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Aircon Chemical Wash Vs Chemical Overhaul: Which Is Right For Your AC?

Choosing between an aircon chemical wash and an overhaul can seem like a tricky decision. Both services clean your air conditioner but in different ways. A chemical wash helps keep your unit running smoothly, improving both performance and air quality.

On the other hand, a chemical overhaul involves more extensive work to fix serious issues.

With 18 years of experience in Singapore’s air conditioning industry, I’ve seen firsthand how the right maintenance method can extend your AC’s lifespan. At Cool Earth Aircon Services, we handle over 380 units monthly—ensuring top-tier care for every type of system.

Ready to learn which service best suits your needs?

Key Takeaways

  • A chemical wash cleans parts of your AC, like fan coils and water trays, using chemicals. It costs $70 for one unit or $60 each for more than one. Do it every 6 to 12 months to keep your aircon clean.
  • An overhaul takes the whole AC apart to clean and fix everything. It’s needed every 3 to 5 years and costs $150 per unit. This deep clean helps stop big problems and makes the aircon work well.
  • The main differences between a wash and an overhaul are how much they take the AC apart, how often you need them, why you do them, time taken, cost, and what they achieve.
  • Having professional help for maintenance from a team like Cool Earth Aircon Services means your AC gets the right care. Their experience ensures that whether it’s a simple wash or an intensive overhaul, your unit runs efficiently.

What is an Aircon Chemical Wash?

An aircon chemical wash is a detailed cleaning method. Technicians take apart the main parts of your AC, like fan coils and water trays. They use a special chemical solution to clean away all the dirt, grime, mold, and mildew from these pieces.

This process ensures that your air flows better and your unit works like new. Prices start at $70 for one unit but drop to $60 each if you have more than one cleaned at once. It’s smart to get this service every 6 to 12 months to keep your aircon running smoothly.

What is an Aircon Chemical Overhaul?

An aircon chemical overhaul is a detailed process. It involves taking apart your air conditioning unit piece by piece. Technicians clean, repair, or replace each part as needed. This service tackles problems like blocked vents, clogged drainage pipes, damaged evaporator coils, faulty air filters, and fan bearing issues.

Cool Earth Aircon Services recommends this every 3 to 5 years. The cost for one unit is $100. Overhauls ensure that your AC runs smoothly and efficiently. They remove dirt and dust from internal parts like the blower wheels and vent system.

This method vastly improves indoor air quality and extends the lifespan of your aircon unit by preventing corrosion and removing harmful bacteria.

Key Differences Between Chemical Wash and Chemical Overhaul

Exploring the distinctions between aircon chemical wash and chemical overhaul reveals crucial insights for maintaining your unit. Let’s break down the specifics.

AspectChemical WashChemical Overhaul
Process DepthPartial dismantlingFull dismantling
CostStarts at $80 per fan coil unitStarts at $150 per fan coil unit
FrequencyEvery 6 to 12 monthsEvery 3 to 5 years
ObjectiveRemoves superficial dirt and debrisThoroughly cleans and repairs, ensuring optimal performance
Time TakenLess timeMore time, due to complexity
EffectivenessSuitable for maintenanceBest for restoring efficiency

Both services play critical roles. Your choice depends on your unit’s condition and needs. Going for a chemical wash suits regular upkeep, while an overhaul addresses deeper issues, ensuring your aircon runs smoothly.

Pros and Cons of Chemical Wash

Macro photography captures chemical wash in progress within air conditioning unit.

A chemical wash clears out your aircon, getting rid of mould and dust. It’s a solid choice for regular upkeep. Here are the ups and downs:

  1. Pros:
    • Boosts air quality by removing harmful particles.
    • Prevents mould and reduces chances of corrosion.
    • Enhances system efficiency, cutting down energy costs.
    • Extends the lifespan of your aircon with routine cleaning.

  2. Cons:
    • Might not fix deeply rooted problems in older units.
    • Frequent washes could stress components if not done correctly.
    • Doesn’t involve dismantling the entire unit, so some parts might remain uncleaned.

Choosing between a thorough wash or an overhaul boils down to your aircon’s needs. If it’s regular maintenance you’re after, a chemical wash does the trick, ensuring your unit runs smoothly while saving on costs.

Pros and Cons of Chemical Overhaul

A chemical overhaul gives your aircon a deep clean. It involves taking apart the entire unit to cleanse every part thoroughly. Here are the pros and cons:


  1. Extends your AC’s life by cleaning parts regular methods can’t reach.
  2. Improves efficiency, as dirt-free parts work better and use less electricity.
  3. Fixes minor issues before they become big problems, saving you money on repairs.
  4. Ensures healthier air quality by removing all mould and bacteria.


  1. More expensive than a chemical wash due to its thoroughness.
  2. Takes longer to complete because of the detailed process involved.
  3. Requires skilled technicians like those at Cool Earth Aircon Services for safe dismantling and reassembling.
  4. Not needed as often as a chemical wash, so some might delay this necessary service.

Each point highlights what makes a chemical overhaul both beneficial and demanding for your air conditioner maintenance needs.

Cost Comparison of Both Services

Deciding between an aircon chemical wash and a chemical overhaul? Understand the costs first. Cool Earth Aircon Services offers both services at competitive prices, ensuring your unit runs efficiently without breaking the bank.

ServiceCost for 1 UnitCost for Multiple Units
Chemical Wash$70$60 each
Chemical Overhaul$150

Prices start higher for chemical overhauls due to their thoroughness. This service dismantles the unit completely, ensuring a deep clean. In contrast, a chemical wash cleans less intensively, making it cheaper, especially when servicing multiple units.

Choose wisely. Your budget and the condition of your aircon unit should guide your decision. With Cool Earth Aircon Services, you get expert care at fair prices, regardless of the choice.

How Often Should You Perform Chemical Wash or Overhaul?

You should get a chemical wash for your aircon every 6 to 12 months. This helps keep it working well by removing dust and dirt. If your aircon needs more care, like when coils get blocked, choose a chemical overhaul.

Do this every 3 to 5 years. It’s a deeper clean that takes apart the entire unit to clear out grime and improve performance.

Professional Help for Aircon Maintenance

Getting your aircon serviced by professionals is key. Cool Earth Aircon Services, led by Brian with 18 years of experience, is a top choice in Singapore. His team of eight technicians works on over 380 units each month, showing they can handle any job big or small.

This expert team does both chemical washes and chemical overhauls to make sure your unit runs well.

Choosing the right service for your aircon needs ensures it stays in great shape. Whether you need a basic clean or a deep overhaul, Brian’s crew has the skills. They use special tools to remove dirt and grime, keeping your air conditioner cooling efficiently.

Trust them to extend the life of your AC unit with their proven methods.


Choosing between a chemical wash and a chemical overhaul depends on your aircon’s condition. If it just needs regular maintenance, go for the wash. It’s cheaper and keeps things running smoothly.

But, if your aircon acts up, making noises or not cooling, then an overhaul is necessary. It digs deeper to fix and clean every part. Deciding isn’t tough – look at what your unit needs based on its performance.

For expert advice on which service suits your aircon best, reach out to Cool Earth Aircon Services at [email protected].


1. What’s the difference between an aircon chemical wash and a chemical overhaul?

A chemical wash involves using chemicals to clean your air conditioner without taking it apart. It removes dirt and debris, ensuring that your air stays fresh. A chemical overhaul, however, is more thorough. Technicians dismantle the entire unit to clean every part deeply, including vital components like the condenser coil.

2. How do you know if your aircon needs a chemical wash or an overhaul?

If regular cleaning doesn’t improve your aircon’s performance, a chemical wash might be due. When facing issues like water leaks or significant efficiency drops even after a wash, it’s time for a chemical overhaul.

3. Why choose Cool Earth Aircon Services for these services?

Cool Earth Aircon Services specialises in both methods of cleaning with expertise and precision. They ensure that your air conditioner runs smoothly, extending its lifespan.

4. Can either process extend my unit’s life?

Yes! Both processes remove grime that can cause damage over time. Regular maintenance service keeps units running efficiently for longer.

5. What are the main benefits of each method?

Chemical washing is usually used as preventive maintenance—keeping things running well before problems start. Overhauls tackle deeper issues, restoring performance when standard methods aren’t enough.

6. When should I contact Cool Earth Aircon Services?

Contact them when you notice decreased efficiency, strange noises, or if it’s been a while since your last service. Don’t wait until problems worsen. Keep cool and comfortable by reaching out at [email protected] today.

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