LS Aircon Servicing Singapore

Top 7 Tips to Clean Aircon Unit in Singapore: A Detailed Guide

Homeowners must clean aircon units to keep a healthy and calm indoor environment. Air conditioning is a vital part of life in Singapore due to the tropical climate. Regular maintenance and cleaning of your aircon ensure it runs efficiently, extends its life, and improves indoor air quality. If you’re wondering how to keep your aircon in top shape, this detailed guide will walk you through seven essential tips for cleaning your aircon in Singapore.

How to Clean Aircon Unit?

Air conditioning is necessary in most homes and offices in Singapore’s hot and humid weather. However, regular aircon cleaning in Singapore is essential to keep your aircon running efficiently and to avoid costly repairs. Dust, dirt, and mold can accumulate over time, reducing your unit’s efficiency and affecting air quality. Homeowners must be aware of the importance of air conditioner cleaning. Here, we provide seven simple yet effective aircon cleaning tips to ensure it stays in excellent condition and works efficiently.

Tip 1: Turn Off and Unplug Your Aircon

Safety is the first step in any maintenance task. Before you begin AC cleaning, turn off the power and unplug the unit. This will prevent any electrical accidents or injuries while you are cleaning. Additionally, turning off the power ensures no cool air is wasted during cleaning.

Tip 2: Clean or Replace the Filters

The air filter is one of the most critical components of your aircon. It traps dust, dirt, and other particles, preventing them from circulating in your home. Over time, these filters can become clogged, reducing airflow and efficiency.

To clean the filter:

  1. Remove the Filter: Open your aircon unit’s front panel and carefully remove the filter.
  2. Wash the Filter: Rinse the filter with lukewarm water and gently scrub it with a soft brush. Avoid using hot water or harsh chemicals, which can damage the filter.
  3. Dry the Filter: Allow the filter to air dry completely before reinstalling it.

If the filter is damaged or dirty to clean, consider replacing it with a new one. The filter should be cleaned or replaced every three to six months, depending on usage and the environment.

How to Clean Your Aircon

Tip 3: Clean the Evaporator and Condenser Coils

The evaporator and condenser coils are crucial for the cooling process. Over time, they can accumulate dust and dirt, reducing efficiency and causing the aircon to work harder.

To clean the coils:

  1. Access the Coils: Remove the front panel of your aircon to access the evaporator coils. For the condenser coils, you may need to access the outdoor unit.
  2. Use a Coil Cleaner: Apply a commercial coil cleaner to dissolve any buildup on the coils. Follow the cleaner’s instructions for the best results.
  3. Brush Away Debris: Use a soft brush or cloth to remove any remaining dirt and debris from the coils gently.

Cleaning the coils at least once a year will help maintain your aircon’s efficiency.

Tip 4: Clear the Drainage System

The drainage system in your aircon unit is responsible for removing condensation. If the drain becomes clogged, water leakage can damage the unit.

To clear the drainage system:

  1. Locate the Drain Line: Find the drain line, usually a small pipe leading from the indoor unit to the outside.
  2. Check for Clogs: Use a wet/dry vacuum to suck out any clogs from the drain line. Alternatively, you can use a long, flexible brush to clear the blockage.
  3. Flush the Drain Line: Pour a mixture of water and bleach through the drain line to kill mold or mildew.

Keeping the drainage system clear prevents water damage and ensures efficient operation.

Tip 5: Clean the Blower Wheel

The blower wheel helps circulate air through your aircon unit. Dust and debris can accumulate on the blower wheel, reducing airflow and efficiency.

To clean the blower wheel:

  • Remove the front panel and any necessary covers to reach the blower wheel.
  • Clean the blower wheel with a soft brush or cloth to remove dust and debris.
  • Once the blower wheel is clean, reassemble the unit and ensure all components are securely in place.

Regular cleaning of the blower wheel helps maintain optimal airflow and cooling performance.

Aircon unit cleaning

Tip 6: Check and Clean the Aircon’s Exterior

The exterior of your aircon unit is essential when you intend to clean aircon unit. Because it can accumulate dust and dirt, especially if it is located outdoors. Use a damp cloth to wipe down the exterior of the aircon unit, removing any dust and dirt. 

Ensure the area around the outdoor unit is free from debris, plants, or other obstructions that could hinder airflow. Keeping the exterior clean helps ensure the unit operates efficiently and prolongs its lifespan.

Tip 7: Schedule Professional Maintenance

While regular cleaning can significantly improve your aircon’s performance, scheduling a professional aircon cleaning service at least once a year is also essential. A skilled technician like LS Aircon Servicing Singapore can perform a thorough inspection, identify potential issues, and provide necessary services like aircon chemical wash, aircon chemical overhaul, aircon repair, etc. This ensures your aircon remains in top condition and helps prevent costly breakdowns.


In conclusion, if you regularly clean aircon unit, it will keep running efficiently and extend its lifespan. Following these seven tips ensures your aircon provides reliable cooling and maintains good air quality. Caring for your aircon will save you money on energy bills and repairs and help you stay relaxed and comfortable in Singapore’s tropical climate.

Frequently Asked Questions

Generally, scheduling an aircon cleaning service for residential units every 3 to 4 months is a standard practice.
If you see significant dust on your aircon's surface, notice reduced cooling efficiency, hear rattling or straining sounds during operation, or detect unpleasant odors from the vent, and these are signs that your aircon needs attention.
Dust, dirt, and debris buildup on filters, coils, and other parts limits airflow, disrupting cooling. Consequently, the AC struggles to reach desired temperatures, increasing energy use and electricity costs.