Aircon Service · Singapore
Aircon Chemical Wash in Singapore
From $110 per unit. In-place chemical cleaning that clears mould, bacteria, and stubborn dirt — restoring cooling and removing musty smells.
How much does an aircon chemical wash cost?
An aircon chemical wash in Singapore costs from $110 per unit for a single unit, dropping to about $102 per unit on multi-unit jobs (6 units is $610). It’s a deep chemical clean of the cooling coil and drainage that filter-level servicing can’t reach — the right fix for a musty smell, weak cooling, or a unit that hasn’t been deep-cleaned in over a year. The price depends only on the number of units, and we confirm it upfront with no hidden fees.
What is an aircon chemical wash?
Chemical wash is a deeper clean than general servicing. The technician uses specialised chemical solutions to break down and flush out dirt, mould, and bacteria from the cooling coil, drainage tray, and other internal surfaces — areas that filter-level cleaning cannot reach. Some companies call the same service an aircon chemical cleaning or a deep clean — different names, same job.
The major components stay mounted in place during a chemical wash, which keeps it faster and more affordable than a chemical overhaul. It is the right choice when your aircon has started to smell, drip, or cool less effectively despite regular servicing — but the unit is not so neglected that it needs full disassembly.
What a chemical wash involves, step by step
A typical single-unit wash takes about 45–60 minutes. Here’s what we do on-site.
- 1Inspect the unit and lay protective sheeting to catch the run-off.
- 2Open the unit — remove the front cover and filters to reach the cooling coil and drain tray.
- 3Apply chemical solution to the coil and tray to dissolve mould, bacteria, and built-up grime.
- 4Agitate and flush the coil so the loosened dirt and chemicals wash out.
- 5Clear and flush the drain tray and pipe so condensation drains freely again.
- 6Reassemble the unit and run it to confirm cooling and drainage are restored.
When you need a chemical wash
Any one of these is a sign the indoor unit has dirt built up beyond what general servicing removes.
Musty or sour smell
A sour, damp odour every time the aircon runs is the clearest sign of mould on the cooling coil.
Weak cooling despite regular servicing
When general servicing no longer restores cooling, dirt has built up deeper than filter-level cleaning can reach.
Visible mould on the fan coil
Black or dark spots on the visible fan coil surface mean mould has spread across the unit interior.
Water dripping from the indoor unit
A clogged drainage path forces condensation to overflow from the front of the unit instead of draining away.
Over a year since the last deep clean
Even without symptoms, units used daily in Singapore’s humidity benefit from a deep clean every 1–2 years.
Chemical wash vs normal servicing vs overhaul
Not sure if you need a wash or just a service? Here’s how the three compare.
Normal Servicing
from $45Routine surface clean — filters, front panel, and a drainage flush — every 3–4 months.
- • Best for: regular upkeep, no symptoms
- • Keeps a healthy unit running well
- • See general servicing →
Chemical Wash
from $110In-place chemical clean of the coil and drainage. Components stay mounted.
- • Best for: musty smell, mild drip, moderate cooling loss
- • Faster and lower cost than an overhaul
- • The recommended deep clean for most cases
Chemical Overhaul
from $150Full disassembly — housing, coil, blower wheel, and drain tray each cleaned individually.
- • Best for: severe clog, persistent smell, long-neglected units
- • Most thorough clean without replacing parts
- • See chemical overhaul →
Chemical wash pricing
The price depends only on how many units you wash — more units cost less per unit. The grey figure is the price per unit. All prices in SGD.
| Units | Price | Per unit |
|---|---|---|
| 1 unit | $110 | $110 |
| 2 units | $210 | $105 |
| 3 units | $310 | $103.33 |
| 4 units | $410 | $102.50 |
| 5 units | $510 | $102 |
| 6 units | $610 | $101.67 |
What the price includes
- • Chemical cleaning of the cooling coil
- • Drain tray and pipe flush
- • Blower wheel and fan clean
- • Filter and front-panel wash
- • Mould and bacteria treatment
- • Cooling and drainage test before we leave
Notes
- • Additional units beyond 6: +$95 each
What affects the price
Chemical wash is priced per unit, but a few things decide which service — and price — is right for you.
Number of units
The main driver. Each indoor unit is washed individually, and the per-unit price drops the more you do in one visit.
Unit type
Wall-mounted units are the standard rate. Ceiling-cassette and ducted units take longer to open and clean, so they cost a little more.
Condition and neglect
A unit left for years may be too clogged for an in-place wash and need a chemical overhaul instead — we tell you on-site before any work.
Access and height
Units in tight spots or mounted high take longer to dismantle and refit safely, which can affect the time on-site.
Chemical wash — FAQs
How much does an aircon chemical wash cost?
What is the difference between chemical wash and chemical overhaul?
Is aircon chemical cleaning the same as chemical wash?
How often do I need a chemical wash?
Will chemical wash fix my musty aircon smell?
Is an aircon chemical wash worth it?
How long does a chemical wash take?
Are the cleaning chemicals safe?
Do I need a chemical wash or just normal servicing?
Which areas in Singapore do you cover?
Problems this fixes
Aircon smells bad
Musty or sour odour when it runs — mould and bacteria on the coil and drainage tray.
Aircon leaking water
Dripping from the indoor unit — almost always a blocked drainage path or a frozen coil.
Aircon not cold
Runs but won’t blow cold air — usually low gas, a clogged coil, or a dirty condenser.
Other aircon services
Aircon Cleaning
General service, chemical wash, or overhaul — depending on how dirty the unit is. From $45 per unit.
General Servicing
Routine maintenance to keep cooling strong. From $45 per unit.
Servicing Packages
Recurring maintenance contracts — scheduled visits from $85 per year.
Chemical Overhaul
Full disassembly deep clean for neglected units. From $150 per unit.
Gas Top-Up
Restore weak cooling caused by low refrigerant. From $90.
Condenser Cleaning
Outdoor unit cleaning to recover cooling capacity. From $50.
Aircon Repair
Diagnosis and repair of leaks, noise, and cooling faults. From $50.
Chemical wash across Singapore
We provide chemical wash island-wide — same transparent pricing, no out-of-area surcharge. Find your area:
Book your chemical wash today
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