Confused about aircon servicing options in Singapore? Honest breakdown of chemical wash vs overhaul — costs, when each is needed, and how to pick.
Every HDB homeowner in Singapore eventually faces the same question: “Should I just do a normal service, or do I need a chemical overhaul?” The short answer: it depends on how your aircon is behaving and when it was last serviced.
A standard service cleans filters, checks drainage, and tests basic operation. Cost: $60–$90 per unit.
Best for: annual maintenance, mild cooling loss, and preventing mould build-up.
The technician fully opens the unit to clean the cooling coil, fan, and internal flaps with chemical solution. Cost: $120–$180 per unit.
Best for: strong odours, poor cooling despite filter cleaning, water leakage, or 2+ years since last overhaul.
Many aircon service companies push quarterly packages. For most Singapore homes, professional service every 6 months + monthly filter vacuuming is enough. Going more often mostly benefits the company’s revenue, not your machine.
Older HDB units (pre-2010) often have narrower drainage paths and get choked faster. If you live in a mature estate with high humidity, you may need an overhaul earlier — usually once every 3–4 years.