Aircon Chemical Overhaul Price in Singapore (2025 Guide)

When your air conditioner starts losing its cooling power or emits a stale odor, it may be time for a chemical overhaul. This comprehensive cleaning service goes beyond basic aircon servicing or a chemical wash, restoring the performance and hygiene of your entire air conditioning system.

In Singapore’s humid climate, dirt, mold, and bacteria easily build up inside air conditioning units, affecting cooling efficiency and indoor air quality. That’s why many homeowners and offices choose an aircon chemical overhaul to keep their aircon working at its best.

This article explains what a chemical overhaul is, its average pricing, what’s included in the overhaul service, and how often you should do it.

Quick Takeaways

• The average aircon chemical overhaul price in Singapore ranges from $120 to $450 per unit, depending on system type and condition.

• A chemical overhaul includes dismantling, chemical cleaning, gas top up, and full testing of the air conditioning unit.

• Compared with a chemical wash, an overhaul provides deeper cleaning of the fan coil, compressor suction, and drainage system.

• Most homes need to schedule one every 12 to 18 months for optimal performance and cleaner air.

• Choosing experienced technicians ensures your air conditioner runs efficiently, safely, and lasts longer.

What Is a Chemical Overhaul?

An aircon chemical overhaul is a deep cleaning and restoration process performed by trained technicians. The process involves dismantling the aircon unit, cleaning internal components, and removing contaminants that affect the discharge pressure, compressor suction, and airflow.

During chemical cleaning, every fan coil unit, water tray, and drainage tray is soaked in a safe chemical solution that removes mold, grease, and stubborn dirt. The fan blower, the fan coil, and the air filters are also thoroughly washed to ensure the air coming out of your air conditioner is clean and fresh.

A typical scope of work includes:

• Dismantling the unit from the wall

• Cleaning the fan, filter, and drainage system

• Flushing out blockages from the drainage tray

• Applying a chemical treatment to remove bacteria

• Checking and performing gas top up if needed

• Reassembling and testing the air conditioning unit

This complete overhaul helps stabilize the air conditioner’s performance and reduces noise, leaks, and foul odors.

Average Aircon Chemical Overhaul Price in Singapore

The aircon chemical overhaul price in Singapore depends on several factors, including how many units you have, the type of air conditioning unit installed, and the overall scope of servicing required. Below is a list of typical prices you can expect for 2025:

Type	Units	Average Price (SGD)	Recommended Frequency
Wall-mounted (System 1)	1 unit	$120 – $180 per unit	Every 12 – 18 months
System 2	2 units	$200 – $300	Every 12 – 18 months
System 3 – 4	3 – 4 units	$280 – $450	Every 12 – 18 months
Ceiling / Cassette type	1 unit	$250 – $400	Every 12 – 18 months

Pricing may vary by brand and the condition of your aircon. Heavily used air conditioners or those exposed to dust and humidity may need to undergo this aircon maintenance more frequently.

At 338 Aircon Services, we provide transparent air conditioning services and honest quotations so you always know what’s included before the service begins.

What’s Included in the Overhaul Service?

A professional overhaul service offers a detailed scope of work that ensures your air con performs like new again. The cleaning covers all major parts and components of the air conditioning system.

Here’s what’s typically included:

• Full dismantling of the aircon unit

• Chemical soaking of the fan coil and fan blower

• Cleaning of drainage system, water tray, and drainage tray

• Rinsing and drying of the internal air conditioning unit

• Flushing of aircon pipes and checking for leaks

• Gas top if refrigerant is low

• Inspection of compressor suction and discharge pressure

• Final testing of cooling performance and air filters

The chemical cleaning eliminates mold, dust, and harmful microorganisms, helping your air conditioners run smoothly and deliver cleaner air throughout your air space.

Aircon Chemical Overhaul vs Chemical Wash

Many homeowners wonder about the difference between a chemical wash and a chemical overhaul. While both are cleaning methods, the scope of work is very different.

Feature	Chemical Wash	Chemical Overhaul
Dismantling	Partial	Full
Cleaning Depth	Surface-level	Deep internal
Ideal for	Regular general servicing	Major performance drop
Duration	30–60 mins	2–3 hours
Cost	$60–$90/unit	$120–$180/unit
Components Covered	Coils only	All internal parts
Result	Moderate improvement	Full restoration

A chemical overhaul is more thorough. It not only removes dirt but also resets the air conditioning system for long-term performance and reliability.

When You Need to Schedule a Chemical Overhaul

If you notice any of the following, it’s a sign your aircon might require an aircon chemical overhaul soon:

• Weak cooling from the air conditioner even on low settings

• Mold smell or musty odour from the fan coil unit

• Water leakage from the air conditioning unit

• Unusual vibrations or noise from the unit

• High electricity bills despite the same usage

• Frequent servicing needed to maintain cooling

These are common indicators that an aircon has accumulated dirt or blockages that normal wash or general servicing cannot resolve.

Benefits of Aircon Chemical Overhaul

A well-performed chemical overhaul is more than a cleaning—it’s a complete renewal of your aircon system.

1. Restores Cooling Efficiency – Clears clogs from the fan coil and components so the air conditioning system cools faster.

2. Improves Indoor Air Quality – Removes mold and bacteria so the air conditioning units circulate cleaner air.

3. Prevents Water Leaks – Cleaning the drainage system and drainage tray prevents overflow.

4. Extends Equipment Lifespan – Reduces strain on compressor suction and motor.

5. Reduces Energy Bills – Clean fan coil units and smoother airflow lower power usage.

How Often Should You Do a Chemical Overhaul in Singapore

How often you should perform an aircon chemical overhaul depends on your aircon’s usage frequency and the environment in which it’s installed.

Usage Type	Recommended Frequency
Home	Every 12 – 18 months
Office	Every 9 – 12 months
Heavy use (24/7)	Every 6 months

Singapore homes typically require a chemical overhaul once every 12 to 18 months to maintain efficiency and hygiene.“Most households in Singapore benefit from doing this once a year,” explains a senior technician from 338 Aircon. “It helps prevent performance issues and unnecessary repairs later.”

Why Choose 338 Aircon for Your Aircon Chemical Overhaul

When selecting a trusted provider for air conditioning services, it’s important to choose a team that understands every brand and model of aircon.

Here’s why 338 Aircon is the preferred choice:

• Over 15 years of experience in air conditioning and aircon maintenance

• Professional technicians trained in various air conditioning units

• Safe, eco-friendly chemical solution used during the process

• Transparent pricing with clear breakdown of the scope of work

• Thorough rinsing and drying to protect your air conditioning unit

• Fast response and islandwide service across Singapore

Our aircon service includes full dismantling, chemical cleaning, reassembly, gas top up, and final testing to ensure the aircon performs perfectly.

Customer Reviews from Singapore Homeowners

“My aircon had poor cooling until I tried a chemical overhaul. The team from 338 Aircon showed photos of the buildup inside the fan coil—it was shocking how much dirt was clogging the unit. After cleaning, the air feels fresh again!” — Grace L., Tampines

“The technicians were punctual and professional. They explained the scope clearly and completed the job within two hours. My air conditioning system feels brand new again.” — Ahmad R., Hougang

Maintenance Tips After an Aircon Chemical Overhaul

To maintain the results of your aircon, keep up with simple aircon maintenance between major cleanings:

Task	Frequency	Purpose
Clean filter and air filters	Every 2–4 weeks	Maintain clean air
Schedule general servicing	Every 3–4 months	Keep airflow smooth
Perform aircon chemical wash	Every 6–9 months	Remove mild buildup
Full chemical overhaul	Every 12–18 months	Restore complete performance

Replacing filters and cleaning the unit regularly helps extend the lifespan of your cooling system.

Environmental and Safety Practices

338 Aircon ensures that all used chemical solution waste from the process is properly neutralized and disposed of according to Singapore’s NEA safety standards. Our technicians always ensure the air conditioning components are thoroughly rinsed and dried after chemical cleaning to prevent corrosion.

FAQ — Aircon Chemical Overhaul Price in Singapore

1. How much does an aircon chemical overhaul cost in Singapore?

The average aircon chemical overhaul price in Singapore ranges between $120 and $450 per unit, depending on brand, usage, and system type.

2. How long does a chemical overhaul take?

A typical chemical overhaul takes about 2 to 3 hours per unit. Larger air conditioning units or heavily soiled systems may take longer.

3. Is a chemical overhaul different from a chemical wash?

Yes. A chemical wash is a surface-level cleaning, while a chemical overhaul involves full dismantling and deep cleaning of the fan coil, drainage system, and compressor components.

4. When do I need to schedule a chemical overhaul?

You should book one when your aircon shows weak cooling, water leaks, or persistent odors—even after general servicing.

5. Does a chemical overhaul include gas top up and inspection?

Yes. During the process, technicians check for refrigerant levels and perform gas top up if necessary, along with a complete performance inspection of the unit.

Final Thoughts

If your aircon has weak airflow, leaks, or persistent odor, you likely need to consider a chemical overhaul. Though the price is higher than a chemical wash, the benefits far outweigh the cost.

The aircon chemical overhaul price typically ranges from $120 to $450 in Singapore, depending on the number of units and the scope of work. This service not only restores performance but also improves indoor air quality, prolongs lifespan, and reduces energy bills.

For reliable air conditioning services, aircon servicing, and overhaul experts, contact 338 Aircon today.

WhatsApp our 24/7 team for a free quotation and find out how a chemical overhaul can make your air conditioner run like new again.