Aircon Chemical Overhaul:
What, When & Cost
- 📅 June 4, 2025
- ✍️ By City Cooling Management
- 🏷 Chemical Overhaul · Aircon Servicing
If your aircon isn’t cooling as well as it used to, is leaking, or giving off a musty smell, a basic cleaning won’t suffice. You may need a chemical overhaul, especially if the problem lies deep inside the unit.
This guide covers everything you need to know about aircon chemical overhaul in Singapore, including when to do it, how it compares to a chemical wash, and the associated costs, as provided by City Cooling SG.
$130
10+yr
Annual
3
What Is an Aircon Chemical Overhaul?
An aircon chemical overhaul is a deep cleaning service where the indoor unit is fully dismantled. Components such as the fan coil, blower, and drain pan are removed, soaked, and scrubbed using chemical solutions to remove grime, mould, and bacteria buildup. This process restores the aircon’s efficiency and improves the air quality in your space.
By comparison, a chemical wash does not involve dismantling. It only cleans the surface areas of the coil and may not effectively reach deep-seated dirt or thoroughly address internal issues.
Comparison: Basic Cleaning vs. Chemical Wash vs. Chemical Overhaul
Here’s a breakdown of what each service includes:
| Usage Level | Basic Cleaning | Chemical Wash | Chemical Overhaul |
|---|---|---|---|
Filter cleaning |
✅ |
✅ |
✅ |
Coil cleaning |
❌ |
✅ (without dismantling) |
✅ (fully dismantled & soaked) |
Mold & bacteria removal |
❌ |
✅ (surface only) |
✅ (thorough elimination) |
|
Fan blower cleaning |
❌ |
❌ |
✅ (fully removed & cleaned) |
Drain pipe flushing |
❌ |
❌ (or minimal) |
✅ (deep flushing) |
Disassembly |
❌ |
❌ (partial, if any) |
✅ (complete disassembly) |
Suitable for |
Light maintenance |
Moderate dirt or odor |
Severe dirt, odor, inefficiency, leakage |
Signs You Might Need a Chemical Overhaul
Watch out for these signs that indicate a chemical overhaul is due:
- Aircon or piping condensation
- Weak or no cooling
- Leaking water
- Rusty components
- Musty or unpleasant odours
- Unusual noises (buzzing, rattling)
- Ice forming on coils
- Increased electricity bills
These issues often stem from internal blockages or buildup that simple cleaning cannot resolve.
When Regular Cleaning Isn't Enough
Basic servicing works for general upkeep, like filter washing and brushing accessible parts. But for deeper issues caused by dirt, mould, or clogged drainage, a chemical overhaul is more effective.
What's included in an overhaul:
- Full disassembly of the indoor unit
- Soaking and scrubbing of fan coil, blower, and drain pan
- Deep drain pipe flushing
- Use of safe, professional-grade chemicals
- Manpower and post-cleaning system test
How Often Should You Do a Chemical Overhaul?
For residential use, it’s recommended to do a chemical overhaul once a year. If your aircon is used frequently or in a dusty environment, consider doing it every 6–12 months to maintain performance and hygiene.
📖
Heavy-use environments (8+ hours daily, dusty areas) benefit from more frequent overhauls to prevent buildup and maintain optimal airflow.
Long-Term Benefits
- Fewer breakdownsand lower repair costs
- Improved cooling performance and airflow
- Lower energy bills due to better efficiency
- Elimination of mould and allergens = cleaner air
- Longer lifespan for your aircon unit
Transparent Pricing with City Cooling SG
| Service | Price |
|---|---|
|
Chemical Overhaul (9–12K BTU) |
$130 per unit |
|
Chemical Overhaul (18K BTU) |
$160 per unit |
|
Chemical Overhaul (24K BTU) |
$180 per unit |
|
Chemical Wash (no dismantle) |
$85 per unit |
|
Chemical Wash (condenser) |
$120 per unit |
*Final pricing is subject to GST.
Why Choose City Cooling SG for Your Overhaul?
✅
Experienced Technicians
Over 10 years of experience with all major aircon brands in Singapore.
💵
Transparent Pricing
No hidden charges. What you see is what you pay — clear breakdowns for all services.
🧪
Quality Chemicals Used
Non-corrosive, eco-friendly chemicals that are safe for your family and pets.
⭐
Trusted by Thousands
From HDB flats to condos to commercial buildings, trusted by customers islandwide.
Why Choose City Cooling SG for Your Overhaul?
Experiencing poor airflow, leaks, or unusual odours? Contact us and let our team handle it with a professional chemical overhaul that gets your aircon running like new.
Get StARTED
Get Your Aircon Running Like New
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