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Aircon Unit Chemical Overhaul: The Pros and Cons

An aircon chemical overhaul is an essential process that you should immediately go for if you suspect a problem with the aircon unit’s performance. Neglecting to do so might aggravate the problem further. It can be anything ranging from reduced cooling to the aircon unit not switching on in the first place. You will have to call a professional aircon servicing company who would do a chemical overhaul and repair or replace the parts that have malfunctioned.

In the process of a chemical overhaul, the entire aircon unit is dismantled and each of its parts is removed and inspected. Faulty or damaged parts will be repaired or replaced. The other parts will be thoroughly cleaned with chemical reagents just like that of a chemical wash.

What makes aircon chemical overhaul different among others?

The main difference between normal servicing, chemical cleaning, and chemical overhaul is that the first two are done as preventive measures whereas a chemical overhaul is done when you suspect some aircon issues with the aircon performance or efficiency.

In the first two cases, your aircon unit might be working properly but you get the servicing or chemical cleaning is done to prevent any big problem from arising in the near future and to maintain the aircon unit’s performance.

However, the chemical overhaul is done when there is already some problem with the aircon unit’s performance, its cooling is affected, or you hear some strange noise, or smell a foul odor coming from the aircon unit.

In the case of normal servicing or chemical wash, parts may not be repaired or replaced, whereas in the case of an aircon chemical overhaul, there is almost always some form of repair or part replacement involved.

Another difference is the price of these three cleaning processes. A chemical overhaul is the most thorough, which also includes repair and replacement costs, so it is the most expensive. A chemical wash is relatively cheaper than a chemical overhaul but more expensive than a normal servicing.

All these methods are different forms through which you can clean and maintain your aircon unit, depending on the severity of the problem, you might want to choose any of them. Each has its own cost and advantages. But one thing is for sure, paying for any of these services is still affordable in the long run as compared to a case when your aircon unit breaks down due to no maintenance and you have to replace it with a new aircon unit.

What are the PROS?

1) A fresher and cleaner air

The main purpose of an aircon chemical overhaul is to eliminate any bacteria, mold, or mildew that has been accumulated within your aircon unit. When completely clean, your aircon unit will provide fresh and clean air without harmful and unwanted microorganisms.

2) It allows the aircon unit to have a longer lifespan

Cleaner parts mean a lower likelihood of malfunctions. This, in turn, will increase the lifespan of the aircon. Moreover, the overhaul process includes a thorough inspection of all parts. Regular overhauls will ensure that your system works problem-free and longer.

3) A cleaner aircon unit gives way to lower electricity bills

With smoother performance comes higher efficiency. This will definitely save you some money when it comes to paying the bills. The regular chemical overhaul will ensure that your aircon unit is clean and works properly at all times.

4) No more condensation

One of the benefits of regular aircon chemical overhaul is that you won’t have to deal with overheating, water leakage, or ice deposition anymore. The service includes a refrigerant gas top up which is the reason for most condensation problems due to overheating.

5) A more efficient aircon unit performance

The long-term result of a regular aircon chemical overhaul is a properly-working aircon unit. Usually, older and unmaintained struggle to reach the desired temperature due to dust and dirt clogging as well as faulty parts. With regular maintenance, this is easily prevented and you can enjoy faster and better cooling.

What are the CONS?

1) The usage of potentially harmful chemicals

Generally, one of the main procedures that are carried out during an aircon chemical overhaul is chemical cleaning. This involves the use of special chemical-based cleaners that remove the bacteria, mold, and mildew from the entire aircon unit. However, some people may react to these chemicals which can lead to possible respiratory problems like allergies, irritation, and others.

2) It is more expensive than other procedures

One thing about aircon chemical overhaul is that it costs a lot of money. Of course, this service includes every possible maintenance servicing all in one but some might want just a plain standard aircon cleaning. However, we at 338 Aircon Repair & Services, are sure to give you and your aircon unit the service that it deserves.

3) It takes more time

Moreover, completing such a complex mix of various procedures takes a lot of time. In short, the aircon unit has to be shut down and dismantled. In many cases, residents have to avoid entering the room for a certain period because of the chemicals used in the cleaning.

4) Only trained professionals can do it

Last but not least, this type of servicing can be carried out only by a professional aircon servicing company. Because they are hazardous, the chemical solutions have to be stored and disposed of properly. This requires proper training and skills.


It’s always a good time to talk about the common issues that aircon units have. This way, you’ll be able to spot if there are problems with your unit or not and prepare for its replacement accordingly. If you require our aircon servicing services, Whatsapp us at +65 9222 4141 for a fast and transparent quote.

338 Aircon Servicing Singapore provides an extensive range of Aircon Services including Aircon Servicing, Aircon Repairs, Aircon Installation of the best aircon brands, Chemical Overhaul, Gas Top-up, Aircon Leaking Water, and Aircon Not Cold Fix, and more. We have a team of professional technicians who are equipped with vast knowledge and experience in the Aircon industry.

We have over 15 years of experience in dealing with aircon works and have completed thousands of aircon works for both residential (Landed, Condo, and HDB) and commercial. We are a highly recommended Aircon Company in Singapore, with many delighted customers and reviews over the years on Google and Facebook.

WhatsApp us at +65 9222 4141 for a transparent quotation and honest pricing for all your aircon needs or Call us at +65 9222 4141. We offer a fast and efficient service to serve any of your aircon needs!


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