Aircon servicing & cleaning cost in Singapore

Wondering what aircon servicing cost in Singapore actually looks like in 2026? A standard aircon cleaning is cheap per unit — on recent RK E&C jobs it works out to about $25 per unit, so a typical 4-unit HDB flat comes to around $100 for the visit. Chemical work costs more, and if your aircon is leaking water or blowing weak, cool air, you may also need drainage clearing or a gas top-up. This guide breaks down the aircon cleaning price in Singapore, how often to service, why an aircon leaks, and when refrigerant needs topping up.

How much does aircon servicing cost in Singapore?

Pricing is by unit, not by hour, and almost every company applies a minimum trip charge. That is why servicing every unit in one visit is far cheaper per unit than calling someone out for a single blower. The table below shows recent RK E&C jobs alongside the indicative Singapore market range — treat the ranges as a guide and always confirm a fixed quote before the visit.

Job	Indicative price (SGD)	Notes
Standard aircon cleaning (per unit)	≈ $25 / unit	Recent RK E&C job: 4 units = $100
Leaking unit — diagnose, service & gas top-up if required	≈ $60 – $150 / unit	Gas top-up adds cost on top
Chemical wash (per unit)	$60 – $120 / unit	For weak cooling or mouldy smell
Chemical overhaul (per unit)	Quote on site	Deepest service; badly choked units
Gas (refrigerant) top-up	Added on top	Priced after pressure is checked

The numbers above are anchored to real RK E&C jobs and framed as indicative — your final price depends on how many units you have, their condition, and whether the work is a simple clean or a chemical treatment with gas. The single biggest way to save: bundle all your units into one appointment so the trip charge is spread across the whole job.

General cleaning vs chemical wash vs chemical overhaul

These three are often confused, but they are very different levels of work — and priced accordingly.

General cleaning (routine maintenance)

The everyday service. The technician vacuums and washes the filters, wipes the coils and fan blades, clears the drainage pipe and tray, and checks the gas pressure. This keeps airflow and cooling steady and is what most homes need on a regular cycle. It is the $25-per-unit tier on recent jobs.

Chemical wash (deeper clean)

When general cleaning no longer restores cooling — or the unit smells musty — a chemical wash is the next step. Chemical solution is applied to the fan-coil parts to strip built-up dirt, mould and grime that plain wiping cannot reach. It is used when a unit is choked, cooling weakly, or has been neglected for a long time.

Chemical overhaul (the deepest service)

The most thorough option. The fan-coil unit is largely dismantled — blower wheel, coil, tray and casing removed and cleaned individually — then reassembled. It is reserved for badly choked units, older systems, or a flat being prepared for sale. It costs the most and is quoted on site.

How often should you service your aircon?

Singapore's climate is hot and humid year-round, so aircons work hard and clog faster than in cooler countries. As a rough guide:

• General cleaning every 3–4 months for a normal home keeps filters and coils clear.
• More often if you run the aircon heavily, live near a dusty road, or have just finished renovation.
• Chemical wash once or twice a year, or whenever a general clean stops restoring the cold air.

Skipping servicing is a false economy — a choked unit runs longer to reach the same temperature, uses more electricity, and eventually leaks or fails. Singapore's National Environment Agency (NEA) also recommends keeping cooling systems and filters clean for better indoor air quality, since a dirty fan-coil unit circulates dust and can harbour mould.

Why is my aircon leaking water?

A dripping aircon is one of the most common call-outs we get, and it is almost always a drainage problem, not a broken unit.

• Choked drainage pipe or tray. Your aircon produces condensation, which drains away through a pipe. Over time dust, dirt and algae block that pipe or the tray under the coil — so water backs up and drips out of the fan-coil unit onto your floor or wall.
• Dirty evaporator coil. A heavily fouled coil can cause condensation to form and drip in the wrong place instead of running into the tray.
• A slightly tilted unit. If the fan-coil unit is not level, water runs to one side and overflows rather than draining.

The fix during a proper service is to clear and flush the drainage and clean the coil so condensation drains normally again. If the leak comes back quickly, the pipe or tray may need deeper cleaning, or the unit may need realigning — worth flagging when you book so we bring the right kit.

Weak cooling and gas (refrigerant) top-up

If your aircon switches on and the fan runs, but the air is only mildly cool despite clean filters, the system may be low on refrigerant — the "gas" that carries heat out of the room. A top-up restores the pressure and the cold air.

One important point: refrigerant is a sealed loop and does not get "used up" in normal running. So if the gas is low, there is usually a leak somewhere in the system. A good technician traces and addresses the leak rather than just refilling — otherwise the fresh gas escapes again and you are back to weak cooling in a few weeks. A gas top-up is an added cost on top of the servicing visit, and it is only quoted once the pressure has been checked on site.

Persistent weak cooling can also point to a choked coil that needs a chemical wash, so it is worth having the unit inspected rather than assuming it is only gas.

Signs your aircon needs servicing now

• Water dripping or staining below the fan-coil unit
• Air is running but the room no longer gets properly cold
• A musty or sour smell when the aircon starts up
• Weak airflow, or ice forming on the unit
• Noticeably higher electricity bills for the same usage
• It has simply been more than 3–4 months since the last service

HDB and condo — what to know

For routine servicing, cleaning, drainage clearing or a gas top-up inside your flat, you do not need an HDB permit — permits apply to installing a new system or works affecting the external wall and ledge, not maintenance. Two practical notes:

• Access to all units. Clear a little space under each fan-coil unit so the technician can lay down sheets and reach the drainage.
• Noise hours. Keep any drilling or noisier work within HDB's permitted hours to stay on good terms with neighbours.

Getting it done by RK E&C

RK E&C is a Singapore-registered renovation and handyman company (UEN 202442767D) that services and cleans aircons in HDB flats and condos island-wide — general cleaning, chemical wash, leak and drainage fixes, and gas top-ups. We can do it as a standalone job or alongside other handyman and renovation work in the same visit. Related guides: fixing a leaking tap in your HDB and our HDB renovation cost breakdown. You can also browse all our guides.

Tell us how many units you have and your postal code, and we'll quote you — usually the same day.