Aircon Chemical Overhaul: What It Is, When Do You Need It & How Much It Costs

posted by: City Cooling Management
June 4, 2025
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Aircon Servicing

If your aircon isn’t cooling as well as it used to, is leaking, or giving off a musty smell, a basic cleaning won’t suffice. You may need a chemical overhaul, especially if the problem lies deep inside the unit.

This guide covers everything you need to know about aircon chemical overhaul in Singapore, including when to do it, how it compares to a chemical wash, and the associated costs, as provided by City Cooling SG.

What Is an Aircon Chemical Overhaul?

Chemical Overhaul Process by City Cooling SG

An aircon chemical overhaul is a deep cleaning service where the indoor unit is fully dismantled. Components such as the fan coil, blower, and drain pan are removed, soaked, and scrubbed using chemical solutions to remove grime, mould, and bacteria buildup. This process restores the aircon’s efficiency and improves the air quality in your space.

By comparison, a chemical wash does not involve dismantling. It only cleans the surface areas of the coil and may not effectively reach deep-seated dirt or thoroughly address internal issues.

Comparison: Basic Cleaning vs. Chemical Wash vs. Chemical Overhaul

Here’s a breakdown of what each service includes:

Service Type	Basic Cleaning	Chemical Wash	Chemical Overhaul
Filter cleaning	✅	✅	✅
Coil cleaning	❌	✅ (without dismantling)	✅ (fully dismantled and soaked)
Mold & bacteria removal	❌	✅ (surface only)	✅ (thorough elimination)
Fan blower cleaning	❌	❌	✅ (fully removed and cleaned)
Drain pipe flushing	❌	❌ (or minimal)	✅ (deep flushing)
Disassembly	❌	❌ (partial, if any)	✅ (complete disassembly)
Suitable for	Light maintenance	Moderate dirt or odor	Severe dirt, odor, inefficiency, leakage

Signs You Might Need a Chemical Overhaul

Clean Aircon After Overhaul by CitycoolingSG

Watch out for these signs that indicate a chemical overhaul is due:

Aircon or piping condensation
Weak or no cooling
Leaking water
Rusty components
Musty or unpleasant odours
Unusual noises (buzzing, rattling)
Ice forming on coils
Increased electricity bills

These issues often stem from internal blockages or buildup that simple cleaning cannot resolve.

When Regular Cleaning Isn’t Enough

Basic servicing works for general upkeep, like filter washing and brushing accessible parts. But for deeper issues caused by dirt, mould, or clogged drainage, a chemical overhaul is more effective.

What’s included in an overhaul:

Full disassembly of an indoor unit
Soaking and scrubbing of fan coil, blower, and drain pan
Deep drain pipe flushing
Use of safe, professional-grade chemicals
Manpower and post-cleaning system test

How Often Should You Do a Chemical Overhaul?

For residential use, it’s recommended to do a chemical overhaul once a year. If your aircon is used frequently or in a dusty environment, consider doing it every 6–12 months to maintain performance and hygiene.

Long-Term Benefits

Fewer breakdowns and lower repair costs
Improved cooling performance and airflow
Lower energy bills due to better efficiency
Elimination of mould and allergens = cleaner air
Longer lifespan for your aircon unit

Transparent Pricing with City Cooling SG

Service Type	Price (before GST)
Chemical Overhaul (9–12K BTU)	$130 per unit
Chemical Overhaul (18K BTU)	$160 per unit
Chemical Overhaul (24K BTU)	$180 per unit
Chemical Wash (no dismantle)	$85 per unit
Chemical Wash (condenser)	$120 per unit

*Final pricing is subject to GST.

🌟 Why Choose City Cooling SG for Your Overhaul?

✅ Experienced Technicians
Our team has over 10 years of experience with all major aircon brands in Singapore.

💵 Transparent Pricing
No hidden charges. What you see is what you pay—clear breakdowns for all services.

🧪 Quality Chemicals Used
We use non-corrosive, eco-friendly chemicals that are safe for your family and pets.

🏠 Trusted by Thousands
From HDB flats to condos to commercial buildings, City Cooling SG has earned the trust of customers islandwide.

Book Your Service with Confidence

Experiencing poor airflow, leaks, or unusual odours? Contact us & let our team handle it with a professional chemical overhaul that gets your aircon running like new.

📞 WhatsApp us now at +65 9123 4567
🌐 Fast, reliable service throughout Singapore

Qualities of a Good Aircon Servicing Company

posted by: City Cooling Management
May 25, 2023
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Aircon Servicing

Having an aircon unit at home or in the workplace can be a blessing in our hot humid climate. They cool down our interiors to make them more bearable, dehumidify the surroundings, and filter the air we breathe. To keep aircons running in optimal conditions, it is essential that we keep them well-maintained. A critical part of aircon maintenance is keeping up with a regular servicing schedule. This is where finding the right aircon servicing company is key.

Aircon servicing companies provide routine maintenance services, aircon repair and replacement, chemical overhauls, and aircon gas refills. Having a trustworthy aircon servicing provider in Singapore we can call on short notice comes with benefits that cannot be taken for granted.

But with so many options on the market, how do we know which one to choose?

To help you out, we’ve explored some of the main qualities to look out for when choosing an aircon service provider below.

1. They Provide Holistic Solutions

Air-conditioning systems are complex and consist of many different components. From condensers to compressors, evaporator coils, and cooling fans, an issue with any one of these parts can cause a number of problems with the entire unit. To accurately diagnose a problem, a service provider needs to have a full understanding of the entire system.

Good aircon servicing companies with strong track records would have already anticipated such needs and are likely to provide a suite of holistic solutions beyond just simple servicing and repairs. Providing end-to-end services, from aircon installation to replacement, indicates that they have a strong understanding of aircon systems, the expertise to improve the efficiency of your unit, and the ability to fix any issues that may crop up.

Learn More: Benefits of having your Aircon Professionally Installed

2. Qualified, Professionally Trained Staff

Any aircon servicing company is only as good as their staff. If they do not invest in the training and development of their technicians, then customers cannot rely on them to identify and fix the problems with their aircon unit.

Aircons are also constantly getting upgraded and new features are constantly being introduced. A good aircon servicing company should aim to stay abreast of such developments and train their technicians accordingly.

When choosing an aircon servicing company, feel free to ask questions about the qualifications and accreditations of their technicians. A good aircon servicing company should have such information on hand and will be glad to relay it to you.

3. Warranty

Providing a warranty on services rendered is the ultimate guarantee an aircon servicing company can provide its customers. It is an indication that they stand behind the work of their technicians and are confident in their ability to deliver consistently good results.

These warranties should include a guarantee on the quality of workmanship and the parts used in the service. The warranty should be clear, easy to understand, and provide you with the necessary information on what is covered and for how long.

Finding a reputable aircon servicing company requires some due diligence on the part of the aircon owner. But putting in the work beforehand can ensure that your aircon unit is maintained by a qualified and experienced technician from an aircon company that provides excellent aircon servicing at a reasonable price.

At City Cooling, our decades of experience with aircon servicing in Singapore has allowed us to build a legacy of trust with our customers. We are committed to providing high-quality services with reliable professionals who have the necessary skills, knowledge, and equipment to carry out their jobs properly. Contact us today to learn more about us and make an appointment with our team.

Aircon Repairing VS Aircon Replacing: Which should you Choose?

posted by: City Cooling Management
May 17, 2023
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Aircon Repair

Many of us don’t appreciate the comfort and cool aircons bring to our life until they malfunction or stop working. Unless you’re willing to brave the hot humid months without relief, the only two options remaining are to either repair the unit or replace it entirely.

While minor issues like water leakage, weak airflow, or a dirty filter can be managed easily, bigger problems that compromise your aircon’s ability to function can be harder to fix. Over time, air conditioning units may also lose efficiency and could take longer to cool down a room.

Like any other electronic appliance, aircons usually have a fixed lifespan and it may be useful to consider whether it is time to upgrade to a new unit. Let’s explore some of the factors involved in making the decision to repair your aircon or replace it.

1. How Long Have You Had Your Aircon?

Aircon units generally have a life expectancy of 15-20 years. This number can vary greatly depending on usage, size, model, maintenance, and climate. It’s not unusual for an aircon unit to last longer than expected and many units do run for years without significant issues.

However older units are more likely to experience more frequent and expensive repairs due to wear and tear. If your unit is reaching the end of its lifespan, it may be more cost-effective to replace it rather than send it for continual repairs. Newer aircon units are also generally more efficient and come with advanced features which older models lack. These upgrades should also be taken into account when considering replacing your current aircon unit.

2. Has Your Aircon Been Well-Maintained?

Unlike many other appliances which are only in use for shorter periods of time, aircons are expected to run for several hours a day. This high level of usage, combined with the way their cooling system works, means that regular maintenance and frequent aircon servicing in Singapore is important to keep your aircon unit in optimal condition.

If your air conditioning unit has been well-maintained and in good condition, repairing it may be a viable option. However, if your unit has not been maintained properly, or has a history of breakdowns, it may be time to get a new one and start fresh.

Learn More: 3 Benefits of Regular Aircon Servicing and Maintenance

3. Comparing Repairing And Replacement Costs

On first glance, repairing an aircon unit rather than replacing it might seem like the cheaper option. But repair fees do add up over time, and a unit that breaks down frequently may run up the costs very quickly. Your current aircon unit may also not be as energy-efficient, which can put an additional strain on electricity bills.

When looking at the benefits of repairing vs replacing, it’s useful to look at the bigger picture. Sometimes it may be better to sacrifice short term savings for long term cost reductions which may be exponentially more beneficial.

Aircon repair vs aircon replacement in Singapore essentially boils down to financial prudence. Newer, well-maintained aircon units benefit from the occasional repair and can be usually relied upon to keep your homes and office cooled efficiently for years before needing a replacement. Older units, or badly-maintained units that malfunction frequently, may not hold as much promise and you might be better off replacing them.

As a highly-rated aircon servicing company in Singapore, City Cooling has a track record of excellence that stretches back decades. Contact us today for all your aircon servicing and installation needs and send us any enquiries you may have.

Everything you Need to Know about Aircon Gas Top Up

posted by: City Cooling Management
May 9, 2023
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Aircon Servicing

Aircon gas, also known as refrigerant gas, is a critical part of your air-conditioning unit’s cooling system. The constant expansion and contraction of the aircon gas is what removes heat from your interior and releases it to the outdoor environment. Aircon gas achieves this by moving through the aircon system in a closed loop.

However, over time small leaks can occur in your aircon unit which leads to a drop in refrigerant levels. When this happens, your aircon is unable to cool your home or office efficiently. This reduced cooling capacity puts a strain on your electricity bills and may wear out the unit more quickly. To help aircon owners learn more about this essential part of aircon servicing and maintenance, here’s a short informational guide to aircon gas top up in Singapore.

1. What Is Aircon Gas Top Up

Aircon gas top ups are exactly what they sound like. Aircon technicians bring in actual canisters of the refrigerant gas used in your unit and refill the pipes. Over time, the metal used in your aircon pipes gets eroded and small holes are created. These miniscule holes provide a way for the aircon gas in your unit to escape.

Low levels of refrigerant force your aircon to work much harder than it should. Keeping your aircon gas refilled and fixing piping leaks are essential aspects of any standard aircon maintenance service.

Learn More: Aircon Piping 101: An Introduction to Aircon Pipes

2. When Is Aircon Gas Top Up Required?

Some signs that your aircon refrigerant gas level is running low include reduced cooling ability, warmer air coming from the aircon fan, increased humidity in the interior, higher electricity consumption, ice buildup on evaporator coil, and bubbling or hissing sounds coming from your unit.

If you notice any of these signs, or other unusual behaviour coming from your aircon, it is advisable to get a qualified technician to take a look at your unit. The price of an aircon gas top up is much lower than what you might otherwise end up spending on future repairs if the problem gets worse.

Other than micro leaks due to wear and tear, other factors that can lead to a loss of aircon gas in your system are improper installation, lack of regular maintenance, and accidental damage.

3. Process Of Aircon Gas Top Up

Topping up refrigerant gas is a straightforward part of aircon servicing. There are a few standard steps which will be followed during the process.

First the technician will inspect the aircon unit to determine if a top up of refrigerant is needed. This is done by checking the evaporator coil and the gas level in your unit. The entire aircon unit will also be looked over to find any leaks, damages, or other issues. If any leaks are found, they will be repaired before moving forward.

Next, the appropriate aircon gas will be pumped into your system with specialised equipment. It’s important to make sure that the right type of gas and amount is put into your aircon to avoid running into more issues later on.

Once the aircon gas top up is done, the technician will test the system to ensure that it is functioning properly. Other components of the aircon will also be checked to make sure that there are no other malfunctions.

On a long enough timescale, all aircon units will likely leak gas at some point. It is a routine issue that is frequently encountered and shouldn’t pose any real cause for concern. A simple call to a certified aircon servicing company should take care of the issue and keep your aircon in good working order. Ideally, aircon owners should look to schedule annual maintenance for their units to anticipate such problems, and fix them before they become worse.

As a reliable and affordable aircon service provider in Singapore, City Cooling aims to provide the best possible experience for all our customers. Contact us today to learn more about our services and make an appointment with us.

Tips and Tricks to Prolong the Longevity of your Aircon

posted by: City Cooling Management
April 26, 2023
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Aircon Servicing

Air conditioners have become an indispensable appliance in any modern household or office. They help to regulate the room temperature and create a comfortable environment, especially during hot and humid weather conditions. They can also improve indoor air quality and promote better health.

However aircons can be expensive to replace and aircon installation in Singapore is not cheap. A malfunctioning aircon may also directly increase your electricity bills in the long term without you even realising. To save on costs, owners should prioritise taking care of their aircon units to prolong their longevity. Here are some tips and tricks to help you do just that.

Give your aircon a break

One of the simplest ways to prolong the longevity of your aircon is by giving it a break every so often. While it may be tempting to keep your aircon running continuously, especially during the hottest months of the year, this can put a strain on the unit and cause it to wear out much faster. Additionally, running the aircon all the time leads to higher electricity bills, which can be costly in the long run.

Instead, what you can do is to try and use your aircon in moderation. For example, you could turn it off when you leave the room or during cooler parts of the day. This can help to reduce the strain on the unit and prolong the lifespan of your aircon unit.

Ensure regular servicing and maintenance

Another key factor in prolonging the longevity of your unit is regular aircon servicing and maintenance. Over time, dust and debris can accumulate inside the aircon, which can cause it to malfunction or even break down. Additionally, regular maintenance can identify potential issues early on, before they become more serious and the costs involved in repairing the unit increase significantly.

To ensure that your aircon is properly maintained, it is important to schedule regular servicing appointments with a professional. During these appointments, a technician will clean and inspect the unit, replace any worn-out parts, and ensure that it is functioning properly. This can help to extend the life of your aircon and save you money in the long run.

Engage a professional during installation

When it comes to aircon installation, it is essential to engage a professional. Proper installation is key to ensuring that your aircon functions optimally and lasts for as long as possible.

A professional aircon installer will be able to determine the appropriate size and capacity for your unit, as well as ensure that it is properly positioned and connected to your home or office’s electrical system. Additionally, they will be able to offer advice on how to properly maintain your aircon, including tips on cleaning and filter replacement.

Unlike some other appliances, aircons are running continuously for several hours in a day. When temperatures soar, they are forced to work harder to cool the room down. But often the aircon is underappreciated and taken for granted, until the system breaks down. To avoid such situations and get the most out of your unit, the simple steps outlined above can go a long way in prolonging its lifespan.

At City Cooling aircon we are dedicated to empowering you to get the most out of your aircon. Contact us today to learn more about our services and make an appointment with our team of professionals.

Aircon Piping 101: An Introduction to Aircon Pipes

posted by: City Cooling Management
April 11, 2023
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Aircon Piping

Whether in our homes, offices, or cars, air conditioning has become an essential aspect of our lives. It allows us to be more productive and lets us rest in cool comfort. It has become so ubiquitous in our environment that most people don’t spare much thought for what goes on under the surface of an air conditioning unit.

Understanding how an aircon unit cools down a room can be useful as it gives us insights into potential breakdowns and lets us stay a step ahead when it comes to maintenance and aircon servicing. It also allows us to make more informed decisions in terms of installation and replacement.

To get started on learning more about how air conditioning works, we’ve put together a short guide about how piping works in an aircon unit, and why you should keep an eye out for signs of potential failure.

Introduction to Aircon Piping and its Importance

Aircon piping is a vital component of an air conditioning system. Pipes transport refrigerant throughout the entire system and drain away accumulated condensed water. Once a pipe has begun to leak, it is recommended that you schedule an aircon pipe replacement as soon as possible to avoid running into more problems down the road.

Good aircon piping makes your aircon unit run more efficiently, while also regulating the temperature of the environment, and keeps the air clean and free of dust and other contaminants. Properly installed and maintained, aircon piping reduces energy consumption and costs, making it an excellent investment in the long run.

Copper Pipes and Water Pipes

When people refer to aircon pipes, they may be talking about two different piping systems within the aircon unit. Most aircon pipes in residential and commercial systems today utilise both copper pipes and water pipes in their functioning. These are known as split-type aircon systems.

Copper pipes are durable, resistant to corrosion, and easy to install. They are also highly conductive, allowing for efficient transfer of heat and refrigerant, making them a popular choice for aircon piping. Generally copper pipes can last for years before requiring an aircon pipe replacement, but this can vary depending on several factors.

Water pipes, on the other hand, are more often used in water-cooled systems. These systems use water as a coolant instead of refrigerant, making them more energy-efficient and better for the environment. Water pipes are typically made from PVC or other types of plastic material, making them lightweight and easy to install.

When to Replace Your Aircon Pipes:

Despite their durability, aircon pipes are not immune to wear and tear. Over time, aircon pipes may develop leaks which can affect the efficiency and performance of your air conditioning unit. To avoid this you should prioritise aircon servicing in Singapore, as even small leaks can get worse over time and lead to system failure.

Stains on your aircon pipes are a sign of a refrigerant leak. Refrigerant leaks can cause your air conditioning unit to work harder, resulting in higher energy bills. They can also cause damage to the compressor and other components. If you notice stains on your aircon pipes, it is important to have them inspected by a professional and replaced if necessary.

Other signs that your aircon pipes are leaking include condensation on the pipes, water pooling around your unit, or noticeable decreases in performance. Some condensation is to be expected during normal operation of your aircon. However excess condensation can lead to corrosion and other types of damage to your aircon pipes.

With how essential aircons are to our daily lives, it’s good to stay ahead of maintenance and aircon servicing schedules. Aircon pipes are less likely to leak if properly cared for, and getting a professional tune up every few months can ensure that your aircon unit is in good working order. By preventing leaks you can save money on future repairs, keep your energy bill lower, improve indoor air quality, and extend the lifespan of your aircon.

As experts in aircon installation, servicing, and replacement, City Cooling aims to provide all our customers with professional, high-quality aircon servicing experience. Contact us today to learn more about what we do and schedule an appointment with our team.

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