Servicing Guide · Singapore · Updated July 2026
How Often Should You Service Your Aircon in Singapore?
The short answer: every 3–4 months if it runs daily, every 6 months for lighter use. Here’s the full schedule by usage — and how to tell when you’re overdue.
The schedule, by how you use it
There’s no single right answer — it depends on how many hours the unit runs. Find your situation below:
Daily use
Every 3–4 months
Bedroom aircon running every night
This is most Singapore homes. Nightly use in our humidity means dust and mould build up fast.
Regular use
Every 6 months
Living room aircon, a few hours a day
Twice a year keeps the unit healthy if it isn’t running through every night.
Light use
Once a year
Guest room or study, weekends only
Even a rarely used unit needs a yearly clean — mould grows on the damp coil whether or not you switch it on often.
Office / commercial
Every 2–3 months
Shop or office running 8–12 hours daily
Long daily hours plus more people and dust means a shorter interval.
Not sure what a service actually involves? See what happens during a standard aircon servicing — the full step-by-step.
Why aircons in Singapore need servicing more often
If you’ve read overseas advice saying “service your aircon once a year”, ignore it here. That advice is written for countries where the aircon runs three months a year. In Singapore, it runs all twelve.
There’s a second reason: humidity. When your aircon cools the room, moisture from the air condenses on the cooling coil inside the unit — the same way water beads on a cold drink. That coil is wet for hours every day, and a wet surface in a warm climate is exactly where mould grows and dust sticks. The dust and mould layer builds up month after month until it blocks airflow, breeds smells, and clogs the drain.
Regular servicing simply resets that build-up before it causes problems — weak cooling, water leaks, musty smells, and higher electricity bills.
Signs you’re overdue
The calendar is a guide, but the aircon itself will tell you. Any of these means it’s time, regardless of when the last service was:
Air is weaker or less cold than before
Dust on the filters and cooling coil blocks airflow, so the unit works harder and cools less.
Musty or sour smell when it starts up
That smell is mould growing inside the unit — it blows into the air you breathe.
Water dripping from the indoor unit
The drain is clogging up. Left alone, it overflows onto your wall or floor.
Electricity bill creeping up
A dirty aircon uses noticeably more power to produce the same cooling.
Louder than it used to be
Dust on the fan makes it work harder and rattle — and wears it out faster.
Got one of these problems now? Start with our troubleshooting guides to see what it means and what fixes it.
What happens if you skip servicing?
Nothing dramatic at first — which is exactly why it’s easy to put off. But the build-up compounds, and the costs escalate in stages:
Months 4–8: it costs you quietly
Cooling weakens and the unit runs longer to hit the same temperature, so your electricity bill rises. Most people don’t notice — they just set it a degree colder.
Around a year: it costs you a deep clean
Once mould cakes onto the coil and the smell sets in, a normal service (from $45/unit) often can’t fully fix it — you’re looking at a chemical wash instead, at roughly double the price. A clogged drain can also start leaking water onto your wall or furniture.
Years of neglect: it costs you the aircon
A unit that constantly runs hot and choked wears out its major parts years early. Replacing an aircon costs many times more than every service you skipped, combined.
For the full breakdown of what each service type costs, see the aircon servicing cost guide.
Sticking to the schedule: contract vs one-time
Knowing the right frequency is one thing; actually remembering every 4 months is another. That’s the real case for a yearly maintenance plan — the visits are scheduled for you, and the per-visit price is lower than booking one-off.
2 visits / year
$85/yr for 1 unit
≈ $42.5 per visit
3 visits / year
$125/yr for 1 unit
≈ $41.67 per visit
4 visits / year
$165/yr for 1 unit
≈ $41.25 per visit
One-time servicing starts at $45/unit, and multi-unit homes cost less per unit — see the full price list.
Common questions
How often should I service my aircon in Singapore?
Every 3 to 4 months if it runs daily (like a bedroom unit used every night), every 6 months for lighter daily use, and at least once a year even for a rarely used unit. Singapore’s year-round heat and humidity make aircons dirty faster than in cooler, drier countries.
My aircon is new — does it still need servicing?
Yes. A new aircon starts collecting dust and moisture from day one, and most manufacturer warranties require proof of regular servicing to stay valid. Start the normal schedule after the first 3–6 months of use.
I clean the filters myself — is that enough?
Washing the filters monthly is a great habit and genuinely helps, but it only covers the first layer. Dust and mould also build up on the cooling coil, the fan, and in the drain — parts you can’t reach without opening up the unit. That’s what a professional service cleans.
Do inverter aircons need less frequent servicing?
No. Inverter models save electricity, but their coils and filters collect dust and mould at the same rate as any other aircon. Follow the same schedule.
How often does an aircon need a chemical wash?
A chemical wash is a deep clean, not a routine one. If you keep up with regular servicing, most units only need one every 1–2 years — or when there’s a persistent musty smell, visible mould, or weak cooling that a normal service doesn’t fix.
When is the best time to service my aircon?
Just before you need it most — many people service before the hotter months of April to July, or before Chinese New Year when hosting guests (booking early matters; that period fills up fast). But the honest answer is: whenever it’s due. A fixed schedule beats a perfect season.
Overdue for a service?
Thorough servicing from $45/unit, same-day and island-wide. Price confirmed before we start.