Servicing Guide · Singapore · Updated July 2026
What Happens During a Standard Aircon Servicing?
Regular servicing keeps your aircon running efficiently in Singapore’s heat and humidity — but what exactly does a technician do? Here’s the full step-by-step, so you know precisely what you’re paying for.
Initial inspection
- Check the indoor and outdoor units for visible damage
- Look for error codes on the display panel
- Listen for unusual sounds during operation
- Note any issues you’ve reported
Switching off and preparing the unit
- Turn the aircon off and disconnect power for safety
- Lay protective covers over the floor and furniture below the unit
- Remove the front panel and filters
Filter cleaning
- Remove the air filters from the indoor unit
- Vacuum or brush off dust and debris
- Wash the filters with water and a mild detergent
- Leave them to dry while the rest of the work continues
Cleaning the evaporator (cooling) coils
- Vacuum the coils to remove dust, grime, and mould build-up
- Gently brush off any stubborn deposits
- This restores cooling efficiency and air quality
Cleaning the drainage tray and drain pipe
- Clean the drainage tray beneath the coils
- Remove algae, slime, and debris
- Flush the drain pipe so water flows freely
- This prevents water leakage and musty odours
Cleaning the fan blower
- Clean dust build-up off the blower fan blades
- This restores proper airflow and reduces noise
- A clean blower also improves energy efficiency
Checking the outdoor condenser unit
- Inspect the condenser coils for dirt build-up
- Clear debris around the unit for proper ventilation
- Check the outdoor fan is running correctly
Checking refrigerant levels
- Check for signs of a refrigerant (gas) leak
- Measure gas pressure if cooling issues are reported
- Recommend a gas top-up if levels are low (an additional service)
Reassembly and testing
- Reassemble all components
- Power the unit on and test it
- Verify proper cooling and airflow
- Check temperature readings for optimal performance
Final inspection and recommendations
- Clean up the work area
- Give honest feedback on the unit’s condition
- Recommend any additional services only if genuinely needed
- Answer any questions you have
A standard service is a thorough clean and health check. If the unit is heavily soiled, smells musty, or the coil is caked with mould, a chemical wash goes deeper; low cooling may also need a gas top-up. Persistent water dripping usually traces back to the drainage — see our leaking-water guide.
How often should you service your aircon?
For most Singapore households, servicing frequency depends on how heavily the aircon is used:
Light usage
Once a year
Regular usage
Twice a year
Heavy usage
Three to four times a year
Regular servicing extends your aircon’s lifespan, keeps energy use down, and protects your indoor air. See our servicing cost guide for what each service type costs.
Due for a service?
Thorough servicing from $45/unit, same-day and island-wide. Price confirmed before we start.