Aircon Service · Singapore
Aircon Chemical Overhaul in Singapore
From $150 per unit. Full disassembly deep clean — the most thorough clean possible without parts replacement.
What is an aircon chemical overhaul?
Chemical overhaul is the most thorough clean your aircon can get without parts replacement. We fully disassemble the indoor unit — housing, evaporator coil, blower wheel, and drainage tray are removed and cleaned individually with chemical solutions that break down years of mould, bacteria, and stubborn dirt.
The unit is then reassembled, refitted, and tested. It is the right choice when a chemical wash alone will not be enough — heavily neglected units, persistent odour or drip problems, or thick visible buildup on the fan coil.
When you need a chemical overhaul
Overhaul is the next step when chemical wash will not get the unit fully clean.
Persistent smell after a chemical wash
If a recent chemical wash did not clear the odour, mould has likely penetrated deeper than in-place cleaning can reach.
Unit not deep-cleaned in many years
Years of dust, grease, and biofilm accumulate well past what an in-place wash can dissolve.
Heavy visible mould or grime
When the fan coil and blower wheel are visibly thick with buildup, every component needs to come off for proper cleaning.
Severe cooling loss
A heavily clogged coil cannot transfer heat properly — overhaul restores airflow and cooling capacity to near-new.
Recurring drainage problems
If the unit keeps dripping despite servicing and wash, the drainage path likely needs to be opened up and flushed at every joint.
Just bought or inherited the unit
Starting fresh with an overhaul gives you a known clean baseline going forward, especially if service history is unclear.
Chemical overhaul vs chemical wash
Overhaul goes further than wash — and is the right choice when wash alone will not get the unit clean.
Chemical Wash
from $110In-place cleaning with chemical solutions. Internal components stay mounted.
- • Best for: musty smell, mild drip, moderate cooling loss
- • Faster, lower cost — most cases only need this
- • See chemical wash details →
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 possible without parts replacement
- • Recommended when a wash will not be enough
Chemical overhaul pricing
Prices below are for 9,000 and 12,000 BTU units. Multi-unit jobs are more economical per unit.
| Units | Price |
|---|---|
| 1 unit | $150 |
| 2 units | $280 |
| 3 units | $390 |
| 4 units | $480 |
| 5 units | $550 |
Additional charges
- • +$40 for 18,000 BTU units
- • +$90 for 24,000 BTU units
- • Ceiling cassette and ducted units cost extra
Chemical overhaul — FAQs
How much does an aircon chemical overhaul cost?
What is the difference between chemical wash and chemical overhaul?
When should I choose overhaul over chemical wash?
How long does a chemical overhaul take?
Which areas in Singapore do you cover?
Book your chemical overhaul today
Same-day service available. Get a quote in minutes on WhatsApp.