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Aircon servicing · Singapore

Chemical Wash

Chemical Wash in Singapore — Kool Aircon

Where general servicing cleans the surface, a chemical wash goes deeper. We remove the internal components, apply a certified bio-enzyme compound directly to the fan coil and drainage system — reaching the mould, bacteria, and grime that a standard service can't touch — then rinse, vacuum, and reassemble. You'll notice the difference in cooling and air quality immediately.

Best for: Poor cooling · Foul or musty odours · Unusual noise · First clean in 6+ months

Fast BookingExperienced TechniciansService GuaranteeNo Hard Selling
Pricing
from $70 per unit
1 unit$80
2 units$150
3 units$220
4 units$280
5+ units$350+
Or call +65 8815 2868

Why do you need a chemical wash?

⚠️
Your aircon smells musty or stale

That smell is mould and bacteria growing inside the coil. It's not a surface issue — it's deep inside the unit, which is why it persists even after a general service. A chemical wash flushes the entire coil with our certified bio-enzyme solution, eliminating the source rather than masking it. The smell doesn't come back until the colony re-establishes — which is why we recommend a chemical wash every 6 months.

🕐
Your aircon still isn't cold after a general service

If your aircon still isn't cold after a recent service, the coil likely has a deeper layer of compacted grime restricting heat exchange. Surface cleaning won't fix this — the coil needs to be chemically flushed to restore proper cooling performance. This is one of the most common reasons customers come to us after being disappointed by another company's service.

📅
You can see mould on the filter or coil

Visible mould means the colony is already established and actively spreading. Every time your unit runs, it circulates mould spores through your home — through the same air your family breathes. A general service at this stage would be insufficient. A chemical wash removes it properly, treating the coil directly with bio-enzyme solution that breaks down the mould at a biological level rather than simply wiping the surface.

Our Process

Protective Setup
1
Protective Setup

We set up a protective cover around your unit and place a collection bag to catch all the dirty water. Nothing drips down your wall or pools on your floor.

Clean Filters with Cleaning Agent
2
Clean Filters with Cleaning Agent

Filters are soaked and scrubbed to remove built-up dust and bacteria.

Deep Clean Blower and Drainage Trays
3
Deep Clean Blower and Drainage Trays

The blower wheel is removed and scrubbed. This is the component most chemical washes miss — it's deep inside the unit and covered in mould that a standard service simply can't reach.

Deep Clean Fan Coil
4
Deep Clean Fan Coil

We apply our cleaning compound directly to the fan coil and flush it through with clean water. This breaks down mould and bacteria.

Drainage Tray & Pipe Vacuum
5
Drainage Tray & Pipe Vacuum

The drainage tray and condensate pipe are fully flushed and vacuumed. Blocked drainage is one of the most common causes of water leaks — this step clears it completely.

Drying & Internal Wipe Down
6
Drying & Internal Wipe Down

All internal surfaces are wiped clean and dried before reassembly. Reassembling a wet unit traps moisture and encourages mould to return faster — drying properly extends the results of the wash.

Also on every Kool service
Bio-enzyme chemicals · 48-hr guarantee

How it works

1
Booking confirmed

WhatsApp us your address, unit count, and the issue you're noticing.

2
Technician arrives & assesses

The coil is inspected before any chemical is applied.

3
Bio-enzyme wash performed

Components removed, flushed with bio-enzyme solution, rinsed, and reassembled.

4
Job wrapped up

Final check done, and the area is cleaned up before we leave.

Questions about chemical wash

Have a question? We reply on WhatsApp within the hour.

How is a chemical wash different from a general service?
A general service cleans the accessible parts of your air conditioner as part of regular maintenance. A chemical wash is a deeper clean where the unit is dismantled further to thoroughly clean the internal components. We offer both a traditional chemical solution and a gentler bio-enzyme cleaning solution, which is suitable for homes with children, elderly family members and pets. A chemical wash is recommended for units that haven't been serviced for over 6 months, have visible mould, persistent odours, or heavy dirt build-up.
How long does a chemical wash take?
Will it fix my aircon not being cold?
How often should I do a chemical wash?
Kool Aircon technician

Ready to book a chemical wash?

WhatsApp us your address and number of units. We'll confirm your slot within the hour.

Or call +65 8815 2868

10+ yrs
Experience