Run your aircon 8–12 hours daily in Singapore? Then you need a maintenance schedule. Many owners service only when breakdowns happen – but prevention saves money.
General Rule of Thumb
- Normal use (nightly): Service every 3 months
- Heavy use (24/7, home office): Every 2 months
- Light use (weekends only): Every 6 months
Why Singapore Demands More Frequent Servicing
- High humidity → mould and algae in drain pipes within weeks.
- Dust and haze (e.g., from Indonesia) clogs filters faster.
- Hard water in some areas leaves mineral deposits on coils.
What Regular Servicing Includes (30–30–60/unit)
- Wash/change air filters
- Clean evaporator coil with coil cleaner
- Clear drain pipe (blow or vacuum)
- Check gas pressure
- Clean blower wheel
- Inspect electrical connections
Chemical Wash vs. Chemical Overhaul
| Service | What it does | Frequency | Cost |
|---|---|---|---|
| Regular servicing | Surface cleaning | 3–4x/year | 120–240 (4 units) |
| Chemical wash | Dismantle, chemical soak of coil | Once a year | 80–120/unit |
| Chemical overhaul | Full strip down, deep clean all parts | Every 2–3 years | 150–250/unit |
Signs You’ve Waited Too Long
- Weak airflow
- Musty smell when AC starts
- Unit takes >20 mins to cool room
- Water leaking (see our previous post)
Seasonal Tip
Service your aircon in February and October – before the hottest months (March–May & August–October) – to avoid peak-demand breakdowns.
Conclusion
Set a calendar reminder every 3 months. A well-maintained aircon uses up to 30% less electricity – which pays for the servicing itself.
