
An aircon chemical overhaul is a thorough cleaning and restoration process that involves removing dirt, dust, and other contaminants from the air conditioning system. This process can improve the system's efficiency and longevity.
The overhaul procedure typically takes several hours to complete, depending on the size and complexity of the system. A typical overhaul can cost anywhere from $500 to $2,000, depending on the type of equipment and the extent of the work needed.
During the overhaul, the aircon technician will drain the refrigerant from the system and replace the air filter, as well as clean the condenser coils and evaporator coils. This process can help to remove any blockages or debris that may be hindering the system's performance.
Regular maintenance is key to extending the life of your aircon system. By scheduling regular chemical overhauls, you can help to prevent costly repairs and ensure your system runs at its best.
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What Is an Aircon Overhaul?
An aircon overhaul is a process that deep cleans your air conditioning system, removing dirt, grime, and other contaminants that can reduce its performance and efficiency.
The average aircon unit can accumulate up to 1 ton of dirt and debris over its lifespan.
A chemical overhaul is a type of aircon overhaul that uses specialized cleaning agents to break down and remove tough stains and deposits.
This process can improve air quality by removing bacteria, fungi, and other microorganisms that can thrive in a dirty aircon system.
Regular aircon overhauls can extend the life of your aircon unit by preventing premature wear and tear.
Aircon overhauls typically involve the use of compressed air, vacuum cleaners, and other specialized equipment to remove debris and dust from the system.
A well-maintained aircon system can save you up to 30% on your energy bills by running more efficiently.
The cost of an aircon overhaul can vary depending on the size and complexity of the system, but it's often more cost-effective than replacing the entire unit.
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Reasons for an Overhaul
Your aircon unit needs a chemical overhaul when it fails to cool properly. This can be due to the accumulation of dirt, dust, or mold in the inner components, which hinders its ability to cool properly.
A chemical overhaul is a thorough and deep cleansing and inspecting procedure that ensures your aircon is functioning at the optimum level. It uses high-quality chemicals and solutions to clean every part of the aircon.
The process involves removing all dirt and debris that might have accumulated in the fan evaporator coil, resulting in better dissipation of heat and better performance.
Why Is It Important?
A chemical overhaul is a must for your aircon if you want it to perform at its best. It's a thorough cleaning and maintenance procedure that ensures your aircon is functioning optimally.
The process involves dismantling the air conditioning unit from the wall, which allows for a deep cleanse of all its parts. This includes cleaning the air filters with chemicals to prevent allergies and breathing problems.
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Chemical overhaul is necessary when normal cleaning of the machine doesn't restore its function. It's a step to take when you notice a problem or reduced performance in your aircon.
During a chemical overhaul, the fan bearings are lubricated to prevent a noisy air conditioning system. This is a crucial step that ensures your aircon runs smoothly and quietly.
A chemical overhaul also involves checking the control and thermostats, testing and commissioning the system, and flushing and cleaning the drain pan and pipe.
Here are some reasons why chemical overhaul is important:
- The most significant factor is that it's a thorough and deep cleansing and inspecting procedure.
- All the dirt and debris accumulated in the fan evaporator coil is completely removed, resulting in better dissipation of heat and better performance.
- A chemical overhaul helps in prolonging the lifespan of the aircon by preventing probable faults.
- The whole process uses high-quality chemicals and solutions that ensure thorough cleaning of every part of the aircon.
Overall, a chemical overhaul is a small price to pay for a cleaner, more efficient, and longer-lasting aircon. It's a worthwhile investment that will save you money on electricity bills, maintenance, and part replacements in the long run.
When to Get a Repair?
If your aircon unit fails to cool properly, it's time to get it checked. This is a clear sign that it needs a repair.

You should also consider a repair if your aircon unit releases bad smells or leaks water. These issues can be a sign of a bigger problem.
Performing a repair every one to two years is a good idea, especially if you use your aircon frequently. This can help prevent bigger issues from arising.
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The Overhaul Procedure
The overhaul procedure for an aircon chemical overhaul is a meticulous process that requires a skilled technician to ensure it's done correctly. The first step is to dismantle the aircon from the wall, which involves disconnecting the electric wiring and connections of the drain pipe from the fan coil unit.
The fan coil unit is then dismantled from the wall, and all remaining parts of the aircon are taken apart, including the electrical circuit board, evaporator coil, fan motor, blower, and the drain pan. This thorough dismantling allows the technician to access and clean every component.
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The technician will brush off the electrical board and fan motor to clean them properly, and inspect the electrical board for any short circuits or burnt parts. This attention to detail is crucial to prevent any future issues with the aircon.
The next step is to wash some parts of the aircon using specialized chemicals, such as an alkaline chemical to handle corrosion. The chemical is poured onto the parts, allowing it to break down the dirt and grime that has accumulated over time.
The technician will leave the chemical on the parts for a few minutes to allow it to dissolve the stubborn stains and dirt particles. After the chemical has done its job, the parts are washed with water to remove any remaining chemical solution.
During this time, the technician will clear the drainpipe by using a vacuum or flushing device, and also vacuum the refrigerant piping system to remove any dust and particles. This ensures that the aircon is completely clean and free of any debris.
Once all the washed parts have dried, the technician will reassemble all the components of the fan coil unit and install it back into the wall. A final check is made to ensure there are no leaks, especially at the fan coil flaring joint.
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The aircon is then turned on for a test run to ensure everything is working correctly. The technician will check for any leakage, foul smell, or unusual noise, and make any necessary adjustments before completing the overhaul.
Here's a summary of the steps involved in the overhaul procedure:
- Dismantle the aircon from the wall
- Disconnect electric wiring and connections
- Dismantle fan coil unit from the wall
- Dismantle remaining parts of the aircon
- Clean electrical board and fan motor
- Use specialized chemicals to wash parts
- Clear drainpipe and refrigerant piping system
- Reassemble fan coil unit
- Install fan coil unit back into the wall
- Test run the aircon
Maintenance and Cleaning
Regular maintenance of your aircon is crucial to keep it running smoothly and efficiently.
You should clean the air filters every 1 to 2 months to prevent dust and microscopic particles from clogging them.
Dust and dirt build-up on various parts of the air-conditioning system can affect its smooth working and compromise the quality of air blown inside the room.
Cleaning the fan coil unit is essential, as it tends to have a lot of dirt and mold build up, which can be done by a technician using a special chemical solution.
The chemical cleaning process cleans specific parts of the aircon without full disassembly, but chemical overhaul requires taking apart the entire unit to clean all components thoroughly.
During a chemical overhaul, technicians clean the whole system, including the evaporator coil, condenser coil, blower wheel, drain pan, and filter, with appropriate chemicals.
Regular maintenance can help prevent allergies and breathing issues caused by dust and dirt particles blown inside the room.
It's recommended to do regular maintenance and cleaning of your aircon system at least once a year, irrespective of whether you suspect a fault or problem in the aircon or not.
A chemical wash is a thorough form of cleaning that involves dismantling and washing all parts of the aircon with a chemical-based solution to target hard buildup of dirt and dust.
Chemical cleaning can be done at least twice a year to control energy bills and keep the aircon working smoothly for many years.
If you neglect regular maintenance, your aircon parts may be subject to more wear and tear, resulting in costly repairs or even replacement.
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Benefits and Costs
A chemical overhaul can thoroughly clean your aircon unit, removing mould, mildew, and fungus, which results in spore-free and germ-free air. This is especially beneficial for people with allergies, asthma, or other respiratory issues.
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By identifying and fixing even the smallest problems, a chemical overhaul can improve your aircon's performance and life. Regular maintenance can also help you avoid costly repairs down the line.
A chemical overhaul can help reduce your energy consumption and electricity bills by ensuring smooth operation of the system. This is because every part of the system works at its optimum level, increasing efficiency.
Here are some key benefits of a chemical overhaul:
- Improved air quality
- Increased efficiency
- Reduced energy consumption
- Lower electricity bills
- Extended aircon life
Lower Electric Bills
A chemical overhaul can significantly reduce your energy consumption and electricity bills. By effectively maintaining the aircon units and checking all the moving parts, the process results in smoother operation of the system.
This, in turn, means the aircon won't have to work harder to maintain its performance, leading to controlled electricity bills. In fact, a chemical overhaul can help you save money on your electric bills.
According to various sources, a chemical overhaul can increase the efficiency of the aircon system, making it consume less electricity. This is because the process eliminates blockages, removes bacterial and mold, and enhances airflow, all of which contribute to improved performance.
Here are some estimated benefits of a chemical overhaul on your electricity bills:
* Reduced energy consumptionLower electricity bills
By considering a chemical overhaul at least once a year, you can enjoy these benefits and keep your aircon running at its peak level.
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Is 8 Safe for My Aircon?

Professionals use safe chemicals to perform this aircon servicing, making it completely safe.
Chemicals used in aircon servicing are specifically designed to be non-toxic and won't harm your aircon or the environment.
The chemicals are carefully selected to ensure they don't cause any damage to the aircon's components.
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Price Range
The cost of maintaining your air conditioner is a crucial consideration.
The price range for a chemical overhaul is quite broad, depending on the type, model, and size of your air conditioner.
In Singapore, you can expect to pay between SG$100 to SG$450 for a chemical overhaul.
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