How often to service aircon in Singapore

For a household in Singapore, roughly every three months. Singapore has a tropical rainforest climate with high humidity year round, and that moisture is what fouls the fan coil and blower wheel faster than in a temperate climate.

What actually happens

• Every 3 months for units in daily use. Bedroom units running nightly foul fastest.
• Occasional-use units can stretch longer, though the tray still holds moisture between uses.
• If the smell returns within weeks of a service, the unit likely needs a chemical wash rather than more frequent general servicing.

Questions people ask

Is three months a real interval or an upsell?

It reflects how fast a fan coil fouls in a tropical rainforest climate with high year-round humidity. A unit used a few hours a week can go longer; one running nightly generally cannot.