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If your air conditioner isn't cooling like it used to—or starts giving off cold and musty smells—it might be time for an aircon chemical wash. This service goes beyond basic cleaning, targeting deep-seated dirt, mould, and bacteria that clog up your unit and affect its performance.
What is an Aircon Chemical Wash?
An aircon chemical wash involves dismantling key components of your air conditioning unit, such as the fan coil, filters, and drainage system, and cleaning them using specially formulated chemical solutions. It’s designed to remove accumulated grime, sludge, and microbial build-up that regular cleaning can’t reach.
Aircon Chemical Wash Price
Chemical Wash
9K BTU
1 Unit = $100
2 Units = $180
3 Units = $240
4 Units = $290
5 Units = $350
Chemical Wash
12K BTU
1 Unit = $110
2 Units = $200
3 Units = $290
4 Units = $370
5 Units = $455
Chemical Wash
18K BTU
1 Unit = $130
2 Units = $235
3 Units = $345
4 Units = $448
5 Units = $545
Chemical Wash
24K BTU
1 Unit = $150
2 Units = $270
3 Units = $395
4 Units = $510
5 Units = $620
Price starting from: Weekends surcharge, Sat: +$10 before 6pm, +$15 after 6pm. Sun: +$20 before 6pm, +$30 after 6pm.
338's Aircon Chemical Wash Includes
An aircon chemical wash is done on the wall with the aircon still mounted on the wall itself.
This makes the cleaning process faster (about 30 minutes per unit) and reduces the chance of gas leaks because the aircon gas pipe joints are not removed.
However, this also means that the internal parts that are not fully removed nor cleaned by the chemical (only the fan coil).
Scope of Work:
* Depends on model & condition of fcu.
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Remove the Aircon FCU cover.
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Remove the water tray & blower unit.*
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Spray chemical compound on fan coil.
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Rinse with clean water.
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Vacuum the drainage system & internal system.
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Wipe clean the interior unit.
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Reattach the blower* & test roll.
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Reattach the water tray & clean cover.
Why Your Aircon Needs a Chemical Wash
Kills Mould & Bacteria
No more contaminated air from mild and bacteria. An AC chemical wash removes and prevents mould and bacteria buildup, leading to smoother airflow and reduced condensation!
Removes Any Foul Smell
A foul smell from your air conditioner is a huge indicator that something is not right - there might
be bacteria growing on the air filter, or a small animal may have died inside. A chemical wash
can get rid of those malodours easily!
Better Air Quality
Poorly maintained air conditioning units can
irritate your respiratory system and ramp up allergies. A chemical wash cleans your system, eliminating 99.9% of harmful bacteria that
build up inside your air conditioner!
Extends Air Conditioner Lifespan
Poorly maintained air conditioning units can
irritate your respiratory system and ramp up allergies. A chemical wash cleans your system, eliminating 99.9% of harmful bacteria that
build up inside your air conditioner!
Improves Air Flow Efficiency
Over time, dirt and grime build up on your AC's evaporator coil, blocking air from passing through easily. A chemical wash clears out this stubborn debris, allowing air to flow freely again and improve cooling performance.
As Featured In
Our Aircon Chemical Wash Service in Singapore
Don’t Forget the Condenser Unit for
Fresher, Cooler Air!
The outdoor condenser unit plays a key role in your aircon’s performance. When it's clogged with dust and grime, airflow is restricted, making your system work harder and less efficiently.
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The unit will first be sprayed with a cleaning chemical
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The cleaning solution will be allowed to interact for five to ten minutes
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The unit will be rinsed off with clean water.
Heads-up: If you live in a high-rise, let your downstairs neighbours know before the rinse—dirty water will flow down!
What Our Customers Say
Marcus
Sengkang 4-Rm HDB
Was very satisfied with my aircon installation. Installation team was professional and explained the different steps when installing. Aircon is very cold and quiet, very powerful.
Mr Lee
Tampines HDB EA
Good price and value for money. Installation was done within a day and rubbish from installation was packed and thrown away by installation guys. Will recommend you all to my friends and family next time.
Hao Jie
Redhill 3-Rm HDB
Very fast installation from when i book to when the aircons are installed finish. Company gave us 5 years warranty for the service so we know if anything we will not need to bear additional costs for replacement. Good job!
When You Should Get a Chemical Wash
Air conditioner has never undergone general servicing
Air conditioning system is less cold
Air conditioning unit gives
off weird smells
When your air conditioner can't produce cold air or has unexpectedly increased energy consumption, a chemical wash becomes necessary.
During aircon chemical washing, the air conditioner unit is returned to a cleaner, more efficient state using a variety of chemical-based cleaners that won't damage the internal components.
How Often Should You Do a Chemical Wash?
We recommend a chemical wash every 6 to 12 months, depending on how frequently you use your aircon and the air quality in your environment. Households with pets, young children, or individuals with allergies or respiratory conditions may benefit from more frequent deep cleaning.
A chemical wash involves cleaning the coils, air filters, and water tray using a chemical solution to remove dirt, mold, and harmful bacteria. You can mostly see improvements in airflow and energy efficiency.
In addition to the chemical wash, an aircon chemical overhaul involves a deeper cleaning of the drainage pipes, heat exchange coils, and blower wheels. Any damaged parts are repaired or replaced during the process. It is recommended once a year.
Learn more about our chemical overhaul service here, or get a more detailed explanation comparing chemical washes and chemical overhauls here.
What is the Difference between an Aircon Chemical Wash and a Chemical Overhaul?
Cleaning Method | Chemical Wash | Chemical Overhaul |
|---|---|---|
Impact on Cooling
| ✔ Helps retain cooling efficiency with routine maintenance | ✔ Major improvement, especially for old or heavily used units |
Service Time Required
| Shorter, since it targets only accessible areas | Longer time due to disassembly and part inspection |
Cost | Mid-range; more affordable option for general maintenance | Higher due to intensive labour and parts replacement |
Recommended Frequency
| If aircon is not serviced regularly, not more than once per year unless special circumstances | Every few years or when performance drops significantly |
Effectiveness on Dirt
| Effective for removing dust and surface-level allergens | Excellent for removing stubborn grime, mould, and debris |
Best Suited For
| Regular maintenance or minor performance issues | Units with severe dirt buildup, odour, or loss of cooling performance |
Type of Cleaning Agent
| Specialised chemical solutions | Specialised chemical solutions |
Scope of Cleaning
| Cleans accessible components without dismantling the unit | Deep internal cleaning with full disassembly of the aircon unit |
Why Choose 338 Aircon for Your Chemical Wash
What You Get When You Pick 338's Quality
Aircon Repair Services:
SINGAPORE'S MOST AFFORDABLE AIRCON SERVICES
Our client-centric business model allows us to be the most competitively priced in Singapore, working with your budget to meet your aircon needs.
EXPERIENCED TECHNICIANS
Each aircon technician at 338 has a minimum of 5 years experience with various aircon brands, meaning we only need 1 trip to complete the job!
AUTHORIZED DISTRIBUTION OF RENOWNED BRANDS
338 Aircon is an authorized distributor of brands such as Daikin & Mitsubishi. With an assurance of well-known global brands, Aircon 338 should certainly be your preferred option.
TECH-ENABLED CONVENIENCE
Our services are supported digitally, from invoices to contracts. No more misplacing important paperwork!
EXCELLENT SERVICE GUARANTEED
Aircon performance still poor after chemical washing? You're covered by our 3-month warranty - just contact our customer service team!
FREQUENT VARIETY OF PROMOS AND DISCOUNTS FOR CUSTOMERS
On top of our affordable prices, 338 Aircon also offers promotions regularly. By taking advantage, you can save more while having your equipment installed or serviced.
Book Your Same Day Servicing With Us Now!
Our hotline is open daily from 8 am to 10 pm!
Anywhere in SG
(Look for Jay)
FAQs
Is a chemical wash for an aircon unit necessary?
Yes, a chemical wash is essential for maintaining optimal performance, especially if the aircon unit is not cooling well or is leaking. Standard cleaning without chemicals might not remove all dirt and grime.
How is it different from normal aircon servicing?
Regular servicing includes basic cleaning of filters and external parts, while a chemical wash involves dismantling and soaking internal parts in a chemical solution to remove heavy buildup. It’s ideal for poorly maintained or underperforming units.
Is chemical wash suitable for all types of aircons?
Yes, it is suitable for most aircon units across all unit types. However, it’s not suitable if the aircon unit is too old as the parts may break during dismantling due to brittleness of plastic.
How do you clean an aircon unit with chemicals?
During a chemical wash, the aircon unit is fully disassembled, and each part is cleaned with a chemical solution. The parts are soaked to dissolve accumulated dirt, bacteria, and grime. This should only be done by a professional, as the chemicals can be harmful if not handled properly.
How long does a chemical wash take?
A typical chemical wash takes about 45 to 90 minutes per unit, depending on the condition of your system.
What are the steps in an aircon unit chemical wash?
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Dismantling the inner and outer units to access the parts.
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Cleaning filters, evaporator coils, condenser coils, blowers, and fans with chemicals.
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Clearing the overflow pan and drainage unit.
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Inspecting the compressor, fan motor, and refrigerant levels.
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Checking for leaks and fixing any found.
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Cleaning electrical connections and ensuring no loose wires.
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Lubricating mechanical components.
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Reassembling the unit and testing its performance.
Should I choose a chemical wash or a chemical overhaul?
Choose a chemical wash if your aircon is regularly maintained and only has minor dirt buildup or reduced airflow. Opt for a chemical overhaul if your unit has major cooling issues, heavy grime, strange noises, or hasn’t been serviced in over a year—it involves deep cleaning with full disassembly for maximum performance restoration.
Is a chemical wash safe for my aircon?
Yes. When done by our experienced technicians, chemical washing is safe and can extend the life of your unit. It also improves air quality by removing mould and allergens.
Do I need to leave the house during the service?
No, you can remain at home. The process is safe, but you may want to stay in another room during the cleaning for comfort and to avoid chemical odours.