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Aircon Servicing and Repair Technician Cheating Customer

Aircon Technician Cheated his Company and Customer

This is a case of how one of CitiCool’s new customer was cheated by her previous aircon servicing and repair technician.


Aircon Servicing and Repair Technician – 1st Visit


This customer engaged XX Company to perform chemical wash for the fan coil in her master bedroom.  After completing the chemical wash, the aircon servicing and repair technician told the customer that her fan coil he did chemical wash service has some problem already.  He told her the fan coil will spoil anytime.  He advised her that it is better to swap another fan coil from another room which she seldom uses over to the master bedroom. He told her that he can help her to do the swapping at a discounted price but she MUST AGREE TO PAY HIM DIRECTLY without billing through his company.

The customer thought this is a way she can save money.  She agreed to pay him directly for helping to swap the air conditioners.  He pocketed the money for this service without billing through his company.  He told the customer in future she should call him directly for any aircon service as he can charge her a much cheaper rate then his company.

The nightmare for the customer started.  Her air conditioner started to have cooling problem.  It’s not releasing cool air for the room.


Aircon Servicing and Repair Technician – 2nd Visit

She called the same aircon technician directly and he told her there is insufficient aircon refrigerant.  He helped her to top up gas.  He pocketed the money without billing through his company.


Aircon Servicing and Repair Technician – 3rd Visit

After a short while, the customer had to call the same technician in again for the same problem.  He did the same thing, top up gas and pocketed the money.

The same “aircon not cold problem” started again.  She called the same technician.  This time he told her that there must be a gas leak somewhere.  He said that he would need to do a pressure test to identify where’s the leakage.  He told her that he can charge her S$200 only for the pressure test.

After hearing S$200 for pressure test, she started to hesitate.  She started to think wisely: “If this aircon technician can cheat his company, maybe his also cheating my money.   She started to source around for another aircon technician.  Her friend recommended her to call CitiCool.


Aircon Troubleshooting by CitiCool

The customer called and told CitiCool’s aircon professional over the phone the entire story about the chemical wash, aircon swapping, aircon gas top etc her previous technician did for her.  After hearing her problem, CitiCool’s staff told her most probably when her previous aircon technician swapped the fan coil, he did not tighten the joints properly.  However, CitiCool need to do a site visit to check her air conditioning system to confirm if we were right.

CitiCool’s aircon servicing and repair technician went to her house for a complimentary aircon troubleshooting.  True enough, our aircon technician diagnose that the flarenut joints were loose and not tightened properly.  This is the reason for the refrigerant leak.  Our air con technician tightened the flarenut joints and her “air conditioner not cold” problem was easily resolved.

From the above case, we concluded that the aircon servicing and repair technician had cheated this customer.  This is because he went down twice to top up gas for her air conditioners.  During these visits, he should have checked the joints as he was the person who did the swapping of the fan coils.  When there was insufficient gas, he should have suspected that the gas leak through the joints which he did not tighten properly during the swap. 


Do Not help any aircon techician to cheat their company

We advise all aircon users not to help their aircon technician to cheat their company by not billing through the company.  If you helped dishonest aircon technician to cheat their company, you are also cheating the company at the same time.  In addition, since the person you are paying money to can cheat their company, most likely they will also cheat you.

In addition, we also advise all aircon users to engage experience and competent air conditioning company for their aircon problem.  Many of our new customers had experienced paying unnecessary money to their previous aircon vendor either because the technicians doing the troubleshooting is inexperience or they helped their company to cheat customers.  Be a smart aircon consumer and choose the right company to help resolve all your air conditioning problems.


DIY Checking and DIY Aircon Repair

CitiCool’s website has many articles and videos to assist customers to do simple troubleshooting for their own aircon problems.  We also have aircon repair tips and solutions to help customer solve easy to solve problems.  Refer to these articles and videos before you engage any aircon professionals.  





Air Conditioner Problems FAQ

Air Conditioner Problems FAQ

Common air conditioner problems FAQ

When the air conditioner starts to have problem, some problems can be easily fixed by the users themselves but some problems require the help of a professional.  Therefore, it is good to find out what is causing the problem first before you consult a professional.  In this post, we try to provide a list of common questions that air conditioner users may encounter when their aircon have problems.  We also try to provide solution to the problem if we think that it is easy for the user to fix the problem without the need to engage a professional.  One of our most useful guide for DIY checking and problem solving come with pictures and video and this can be found in question number 2 below.

FAQ on air conditioner problems for Indoor Unit




1. Why is the air released from the air conditioner outlet not cold ?

Some of the common causes for air conditioner not cold include but are not limited to :

  • Wrong remote control setting – setting temperature too high or not setting temperature to COOL mode.
  • The capacity of the aircon installed is too small for the room.
  • Air conditioner parts (eg filter, fan motor, evaporator coil, etc) are dirty.
  • Air inlet/outlet of FCU or condenser has been blocked by objects.
  • Fan blower is blocked with dust causing cool air to be blocked and can’t be released or blown out.
  • Certain parts in the aircon is faulty.
2. Can you do a DIY check on why your air conditioner is not cold?

Yes you can. Just follow CitiCool’s DIY Aircon Checking Guide.

3. Why the fan coil cannot start when you try to switch it on?

Some common reasons why you can’t switch on the fan coil include:

  • Remote controller is faulty or its battery is weak and need replacement.
  • Fan coil receiver/infrared ray is faulty.
  • Fan coil have no power supply.
  • Power supply trip in the premise.
4. Why the remote control can’t switch on the air conditioner?

This could be due to any of the following problem:

• Printed circuit board of the remote control is faulty.
• Printed circuit board of the fan coil is faulty.
• Fan coil receiver is faulty.
• Broken Wire.

To check whether the problem lies in the remote control or fan coil, test the remote control by using it to switch on other fan coils units.

5. What causes the air conditioner to switch OFF on its own and the indicator light keeps blinking?

When the indicator light keeps blinking, it is a symptom that the aircon is faulty. Therefore, the air conditioner starts to switch off on its own. You are advise to seek a professional aircon technician to troubleshoot on how to resolve the problem.

6. What cause the air conditioner to switch ON and OFF on automatically?

The indoor printed circuit board which controls the operation of the fan coil is faulty already. You will need to replace the printed circuit board.

7.  Is it possible to repair faulty printed circuit board (“PCB”)instead of replacing it with a new one?

Most of the time, it is possible to repair faulty PCB. However, the decision on whether you should repair or replace the PCB depends very much on the cost effectiveness to do so. Normally Citicool will advise client on which part is faulty. We will advise client whether it is more cost effective to do a repair or replacement. Normally, our advice depends on the age and condition of the PCB and the part that is faulty.

8.  Why your remote control doesn’t show the temperature setting?

This is because the remote control only show the temperature when it is set to COOL mode.

9. Why does the fan coil indicator light switches from two to one lighting?

This happens when the room temperature has reached or is closed to temperature setting in the remote control. It could also be due to wrong remote control setting.

10. How to cool the room at a faster speed?

To cool the room at a faster speed, just switch the remote control to a high fan speed for the air conditioner to reach the temperature faster.

11. What causes water to leak from the fan coil?

When installing air conditioner, a drainage pipe build into the fan coil to help carry water from the fan coil to the nearest drain available. Therefore, the drainage pipe helps to transport and discharge water from the fan coil. Once the drainage pipe is accumulated with too much dirt, water will start to build up in the blocked area of the drainage pipe. Since the water can’t be transported away to the drain, soon it will overflow and leak out from the fan coil instead.
When installing air conditioner, it is important to make sure that the running of the drainage pipe from the fan coil to the drain is done with a proper gradient. This is because poor installation of the drainage pipe can result in water leaking problem.

For more information relating to aircon leaking water, refer to the following page:  FAQ on aircon leaking water

12. What causes ice to form on the fan coil unit?

Either there is insufficient refrigerant or the air filters, cooling coil or fan motor are dirty.

13.  What makes the fan coil unit (FCU) to produce a foul smell?

The FCU does not produce any odour on its own. Generally, bad odour is absorbed into the FCU over time and the smell is discharged through the air flowing out from the air outlet.

Usually, the smell comes from mold and mildew that grow on the evaporating coil and drainage pan. As the mold and mildew proliferate especially when there are abundant of moisture, it will discharge foul smell through the air outlet. This is the reason why aircon servicing is required to maintain the cleanliness of the air conditioner system for it to release clean air.

14. What causes the fan coil unit (FCU) to become noisy?

Normally, if the fan coil become noisy, most likely the internal component such as the blower or evaporating coil is dirty and require either general servicing or chemical wash.




FAQ on air conditioner problems for Outdoor Unit




1. What causes water to drip from the condenser?

It is very normal to see water to dripping from the condenser. This happen when the air surrounding the piping condense. (i.e. turning from gaseous form to the liquid form). To prevent the water from dripping onto your neighbour’s outdoor unit, you can install a drainage kit.

2. What causes the condenser (outdoor unit) to become noisy?

There are many factor leading to the outdoor unit becoming noisy.  Some of these include but are not limited to:

  • Loosen parts, loosen wire or screws not properly tightened.
  • Absence of rubber padding beneath the outdoor unit.
  • Leakage of refrigerant or refrigerant valves are damaged or sound from refrigerant pipes vibration.
  • Compressor is worn out or faulty.
3. What causes the condenser to stop operation while the fan coil unit is still operating ?

Once the room temperature reaches the temperature set in the remote controller, the condenser will stop operating. When the temperature in the room rises, the condenser will resume its operation again.

4. When do you need to perform pressure test on an aircon system?

If your aircon always have gas leakages, there is a need to identify the leaking area and seal it up. Pressure test is use to identify the section where the leaking take place. This is done by inducing high pressure into the condenser, fan coil as well as the piping of the refrigerant. Once the location of the leaking is identified, the technician would need to perform repair work to seal the leakage area.




Some articles relating to air conditioner problems

FAQ on AC Condenser noise and repair 

FAQ on aircon leaking water

When does your aircon requires chemical wash?

What you need to know about aircon gas top up?

If you have a question relating to your air conditioner but couldn’t find the answer in the list of FAQ provided above, do feel free to give us a call.

Contact Us

Office Mainline No: Tap no. on hp to Save no. 6876 0581

Whatsapp No: Tap no.  on hp to Call  9272 6997

Air Conditioning Service FAQ

Air Conditioning Service FAQ

Air Conditioning Service FAQ

Instead of engaging an air conditioning service company to do the job, you may like to check if there is any DIY aircon checking or cleaning you can do by yourself.  Yes, there are many things that you can actually do on your own.  However, you may need some guidance.  In this page, we provide lots of useful information relating to DIY cleaning and DIY checking on your aircon problems.  Read the questions and answer in this page and you will definitely be more knowledgeable on your air conditioning service requirements

Air Conditioning Service FAQ – General Aircon Servicing


 1.  Can I perform a DIY general air conditioning service at home?

You may be able to perform certain steps such as opening and removing the fan coil cover and air filter for cleaning. However, some people find it tough to remove the water tray and air blower. Cleaning the evaporator coil is not an easy task for most people as it need to be done at height. While cleaning the cooling coil, you will definitely be exposed to dust and dirt flying all over unless you do it with proper technique. Therefore, DIY general air conditioning service is not appropriate for people who are allergic to dust. People with such allergic may fall sick due to exposure to dust while cleaning the air conditioner.

As for vacuuming of drainage system and checking of refrigerant level, you would need to have the proper equipment and knowledge to do the job. As it is quite tough for a layman to perform general air conditioner servicing, it is more advisable to engage a professional to perform the entire job for you.

 2.  What is the cheapest way to maintain you air conditioner regularly?

You can engage CitiCool to do the general air conditioning service for you. Note that if you sign up a service maintenance contract to engage CitiCool to clean your air con at least twice a year, the pricing come with a very good discount. That is why most of our existing customers rather sign a service maintenance contract with us.

If you are not engaging an agent for your air conditioning service on a monthly basis, You may want to DIY some basic steps of the servicing yourself on a monthly basis.

You can also watch our video to see how we do general air conditioning service. Normally, it is quite easy for you to regularly remove the air filter and clean it with water and brush away all the dirt and dust. However, if you are sensitive to dust, it is advisable not to do it yourself.

My air conditioner is not cold. Can I do a DIY check to determine what is the problem?

Yes, you can do a DIY check on your air conditioning problem. We provide step by step guidelines on how you can do so.  Refer to this page for a clear guide:   Aircon DIY Checking

 3.  Your air con is new but there is a smell coming from the air con. What should you do?

Certain brands of air conditioner may have this problem. The advice given is to switch the air con to fan mode for 15 to 30 minutes daily just before you switch off your air conditioner after using it. If you do this continuously, the smell will be gone between 1 to 3 weeks.

 4.  What is going to happen if you do have any air conditioning service done on your air conditioner?

Periodic air conditioning service helps to prolong the life span of an air con system. If you do not service your air con regularly, soon your air con will be accumulated with dust, dirt and debris. These pollutants will affect the efficiency of the air con in producing clean and cold air.  As the system start fighting with clogs and blockages to produce cool air, it will start to increase its energy consumption. As the situation worsen, your air con will start to have all kinds of problem such as water leakage, air discharge is not cold and the system becomes very noisy etc. Overtime, these problems will also contribute to components in the fan coil or condenser becoming faulty. Ultimately, both the efficiency and life span of the air conditioner will be affected.

5.  What is the recommended maintenance frequency for general air conditioning service ?

The appropriate frequency for maintaining your air conditioner depends on the extent of usage and the surround environment when the air con is installed. Generally, we recommend performing the following maintenance:

Home/Residential air con – perform general air conditioner servicing every 2 to 3 months.
Commercial/Office air con – perform general air conditioner servicing on a monthly basis.



Air Conditioning Service FAQ – Aircon Chemical Wash


6. Can you perform DIY for chemical wash?

When performing chemical wash, the entire fan coil unit must be removed from where it is installed. The whole fan coil unit needs to be dismantled so that individual components in the fan coil can be thoroughly treated with chemical solution. Thorough rinsing is required so as not to leave behind any chemical residue. Chemical residue trapped in the fan coil can corrode its components.

You also need technical knowledge and proper equipment to handle the refrigerant when performing chemical wash. The entire process is very complicated. Therefore, DIY for chemical wash is not advisable unless you have the relevant technical knowledge and equipment to do a proper job.

Watch our video below to see how Aircon Chemical Cleaning is performed:



7.  Why does the pricing for air conditioner chemical wash vary so much in different company?

Different companies perform chemical wash differently. It is important to check the scope of work included in the chemical wash process instead of just going for the cheapest rate. Beware of chemical wash that are performed onsite without removing and dismantling the entire fan coil unit. Such procedures are not advisable because it is difficult to remove chemical residue trapped in the fan coil by rinsing it onsite. Once the chemical are trapped in your fan coil, it will cause the parts in your air con to corrode.  Once the parts corrode, the fan coil will start to have all kinds of problem.  This will also shorten the life span of your air conditioner.

8.  Sometimes after chemical wash, the air coming out from your air conditioner is very smelly. What should you do?

This is because before the chemical wash, the fan coil unit already is already infected with mold or algae growing on it. The smell may not be so obvious to you before the chemical wash.  However, the smell becomes very obvious after the chemical wash although the chemical wash already help to remove these smelly substances. (Note that this normally happen only on certain brand of air conditioners.)

To get rid of the smell completely, you need to switch on the air conditioner and open the door or window in your room so that the smell can be dispersed off.  After a while (normally around 2 hours), the smell will be gone completely.

 9.  How do you know whether you air conditioner need general air conditioning service or chemical wash?

For residential unit, we would recommend our clients to perform chemical wash on their air conditioner at least once a year. However, frequency of servicing required really depends on the extent of usage. You can do a Do IT Yourself (DIY) Check to determine which is more suitable for your air conditioner.

Watch our watch on how to DIY check on what are the type of air conditioning services that your air conditioner requires.



Although CitiCool always provide lots of DIY Air Conditioning Service advice to our customers, our customers always come back to me for more questions or engage our service. You are always welcome to contact us if you have any query relating to your air conditioning service requirements.

Contact Us

Office Mainline No: Tap no. on hp to Save no. 6876 0581

Whatsapp No: Tap no.  on hp to Call  9272 6997

AC Condenser Noise & AC Condenser Repair FAQ

AC Condenser Noise & AC Condenser Repair FAQ

What is an ac condenser ?


An ac condenser is an outdoor unit which houses the compressor.  It is so known because it is normally placed in an open area or environment. The ac condenser is basically a machine playing the role of a heat exchange or heat transfer.  In fact, if you ever walk pass an operating ac condenser, you will feel very hot because of the hot air being blown out by the condensing fan.  Actually, it is advisable to place the ac condenser in open and airy area because it will help in facilitating its function of transferring heat to the outdoor environment.  Some people even try to place their ac condenser under shady areas in their garden. However, note that it is important to make sure the ac condenser is clear of any debris or rubbish which may obstruct its heat transfer.

How does the ac condenser transfer heat?


Heat is absorbed by the evaporating coil (also known as cooling coil) found in the indoor unit (also known as fan coil).  The heat absorbed by the evaporator coil is then transferred via the refrigerant in the aircon system to the ac condenser for dispersion.  The ac condenser has a condensing fan which serve the purpose of blowing out the heat to the outdoor environment at a faster speed.

What causes ac condenser to be so noisy?


When your air conditioning system is on, there bound to be a small amount of bearable sound coming out from the condenser. However, sometimes you may start to hear different types of loud, wierd and unusual noises coming out from the condenser.  When this happens, most likely certain key component in the condenser is malfunctioning. The different types of noises produce by the ac condenser provide useful symptom telling you which part of the condenser might have problem. Before we go into further details, lets understand what is an ac condenser made of first.

An ac condenser is made of the following key components :

  • Compressor(s);
  • Condensing coil;
  • Fan motor;
  • Refrigerant/Freon Gas;
  • Solenoid(s) and
  • Valve(s) (flow control device);

All the above components are integrated with inter connected electrical parts, piping and tubes.  The minute any of the above components becomes defective, the condenser will start to produce different types of strange noise. The character of each type of noise produced by the condenser provides an indication on which component is not working well.  Next, we will try to classify the different types of possible noises that a problematic ac condenser can produce.


What are the common noises produce by a problematic ac condenser?


The following are some common noises you may hear coming from a problematic ac condenser.  The noise includes but are not limited to the following:

a. humming – a low continuous sound
b. hissing – a sound like a long “s”
c. buzzing – a long continual sound
d. rattling – a short sharp knocking sound
e. banging – a sudden loud noise
f. clicking – a short sharp sound
g. screaming – very loud high-pitched sound
h. squealing- a long high-pitched sound

Why does ac condenser produces humming sound?


If your hears a loud humming noise (i.e. a low continuous sound)  from your AC condenser, the problem could be due to:

  • the compressor cushion has worn off;
  • the compressor internal component parts has worn out; or
  • the compressor capacitor has become faulty.
Solution:  Once you ascertain exactly which of the above part is faulty, replace it with a new part.  You can also source for a used part that is still working.  Once the faulty part is replaced, the humming sound should stop.

Why does ac condenser produces hissing sound?


If your AC condenser produces loud hissing noise (i.e. the sound of a long “s”), there are two possible causes.  First, it is likely that there is an internal blockage in the condensing coil.

Solution:  Clean the condensing coil and remove all the clogs and blockages.

If you have diligently cleaned away the dirts and clogs on the condensing coil but the hissing sound problem is still there.  The next possibility is that there is a leakage of refrigerant or the refrigerant valves may be damaged.

Solution:  Once refrigerant is involved, it is more advisable to engaged a professional to diagnose and solve the problem.

Why does ac condenser produces buzzing sound?


If your AC compressor produces loud buzzing noise (i.e. a long continual sound), it is an indication of a more serious problem. Either the motor, electrical component in the condenser has failed or the wire in the condenser has loosen.

Solution: Dealing with electrical components poses a higher risk and danger as there is a possibility of fire risk. Therefore in the event that your AC produces loud buzzing sound, we would recommend that you to contact a professional to help you solve the problem instead of fixing it by yourself.

Why does ac condenser produces rattling sound?


If the noise is a rattling sound (i.e. a short sharp knocking sound) , there are several likely causes.

First, most likely there is some problem with the condensing fan.  However, if the above effort does not solve the problem, there is a likelihood that the fan motor bearing is burnt out or the starting capacitor has become defective.

Solution1:  For condensing fan problem – normally cleaning the fan or re-aligning the fan will solve the problem.  For defective fan motor or starting capacitor – replace the defective parts.

Second, rattling sound from the condenser can also be caused either by loose parts, or shaking of the internal tubes.

Solution2:  Tightening the loose parts will solve the problem.

Third, rattling sound could also be due to the refrigerant level is too high or the wrong refrigerant type being used.

Solution3: If the problem is due to wrong refrigerant level or type, it is more advisable to engage an aircon professional to diagnose and solve the problem.

Why does ac condenser produces banging sound?


If the noise is a banging sound (i.e. a sudden loud noise), there could be loosen parts, i.e. piston pin, internal mount or even the crank shaft in the aircon compressor could have loosen. This could be an indication that the compressor lifespan is almost up.

Solution:  Replacement of compressor may be required.

Why does ac condenser produces clicking sound?


If your AC compressor starts to produce a persistent clicking sound (i.e. a short sharp sound), it could be due to loose parts or dirty fan.

Solution1: Tighhen the loose parts and clean the dirty fan.

If tightening the parts and cleaning the fan does not work, then there could be a bigger problem such as the followings:

  • control board is damaged;
  • thermostat wire is shorted; or
  • thermostat is broken.
Solution2: Handling the above components is very dangerous due to high risk of electrocution.  Therefore your should contact a professional to perform troubleshooting and help with the repair or replacement of parts.

Why does aircon condenser produces screaming sound?


If your AC compressor starts to produce unbearable screaming sound (i.e. very loud high-pitched sound) it is normally due to strong internal pressure due to a number of factors such as clogging, failed bearing or motor failure.

Solution:  It is advisable to engage a professional to troubleshoot and check which is the reason for the screaming sound.

Why does your ac condenser produces squealing sound?


If your AC compressor produces loud squealing noise (i.e.a long high-pitched sound) , either the fan motor or compressor motor is in trouble. This could be due to the air con being overused or the lifespan of the fan motor or compressor motor is nearing its end.

Solution:  Replacement of fan motor or compressor may be necessary.


Engaging a professional to help repair or replace your ac condenser


CitiCool offers free troubleshooting service to identify the problem existing in your defective ac condenser. However, we do charge a minimal transportation cost which can be used to offset against the repair cost. We also sell both used and new ac condenser component and parts that you may need to replace to fix your defective condenser. Customers who try to save cost normally choose to use used parts to replace the damage part of their condenser. If it is more cost effective to replace your ac condenser, we also have second hand ac condenser available for replacement. Normally, we would advise customer with an old aircon system to replace their condenser with a re-conditioned unit instead of a new unit. This is more cost effective because just in case the indoor unit also start to have problem later, the owner may consider changing the entire system. In this scenario, it may not be advisable to replace the current ac condenser with a new one.

Feel free to contact us if you require our service.

Other Related Educational Tips to read

Air Con System Components That Are Non Replaceable

Educational Content covering Causes, Tips and Solutions for Aircon Problems

Educational Content covering FAQ on Aircon Conditioner Problems 

Air Conditioning Service Office Contact


Tap the number below on your handphone to contact us.


Office Mainline No: . 6876 0581


Whatsapp No: 9272 6997


Check our office and aircon workshop location on our contact page.


Air Conditioning Service Booking





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Aircon Leaking Water FAQ

Aircon Leaking Water FAQ

Is aircon leaking water a serious aircon problem ? 

Aircon leaking water (Indoor Unit)

If you are having a concern over aircon leaking water in your indoor unit, actually, it may or may not be a problem of concern.  For example, you may spot some water around the evaporator coil of the air conditioner (“AC”) unit.  There is no need to panic as this is actually due to condensation of the evaporator coil and this is quite normal.  Sometimes, you may even spot a small pool of water.  Actually, there is no need to be too worried also.

However, you need to have some concern if you spotted an abnormally big amount of water leaking from the fan coil.  This is really an aircon leaking water problem.  However, this problem can be solved easily with the help of an aircon technician.  Normally, its quite easy to solve the problem.  Let’s explore on where the problem lies so that you can understand the extent and type of work required to solve the problem.

What causes aircon leaking water problem?

Possibilities for aircon leaking water include but are not limited to:

  • drainage pipe is dirty or blocked;
  • drainage pipe not properly installed ; or
  • refrigerant level is too low

I:  Drainage pipe is dirty or blocked

One very common reason resulting in the problem of aircon leaking water is due to blockage in the drainage pipe. Whether you use the air conditioner frequently or not, there will be dust, dirt or debris accumulated inside the drainage pipe over time.  In fact, the higher the usage of your air con, the faster dust, debris and even mould will accumulate in the drainage pipe.  In addition, over time, the pipe may become rusty and cracks may form also. This is especially so if your air con is a very old system. Therefore, if you did not service your air con regularly, the accumulation of all kinds of debris in the drainage pipe will start to cause blockage.  This blockage in your drainage pipe is definitely contributing to your aircon leaking water.

II: drainage pipe not properly installed

If your air conditioning system is very new yet it starts to have water leaking problem, one of the likely cause is due to improper installation of the drainage pipe.  Some possible installation problems include but are not limited to:

  • the drainage pipe was not installed with a correct gradient
  • the drainage pipe was not connected correctly
  • the drainage pan was not fitted in correctly

III: Refrigerant Level is low

When the refrigerant level in your air conditioning system is too low, it will result in pressure which can cause the evaporator coil to freeze over. When the ice starts to melt, water will flow into the drainage pan.  An excessive amount of water flowing into the drainage pan will cause an overflow.  This will result in your aircon leaking water.

What to do if you have aircon leaking water problem?

Once you identify your aircon leaking water, the best thing to do is to switch it off.  Whenever there is water around an electrical item, there is hazard.  It is also better to turn off the air conditioner.  Otherwise, the aircon leaking water problem can accelerate in more problems causing further damages to your air conditioning system.  Therefore, it is advisable to switch it off and stop using the air conditioner until the problem is resolved.

Engaging  professional help to solve your aircon leaking water problem

If your air conditioner (AC)  system is newly installed, then it is very likely that the AC leaking water is a result of poor AC installation.  You should contact your AC supplier to do the troubleshooting since your AC should be still under warranty.

If you have been using your aircon for some time and have not been servicing it.  It is likely that your AC leaks water due to drainage pipe blockage.  The solution is either to perform a general aircon servicing or a chemical wash (also known as chemical overhaul) to eradicate the problem.  Which service to perform really depends on the extent of the blockages.  If you are not sure which is a better solution, you should engage a professional opinion.

In fact, there are certain risks involved if you try to solve the aircon leaking water problem by yourself.  Dealing with water in an electrical appliances actually involve danger, especially for a layman.  Do contact CitiCool if you need help.  We are just one phone call away.  Sometimes we are able to assess the likely causes and extent of the problem if you are able to provide us the answer to a few relevant questions.  Sometime, we may need to go onsite to perform troubleshooting before giving you the right advise.  Just feel free to give us a call.

 How to prevent aircon leaking water problem?

Prevention is always better then cure.  The following are some useful tips on how to maintain your aircon to prevent it from leaking water:

  1. Clean or change the air filter regularly. This can help to remove the dirt that may be blown into your drainage pipe.
  2. Service and maintain the cleanliness of drainage pipe regularly to prevent blockage
  3. Check that the refrigerant level is appropriate and not too low.

Further prevention also include:

  • Having an additional drainage pan to stall excessive water flowing from the existing drainage pan.
  • Having an additional drainage pipe (secondary piping) installed for usage in the event the existing one becomes clogged.

Other Related Educational Tips to read

Educational Content covering Causes, Tips and Solutions for Aircon Problems

Educational Content covering FAQ on Aircon Conditioner Problems 



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What Are The Reliable Brands Of Aircon Compressor?

The aircon compressor is the most recognizable part of a split air conditioning unit. The brand of the compressor does not have to match the brand of your heating unit. The compressor is the part of the unit that sits outside of the house and creates the cool air that gets pushed into the house. There are several brands that make reliable compressor.

Samsung: Three Compressor Models
Samsung has been manufacturing aircon compressors for decades and they currently produce three of the best compressors in the industry. Their reciprocating compressor is an eco-friendly option that functions smoothly in all situations. A reciprocating compressor works by using pistons to compress air, like a combustion engine. It uses a crankshaft to get the pistons moving so gas can enter when the pistons are pulled back. The machine requires constant pressure to keep working.

Their rotary compressor is another favorite. This style works with two screws that spin simultaneously. They are rather quiet because there is little vibration when they spin. As the screws spin, the gas rises to the top where it is cooled and cools the air.

The third type is the scroll compressor, which has a smaller footprint than Samsung’s other two types of compressors. This type of compressor has been used for over 100 years and continues to be popular because it continues to efficiently cool air. It has two metal spirals inside that suck air in and spin it to the outer edges of the spirals. There, it is cooled and then released back into the environment.

Daikin Compressors: Creating a New Design
This is a popular brand that makes its own aircon compressors in its own factories. Daikin understands that without the compressor, the air conditioning system will not work. Their compressors actually increase pressure so the refrigerant gets even cooler and works more efficiently to cool your tropical home. They offer several styles of compressors, including a swing compressors as well as a scroll and single-screw model. The swing compressor is an incredibly efficient compressor for hot climates because it only has one moving part that is controlled by electro-magnets, so the single piston only moves a small amount. It requires little-to-no maintenance and has very little vibration and noise. It can even work when placed a a tilt up to 30 degrees.

Sabroe Compressors: High Quality Products
This brand of aircon compressors is designed to meet the needs of anyone who wants a cool spot in a tropical climate. They work with a variety of different refrigerants, like natural ammonia, as well as calcium chloride, ethylene glycol, propylene glycol, and water. The company makes the traditional screw compressors. They also make a reciprocating compressor. Sabroe tests every compressor in their factories before they put them out for sale to the public. This brand is part of the global group Johnson Controls, a highly respected manufacturer of industrial and residential products that make life more comfortable.