Aircon servicing cost in Singapore runs about S$50 to S$70 for a single-unit general clean in 2026, dropping to roughly S$20 to S$30 per unit once you service three or more together. A one-off chemical wash sits around S$80 to S$150 a unit, a full chemical overhaul about S$130 to S$250, and a gas top-up anywhere from S$80 to S$200 depending on the refrigerant. Those are the sticker numbers everyone shops on. The figure that actually leaves your account is higher, because a GST-registered company adds 9 percent on top, and the cheapest per-unit rate almost always comes bundled inside a contract you pay upfront. This guide gives you the verified 2026 rates for every service tier, the nett-price math most price lists hide, and the point where a clean unit pays for itself on your electricity bill.
For a typical HDB flat with two or three wall units, a general service costs about S$60 to S$110 a visit as of June 2026, or roughly S$20 to S$30 per unit once you book them together. Service every three to four months if you run the aircon daily, and the yearly outlay lands near S$180 to S$330 before GST. That is the baseline. Chemical washes, overhauls and gas top-ups are heavier jobs you pay for only when a unit is genuinely clogged or under-cooling, not on every visit.
The two numbers that decide whether a quote is fair are the per-unit rate and whether it includes the 9 percent GST that has applied since 1 January 2024. A price list showing S$25 per unit from a GST-registered firm is really S$27.25 at checkout. Small on one visit, but it compounds across a year of quarterly cleans and a family of four wall units. Always ask for the nett all-in figure before you commit.
General servicing is the routine clean: washing the filters, wiping the fan coil and cover, clearing the drainage tray, checking the drainage pipe and testing that the unit cools. It is what keeps a healthy aircon healthy, and it is the cheapest thing on any menu. The per-unit price falls sharply the more units you clean in one visit, because the technician's travel and setup time is spread across the job rather than charged per call-out.
The table below reflects indicative one-off rates from active Singapore providers as of June 2026, before GST. A standalone single-unit visit is the worst value per unit; if you have several units, service them on the same trip. Households on a fixed schedule should also weigh this against a contract package, covered further down, which usually beats one-off pricing per visit.
| Units serviced | Typical total (S$) | Roughly per unit (S$) |
|---|---|---|
| 1 unit | 50 to 70 | 50 to 70 |
| 2 units | 60 to 85 | 30 to 43 |
| 3 units | 75 to 110 | 25 to 37 |
| 4 units | 90 to 130 | 23 to 33 |
| 5 units | 105 to 150 | 21 to 30 |
| 6 units | 120 to 170 | 20 to 28 |
Past the general clean sit the heavier jobs, and this is where a lot of money gets spent that did not need to be. A chemical wash is booked when the fan coil is grimy enough that a normal service will not restore airflow, or when the unit smells or leaks water. The technician flushes the coil and blower with a chemical solution on-site without fully dismantling the unit. A chemical overhaul goes further: the whole indoor unit is taken apart, every part is soaked and cleaned, and it is reassembled. Overhaul is for units that have been neglected for years or are badly mouldy, not a routine upgrade.
A gas top-up is a separate problem entirely. If a unit blows air but no longer cools, it usually needs refrigerant, and the price depends on the gas your system uses. Older units run on R22, most modern split units on R410a, and the newest inverter units on R32. Here is the catch worth knowing: refrigerant does not get used up. If a unit is low on gas, it has a leak, and topping it up without finding the leak means you pay again in a few months. Insist the technician locates the leak first.
The scope of each job differs, so line up quotes on the same job, not the same label. A cheap chemical wash that skips the drainage pipe is not cheaper than a dearer one that clears it. The ranges below are indicative Singapore market figures for June 2026, before GST.
| Service | Indicative price (S$) | When you actually need it |
|---|---|---|
| Chemical wash (non-dismantle) | 80 to 150 | Grimy coil, weak airflow, water leak or musty smell |
| Chemical overhaul (full dismantle) | 130 to 250 | Years of neglect, heavy mould, general clean no longer works |
| Gas top-up (R22, older units) | 80 to 130 | Unit runs but no longer cools; find the leak first |
| Gas top-up (R410a, modern units) | 120 to 160 | Same as above; refrigerant costs more than R22 |
| Gas top-up (R32, newest units) | 130 to 200 | Same as above; newest and priciest refrigerant |
| Condenser cleaning (outdoor) | 50 to 150 | Normal wash cheaper; chemical or steam dearer |
This is where the real saving lives. Booking service one visit at a time is convenient but the priciest way to keep an aircon clean. A yearly or quarterly contract locks in a lower per-visit rate, and providers commonly price these 15 to 30 percent below ad-hoc bookings because they get guaranteed repeat work and a fixed route.
Work a concrete case. Say a three-unit household pays S$90 a visit one-off. Four quarterly visits at that rate is S$360 a year. The same firm's quarterly contract might run around S$280 for the year, saving roughly S$80 plus the hassle of rebooking each quarter. The trade is that you usually pay some or all of it upfront and you are tied to one company for the year, so check what happens if their service slips. Treat that annual figure as a fixed line in your monthly budget rather than a surprise every three months.
One thing to watch: a contract only saves money if it matches how often you truly need service. Paying for a quarterly plan on a bedroom unit you switch on twice a week is worse value than a twice-yearly clean. Match the frequency to your usage, not to the salesperson's default. Do not confuse the contract price with the 9% GST that a registered company still adds on top of the package.
Servicing is not only a repair cost; it is an efficiency spend. A clean unit with clear filters and coils uses noticeably less power than a clogged one, because a dirty system has to run longer and harder to hit the same temperature. Industry estimates put the gap at roughly 15 to 20 percent of the aircon's energy use, and aircon is one of the biggest single line items on a Singapore household's power bill. If a family running two units heavily is spending, say, S$120 a month on the aircon portion, letting the units clog can quietly add tens of dollars a month you never see itemised. A S$60 general service that restores airflow can pay for itself within a couple of months on the electricity bill alone.
You can stretch the interval between paid services yourself. The National Environment Agency recommends setting the aircon to 25°C, since every degree lower can raise energy use by up to 10 percent, and rinsing the washable filters yourself every few weeks keeps airflow up between professional cleans. That habit is the cheapest efficiency move there is, and it delays the point at which a unit needs a paid chemical wash.
How often to book the professional depends on use. Manufacturers such as Daikin advise servicing roughly every three to six months. For a Singapore home running the aircon nightly, every three to four months is the sensible default; light users can stretch to every six months; heavy or dusty-environment users may need it every two to three months.
Most aircon overspending comes from three moves: paying single-unit rates when you could bundle, agreeing to a chemical wash or overhaul you did not need, and topping up gas without fixing the leak. Get a technician to diagnose before they upsell. A general service that fixes the problem is a fifth of the price of an overhaul, and a reputable firm will tell you a normal clean is enough when it is.
Compare quotes on the exact same scope, and get the total in writing with GST stated. Two S$100 chemical washes are not equal if one includes the drainage pipe and outdoor coil and the other does not. Ask what is covered, whether GST is included, and whether there is a warranty on the work. The same discipline you would apply to any home service, from house cleaning to a locksmith, applies here: the cheapest sticker rate is rarely the cheapest job.
Finally, do not let a hard-sell push you into a long contract on the spot. A good contract is worth it, but only after you have confirmed the per-visit nett price, the number of visits, and what happens if you want out. Sleep on any package that has to be signed today for the discount.
A one-off general service costs about S$50 to S$70 for a single unit, dropping to roughly S$20 to S$30 per unit when you clean three or more together. Chemical washes run S$80 to S$150 a unit and overhauls S$130 to S$250, all before the 9 percent GST a registered company adds.
For a home running the aircon daily, service every three to four months. Light users can stretch to every six months, while heavy users or dusty environments may need it every two to three months. Manufacturers such as Daikin advise roughly every three to six months, and rinsing the filters yourself in between helps.
A general service is enough for routine upkeep and keeps a healthy unit clean cheaply. Book a chemical wash only when the coil is grimy enough that normal cleaning no longer restores airflow, or when the unit leaks water or smells musty. A full overhaul is for units neglected for years, not a routine upgrade.
Refrigerant is not consumed during normal operation, so a unit that keeps running low on gas has a leak. Topping up without locating and fixing the leak means you pay for gas again within months. Insist the technician finds the leak first before charging you for another top-up.
This is general financial information for Singapore, not personal financial advice. Figures change — verify current rates against the official sources above before acting. See our full disclaimer.