Quick Answer
Standard aircond servicing (RM90, 45-75 mins) uses pressurised clean water to clear routine dust every 3 to 4 months. A chemical wash (RM150, 90-120 mins) adds fin-safe alkaline coil cleaner and deeper dismantling to dissolve grease, heavy mould, and stubborn leaks on neglected units.
Why Homeowners Often Feel Unsure Which Option to Pick
Some contractors push every customer toward an expensive chemical wash regardless of unit condition. Our rule of thumb is straightforward: if your unit was serviced within the past 4 to 6 months and runs in a clean bedroom, RM90 standard servicing is all you need.
However, once cooking grease from an open condo kitchen or a year of damp biofilm seals the inner rows of the evaporator fins, water alone bounces off the surface without restoring core heat exchange.
Coil Safety: Corrosive Acid vs Formulated Alkaline Cleaner
Homeowners rightly worry about harsh chemicals corroding delicate blue-fin or gold-fin coatings. Fin damage occurs when unbuffered industrial acid is sprayed and poorly rinsed.
We exclusively use HVAC-formulated alkaline coil cleaner diluted to manufacturer specs to lift organic grime and grease safely, followed by thorough clean-water flushing until runoff is completely neutral.
Side-by-Side Comparison: Standard Servicing vs Chemical Wash
| Feature | Standard Servicing | Chemical Wash |
|---|---|---|
| Price (1.0 - 1.5 HP) | RM90 per unit | RM150 per unit |
| Price (2.0 HP / 2.5 HP+) | RM110 / RM130 per unit | RM180 / RM220 per unit |
| Job duration | 45 - 75 mins | 90 - 120 mins |
| Cleaning agent | Pressurised clean water | Fin-safe HVAC coil solution + clean water flush |
| Disassembly depth | Front cover & mesh filters | Housing, accessible tray & deep blower-blade scrub |
| Musty smell & grease removal | Light surface dust only | Strips heavy biofilm, mould & kitchen grease |
| Recommended frequency | Every 3 - 4 months | Every 12 - 18 months (or as needed) |
| Workmanship warranty | 30 days | 30 days |
Estimated Cost & Choosing Without Guesswork
Not sure how dirty your coil is? Book RM90 standard servicing first; our technician will inspect the blower with a torch alongside you before starting.
- •Standard Servicing: RM90 (1.0-1.5HP), RM110 (2.0HP), RM130 (2.5HP+).
- •Chemical Wash: RM150 (1.0-1.5HP), RM180 (2.0HP), RM220 (2.5HP+).
- •Both include PVC drain flushing, free PSI gas pressure check & 30-day warranty.
Book a Fast Service Slot
Select service, area, and date above to enable the booking button.