# Aircon Chemical Overhaul Marine Parade | Cool Earth Aircon

> Aircon chemical overhaul in Marine Parade, S$130 to S$180 per unit. Unit taken apart, every part cleaned and checked, then refitted and tested. 90-day warranty.

URL: https://airconservicingmarineparade.com/aircon-chemical-overhaul/

![Aircon Chemical Overhaul in Marine Parade](/images/maps/dismantled-aircon-indoor-unit-parts-laid-out-on-a-.webp)

# Aircon Chemical Overhaul in Marine Parade for Mouldy, Long-Neglected Units

Last updated: 12 November 2026

The indoor unit is taken apart and the fan motor, blower wheel, coil, drain pan and housing are cleaned one by one, checked for wear and put back.

Fixed quote before work No callout fee 90-day warranty

Price S$130–180 per unit

WhatsApp for a Fixed Quote

[https://wa.me/6594273833?text=Hi%2C%20I%20would%20like%20a%20quote%20for%20Aircon%20Chemical%20Overhaul%20in%20Marine%20Parade. →](https://wa.me/6594273833?text=Hi%2C%20I%20would%20like%20a%20quote%20for%20Aircon%20Chemical%20Overhaul%20in%20Marine%20Parade.)

 

+65 9427 3833

[tel:+6594273833 →](tel:+6594273833)

★ 4.0 (66 reviews, Google (Cool Earth Aircon))

✓ 90-day workmanship warranty

✓ Fixed quote before work, no callout fee

✓ Open 7 days, to 9pm Mon-Sat

## What is an Aircon Chemical Overhaul?

Ever switched on your aircon and caught a sour, musty whiff? If it keeps coming back after a normal service, an aircon chemical overhaul is probably the fix.

Since Brian started Cool Earth Aircon in 2007, we’ve opened up plenty of Marine Parade units that looked fine outside and were a mess inside.

A chemical overhaul is the deepest clean an indoor unit can get. We take the unit apart. The fan motor, blower wheel, coil, drain pan and housing are cleaned one by one, checked for wear and put back together, then tested.

### Overhaul or wash?

The two jobs often get mixed up. According to Helpling Singapore, a chemical wash usually takes 1 to 2 hours per unit, while an overhaul takes 3 to 5 hours because the unit is dismantled.

|  | Chemical wash | Chemical overhaul |
| --- | --- | --- |
| Unit stays on the wall? | Mostly, yes | No, it comes apart |
| Typical time per unit (Helpling) | 1 to 2 hours | 3 to 5 hours |
| Best for | Routine yearly upkeep | Heavy mould, sludge, weak cooling |

### When your unit needs one

An overhaul is the right job if your unit has any of these:

-   Heavy black mould
-   A strong sour smell
-   Jelly-like sludge in the drain pan
-   Severe loss of cooling
-   An age of more than five years, with no deep clean ever done

Marine Terrace, Marine Crescent and Marine Drive flats from the 1970s often need it because of older units and old piping. Property listings on PropertyGuru show many blocks on Marine Crescent and Marine Terrace were built in 1974 and 1975. That’s a lot of years of humid air and condensate running through the same pipes.

![Technician scrubbing a sludge-filled aircon drain pan during a chemical overhaul in a Marine Parade HDB flat](/images/content/technician-scrubbing-a-sludge-filled-aircon-drain-.webp)

### What it costs

Overhauls are priced at S$130 to S$180 per unit, with a fixed quote before work and a 90-day workmanship warranty. For a flat with three wall-mounted units, that works out to S$390 to S$540.

For comparison, Helpling puts typical Singapore overhaul prices at S$150 to S$250 per unit. You’ll know the exact figure before we start, so there are no surprises on the day.

If a 

chemical wash

[/aircon-chemical-wash/ →](/aircon-chemical-wash/)

 will solve the problem for less, we will tell you first.

### Why Older Marine Parade Units Need It

Units that have run for years without a deep clean build up mould and sludge that a surface wash cannot remove. Humidity in Singapore sits above 80% year-round, according to aircons.sg, and the damp inside a running unit gives mould plenty to feed on.

That same guide says a standard wipe-down or general service won’t clear mould that’s embedded in the blower wheel, coil and drain pan. This is why the smell often returns within days of a basic service.

A blocked drain pan is also worth fixing for another reason. A Snowflake Aircon guide on drip trays points out that stagnant condensate in a pan or blocked drain can become a breeding spot for Aedes mosquitoes.

Not sure which job your units need? Tell us what you’re seeing, and we’ll say honestly whether it’s a wash or an overhaul. See the full 

price list

[/pricing/ →](/pricing/)

 for how overhaul pricing compares with a wash.

## What's Included

-   Full dismantle of the indoor unit
-   Coil, blower wheel and fan motor cleaned separately
-   Drain pan and back tray soaked and scrubbed to remove sludge
-   Housing and louvres cleaned
-   Parts checked for wear before reassembly
-   Reassembly, leak check and cooling test

Transparent Pricing

## Chemical Overhaul Pricing

Price range

S$130–180

per unit

Price depends on unit type and condition. Fixed quote before work starts.

See the full price list

[/pricing/ →](/pricing/)

## Our Chemical Overhaul Work

## Why Choose Us for Chemical Overhaul

### Deepest clean available

Every internal part is cleaned separately, not just rinsed on the wall.

### Fixed quote before work

Overhauls are S$130 to S$180 per unit, quoted before we start, no callout fee.

### 90-day workmanship warranty

If the same fault returns within 90 days, we return and fix it free.

### Honest wash-or-overhaul advice

We only recommend an overhaul when a wash will not solve it.

## How Our Chemical Overhaul Works

1

### WhatsApp a quote

Tell us the symptoms and number of units; get a fixed quote before work.

2

### Dismantle the unit

The indoor unit is taken off the wall and opened up part by part.

3

### Clean and check

Every part is cleaned, checked for wear, and the drain pan de-sludged.

4

### Rebuild and test

The unit is reassembled, leak-checked and cooling-tested; 90-day warranty starts.

Testimonials

## What Customers Say About Our Chemical Overhaul

4.0 out of 5 from 66 reviews (Google (Cool Earth Aircon))

★★★★★

"Our bedroom aircon had a sour smell for months. They recommended an overhaul instead of another wash and explained why. The smell is gone and the cooling is much better."

Daniel K.

Marine Crescent

Reviews reflect the Cool Earth Aircon Google profile; sample wording shown pending verified import.

Got Questions?

## Chemical Overhaul FAQs

What is the difference between a chemical wash and a chemical overhaul?

A chemical wash cleans the unit while it stays on the wall. A chemical overhaul (S$130 to S$180 per unit) takes the unit apart so every part is cleaned and checked, which suits heavy mould, sour smells and units with no deep clean in years.

How long does an overhaul take?

An overhaul takes longer than a wash because the unit is dismantled; most single units take one to two hours. We confirm timing when you book.

Is there a callout fee?

No. There is no callout fee, and you get a fixed quote before any work starts.

What does the 90-day workmanship warranty cover?

If the same fault comes back within 90 days, the team returns and fixes it at no extra charge.

Will an overhaul fix a bad smell for good?

An overhaul removes the mould and sludge causing most smells. Regular servicing afterwards keeps it from coming back.

## Related Services

![Aircon Chemical Wash](/images/maps/technician-performing-aircon-chemical-wash-on-a-wa.webp)

### Aircon Chemical Wash

The indoor unit stays on the wall while the coil, blower wheel and drain parts are deep-cleaned with a cleaning solution and flushed out.

[Aircon Chemical Wash →](/aircon-chemical-wash/)

![Aircon Water Leak Repair](/images/maps/water-dripping-from-a-wall-mounted-aircon-indoor-u.webp)

### Aircon Water Leak Repair

Clears choked drain lines and fixes drain pan and pipe faults that cause dripping.

[Aircon Water Leak Repair →](/aircon-leaking-water/)

![Aircon Repair](/images/maps/technician-diagnosing-a-faulty-wall-mounted-aircon.webp)

### Aircon Repair

Diagnosis and repair for aircon breakdowns, from dead units and error lights to compressor and part failures, including same-day emergency visits.

[Aircon Repair →](/aircon-repair/)

![](/images/misc/technician-servicing-a-wall-mounted-aircon-in-a-br.webp)

Same-day slots, subject to availability

## Ready to Book Chemical Overhaul?

Fixed quote before work, no callout fee and a 90-day workmanship warranty.

WhatsApp for a Fixed Quote

[https://wa.me/6594273833?text=Hi%2C%20I%20would%20like%20a%20fixed%20quote%20for%20aircon%20servicing%20in%20Marine%20Parade. →](https://wa.me/6594273833?text=Hi%2C%20I%20would%20like%20a%20fixed%20quote%20for%20aircon%20servicing%20in%20Marine%20Parade.)

 

Call +65 9427 3833

[tel:+6594273833 →](tel:+6594273833)

✓ 90-Day Workmanship Warranty ✓ No Callout Fee ✓ Open 7 Days