An aircon chemical wash Singapore homeowners can actually trust — when your aircon smells, leaks, or just won't cool the way it used to, a normal service won't fix it. A chemical wash deep-cleans the fan coil with specialised chemicals to break down mould, sludge and bacteria. Flat $80 per unit — full general service included.
When You Actually Need It
If any of these match your unit, a regular service won't cut it. The grime is too deep — only chemical treatment will reach it.
That damp, sour or "old gym bag" smell when the aircon turns on. Mould and bacteria are growing inside the fan coil.
Drainage is clogged with bio-sludge that water alone can't clear. Chemical treatment dissolves the buildup.
The coil and blower are coated in grime, choking airflow and forcing the unit to work harder for less cooling.
Black streaks around vents or on the swing flap mean mould has spread beyond what surface cleaning can fix.
If your last chemical wash was over a year ago — and the unit runs daily — buildup is almost certainly the issue.
A clogged coil works harder to cool the same room. You're paying for the dirt — chemical washing restores efficiency.
Not sure if your unit needs it? WhatsApp us a photo and we'll tell you honestly — even if the answer is "save your money, just do a normal service."
General Service vs Chemical Wash
Same dismantle, same jet wash. The chemical wash adds one extra step — chemical treatment of the fan coil — for when grime won't come out with water alone.
| General Service | Chemical Wash | |
|---|---|---|
| Floor & furniture protection | ✓ | ✓ |
| Full unit dismantle | ✓ | ✓ |
| Pressure-jet wash of all parts | ✓ | ✓ |
| Drainage pipe vacuumed | ✓ | ✓ |
| Condenser unit check | ✓ | ✓ |
| Gas pressure inspection | ✓ | ✓ |
| Chemical treatment of fan coil | ✗ | ✓ |
| Removes deep mould & bacteria | ✗ | ✓ |
| Fixes musty smell | ✗ | ✓ |
| Price per unit | From $20 | $80 |
The Lion City Process
Same opening 10 steps as a general service. The chemical-specific steps are highlighted — that's what makes the difference.
Floor sheets and furniture protection go down first. Reviews praise our team for keeping homes spotless.
We power on, check airflow, listen for noises and identify any pre-existing issues.
Front cover, swing flap and filter housing carefully removed. We know the right clip placement for every brand.
The drainage tray is removed and inspected — this is where most "smelly aircon" problems start.
The fan roller (blower wheel) comes out. This step alone is what most "cheap servicing" companies skip entirely.
A large catch tray goes under the in-place fan coil to contain the chemical solution and rinse water — no spills, no mess on your wall.
Aircon-grade chemical agents are applied directly to the coil fins. The chemicals penetrate where water can't reach.
The solution sits on the coil long enough to dissolve mould, sludge, bacteria and oxidised residue. Patience matters here.
The dissolved grime gets blasted out with a high-pressure jet. The water comes out black — guaranteed.
Multiple rinse cycles to make sure no chemical residue stays on the coil. This protects the unit long-term.
No reassembly until everything is properly dry — wet reassembly causes electrical issues and leaks.
Drainage line vacuumed clear of dissolved sludge. This is critical — chemical wash often loosens months of buildup.
Everything goes back together properly. Unit is run, airflow checked, cooling confirmed cold — before we leave.
We always check refrigerant pressure on chemical wash visits. If gas is low, we'll quote a top-up — only if you agree.
Transparent Pricing
Chemical wash is flat-rate per unit, regardless of brand, size or how dirty it is. What you see is what you pay.
Price excludes 9% GST · Indoor fan coil only
For multiple units, total = $80 × number of units
Island-Wide Coverage
HDB flats, condos, landed properties and small commercial units — anywhere in Singapore. Same-day available in most areas.
Real Customers · Real Reviews
Verified Google reviews from chemical wash customers.
"Engaged Lion City for a chemical wash. Punctual, professional and very thorough. Even said chemical wash wasn't needed next round — should just do a normal service. Aircon now much cooler."
"Did chemical wash for my AC unit that was leaky. Cleaned it thoroughly and conscientiously with a high-pressure jet. The AC is now sparkly clean and looks like new."
"Took out every removable part, used pressure washer to remove all the trapped dirt and dust — you could literally see how clean everything became. Highly recommended."
"Took the chemical cleaning. They were very careful of my furniture as we have cupboard blocking. Did a super good job for all 3 units."
"Excellent ethical company. Very confident in their work and did an excellent job. Signed a year contract with them."
"Finally an honest aircon company that does not overcharge. My 7-year-old AC is good as new again. Highly recommended."
Common Questions
Quick answers to what most Singapore homeowners ask before booking.
WhatsApp us for the fastest reply, call directly, or fill in the quick form below — same-day appointments available across Singapore.