal condition. It prevents dust and moisture buildup, which can otherwise lead to clogged filters and decreased efficiency. By removing excess humidity inside the unit, it reduces the risk of bacterial growth, ensuring clean and fresh air circulation.

For those who require flexibility in cooling solutions, a portable AC with an auto clean mode offers added convenience. Unlike fixed units, portable air conditioners can accumulate dust more quickly due to frequent movement. The auto clean feature ensures that internal components remain free from contaminants, reducing the need for manual cleaning.

By using this function regularly, users can extend the lifespan of their AC while maintaining optimal cooling performance. It also minimises the chances of unpleasant odours, which often result from damp interiors. Whether you use the AC daily or occasionally, enabling auto clean mode after extended operation can help keep it in the best working condition.

 

Steps to use auto clean mode in different AC brands

The process for activating auto clean mode varies across different AC brands. Below are the general steps to ensure efficient use of this feature:

 

  • LG and Samsung: Press the auto clean button on the remote control. The AC will continue running for a few minutes even after being switched off, drying out internal components.
  • Daikin and Panasonic: Access the settings menu on the remote and locate the auto clean function. Activate it after switching off the AC to allow thorough drying of internal parts.
  • Hitachi and Voltas: Some models include an automatic activation setting, enabling auto clean mode every time the unit is turned off. If manual activation is required, press the auto clean button after shutting down the system.
  • Carrier and Blue Star: Navigate through the mode settings on the remote control. Select auto clean and confirm activation. This function ensures the removal of moisture from the coils and filters.

For those using an inverter AC, auto clean mode is especially beneficial. Since inverter models operate at variable speeds, maintaining clean coils ensures consistent performance and energy efficiency. Regular use of this function can prevent dust accumulation, allowing the AC to cool efficiently.

 

Common issues with auto clean function and fixes

Although auto clean mode is a valuable feature, some common issues may arise. Understanding these problems and their solutions can help maintain the AC's efficiency.

 

  • Auto clean not activating: If the function does not start, check the remote control settings and ensure that the mode is enabled. Some models require a long press of the auto clean button for activation.
  • Unusual odours after auto clean cycle: This can occur if the AC has accumulated excessive dust. Cleaning the air filters manually before using auto clean mode can help resolve this issue.
  • Excessive noise during operation: If the AC produces more noise while running the auto clean function, inspect the unit for loose components or clogged vents. Regular maintenance can prevent this problem.
  • Moisture not fully removed: In humid conditions, moisture may not evaporate completely. Running the AC on fan mode for a few minutes after the auto clean cycle can help dry out any remaining dampness.

If issues persist, professional servicing may be required to diagnose the problem. Keeping an AC in good condition involves regular maintenance, and the auto clean function is just one of the features that can make this process easier.
 

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What is the auto clean function in an AC, and how does it work?

The auto clean function in an AC helps remove moisture and dust inside the unit, preventing mould and bacteria buildup. After switching off the AC, this mode runs the fan for a few minutes to dry internal components. This process enhances hygiene, ensures fresh airflow, and maintains cooling efficiency by preventing dirt accumulation on coils and filters.

How often should I use the auto clean feature?
Using the auto clean feature after every extended cooling session is recommended to maintain the AC’s efficiency. In humid conditions, activating it daily helps prevent moisture build up and odours. For moderate use, running it once or twice a week keeps internal components clean. Regular use reduces the need for frequent manual cleaning and ensures consistent performance over time.

Does auto clean eliminate the need for professional AC servicing?
While the auto clean function helps maintain hygiene and prevents dust accumulation, it does not replace professional servicing. Over time, filters, coils, and other internal components require deep cleaning to ensure efficient cooling. Annual servicing is necessary to check refrigerant levels, clean ducts, and inspect overall performance, ensuring the AC operates at peak efficiency.

Which AC brands offer the best auto clean function?
Several leading brands offer advanced auto clean functions, including LG, Samsung, Daikin, Voltas, and Panasonic. These brands incorporate innovative technology to enhance moisture removal and prevent bacterial growth. Features may vary across models, so checking product specifications can help choose an AC with an efficient auto clean system suited to your needs.

What is the auto clean function in an AC, and how does it work?
The auto clean function in an AC helps remove moisture and dust inside the unit, preventing mould and bacteria buildup. After switching off the AC, this mode runs the fan for a few minutes to dry internal components. This process enhances hygiene, ensures fresh airflow, and maintains cooling efficiency by preventing dirt accumulation on coils and filters.

How much time does AC take to auto clean?

The auto-clean process usually takes 30 minutes to a few hours, depending on the model and cleaning level. It removes dust and moisture for better performance.

Can I turn on AC after self-cleaning?

Yes, you can turn on the AC once the self-cleaning cycle finishes and the unit dries completely. This ensures safe operation and prevents moisture-related issues.

What is the benefit of self-cleaning AC?

Self-cleaning ACs reduce dust, mold, and bacteria inside the unit, improve air quality, lower maintenance needs, and keep cooling efficient, making them convenient and healthier for everyday use.

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