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Why Your AC Leaks Water and Its Solution

Why is my Aircon Leaking Water and Should I Stop Using It Immediately?

Introduction

 

My aircon is leaking water, what now?? It is a common situation among aircon owners on leakage from Air-conditioners. That is why your aircon contractors usually advise not to put electronics item under the Air-conditioner. To know how to solve this issue, you have to first identify why is you aircon leaking. Following which, you can come out with a solution on how to solve this problem. In this article, we are going to talk about why your Aircon is leaking and what are some of the ways to solve them. Do note that we are only covering normal residential wall mount units in this Article. For commercial units, you might not be able to solve them using the methods outlined below.

 

Why is your Aircon Leaking? 

 

Generally, it can be attributed to these few reasons:

  • Drainage Pipe Choke
  • Choke Back Tray
  • Condensation of your Copper Pipes
  • Loose Connection of Water Hose

 

Drainage Pipe Choke

 

The aircon drain pipe is integral to the aircon’s functionality. Over time, debris and mold can accumulate, leading to blockages. Regular maintenance is crucial to prevent aircon pipe leaking, ensuring that the water produced by aircon condensation is adequately drained away.

 

aircon drainage pipe choke

 

Congested Back Tray

 

The back tray plays a vital role in collecting condensation from the aircon coil. Congestion in this area can cause overflow and result in aircon leaking water. Keeping the tray clean from debris and checking it regularly for blockages can significantly reduce the risk of leakage.

 

aircon congested backtray

 

Condensation of your Copper Pipes

 

This is a serious issue that will require major work to rectify. There’s a few immediate solution to solve this problem temporarily.

 

First, identify the fan speed of your Aircon. Do not turn it on Auto mode. A general rule for Aircon maintenance is, always turn it to maximum fan speed. This will result in lower pressure in the copper pipes, hence less condensation. Therefore, check your remote control and turn it to maximum, monitor the situation from there.

Note : you might have to wait for a while for the insulation inside the casing to dry up first before you turn on the Aircon again.

Condensation of your Copper Pipes

copper pipe condensation

 

Second, check your Aircon filter. A dirty Aircon filter or dirty coil will result in Aircon condensation as well. As the air will be prevented from coming out from the coil, resulting in pressure build up in the copper pipes. So if your Aircon filter is dirty, you can try washing the filter and see if there’s any changes to the condition. If your Aircon is dirty, it might be time for you to call us up for an Aircon Servicing Appointment.

 

congested aircon backtray

 

If aircon dripping water is caused by a clogged back tray or loose water hose, you will likely have water dripping onto the back of your wall. You would not water this flow of water to slowly drip from your water to your floor. Over time this could cause damage to both your wall and your flood board. What you can do is tape a few pieces of cloth onto your wall. This will absorb the flow of water that is dripping water down from your wall. As listed above are only temporary solutions.

For a congested back tray, you might require a full chemical overhaul to prevent it from choking again. Because you will need to dismantle the entire fan coil to access the back tray section. However, if the leaking issue is due to loose water hose, you will have to call the Aircon technician down to reattach the hose.

 

Loose Water Hose

 

Another reason that might leak to water leakage will be loose connection of water hose. If you just had your Aircon serviced recently, you will likely encounter this problem within 24 hours of it. That is because the technician has likely been careless in tightening the Aircon hose and drainage pipe. We would advise you to call up the Air-conditioning technician to rectify this issue. (P.S. we are guilty of this from time to time as well)

However, there are cases of the hose clip being broken due to wear and tear as well. In these instance, you might not be able to easily identify this issue. Hence, your bet is to prepare those pails to contain the dripping water,  and call us up for an Aircon servicing appointment to rectify your issue.

 

The solutions suggested are temporary. You will likely still need to book a schedule with an Aircon company to solve the water leaking problems. Here at Silverback Aircon, we have a team of experienced Air-conditioning technicians to get it rectified. Call us at 91775500 if you have any enquiries!

 

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When can it be dangerous to use your Aircon if it’s Leaking Water?

 

If your Aircon is leaking water because your compressor is running but fan coil is not.

 

In this situation, usually your magnetic contactor is faulty. Hence the evaporator is cold but the fan coil is not turned on. Hence there will be ice build up on the evaporator coil. This situation can be dangerous because your compressor is running 24/7. It may result in the compressor overheating and malfunctioning. However, you can turn off the unit by turning off the isolator that controls the condenser. In this situation you should repair your Aircon unit as soon as possible.

 

If you have electronics or vinyl flooring located below the fan coil unit.

 

If you have vinyl or wooden flooring. Aircon leaking water may damage part of the flooring. In addition, if you place electronics item such as television below the leaking fancoil unit. It may cause a power trip. Any broken or exposed wires may also cause fire. Hence in this situation it can be dangerous as well.

Free solution to solve Aircon Leaking Water immediately

While some issues require professional intervention, there are immediate steps you can take to address aircon leaking.

Place a pail under the dripping water

If your Aircon leaking water is caused by choke in drainage pan. The only way to solve it by yourself is to get the largest pail possible. Put dry unwanted cloth in it, and place it under the area, which is leaking. The dry cloth should absorb the water and prevent unnecessary noise. This will likely buy you some time to call up an Air-conditioning contractor to rectify this issue. For drainage pipe choke, normal servicing of your Aircon would suffice.

Tape a few pieces of cloth onto your wall

If aircon dripping water is caused by clogged back tray or loose water hose. You will likely have water dripping onto the back of your wall. You would not water this flow of water to slowly drip from your water to your floor. Overtime this could cause damage to both your wall and your flood board. What you can do is tape a few pieces of cloth onto your wall. This will absorb the flow of water that is dripping water down from your wall. As listed above are only temporary solutions.

For congested back tray, you might require to do a full chemical overhaul to prevent it from choking again. Because you will need to dismantle the entire fancoil to access the back tray section. However, if the leaking issue is due to loose water hose, you will have to call the Aircon technician down to reattach back the hose.

Identify the fan speed and wash your aircon filter.

This solution is only applicable for aircon leaking water due to condensation issue.

First, identify the fan speed of your Aircon. Do not turn it on Auto mode. A general rule for Aircon maintenance is, always turn it to maximum fan speed. This will result in lower pressue in the copper pipes, hence less condensation. Therefore, check your remote control and turn it to maximum, monitor the situation from there. Note : you might have to wait for a while for the insulation inside the casing to dry up first before you turn on the Aircon again.

Second, check your Aircon filter. A dirty Aircon filter or dirty coil will result in Aircon condensation as well. As the air will be prevented from coming out from the coil, resulting in pressure build up in the copper pipes. So if your Aircon filter is dirty, you can try washing the filter and see if there’s any changes to the condition. If your Aircon is dirty, it might be time for you to call us up for an Aircon Servicing appointment.

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How much does it cost to solve Aircon dripping water?

Aircon leaking water due to drainage of pipe choke

 

The number one reason why you Aircon is leaking water is due to drainage pipe choke. As listed below are several ways to clear the choke in your AC water drainage pipe.

1. Servicing of Aircon units

 

Normal servicing of Aircon units involves clearing of your Aircon water drainage pipe. The usual method of clearing the drainage pipe involves vacuuming of the Aircon unit from the Aircon itself. Or from the tail end of the water drainage pipe.

Number of units Normal Aircon Servicing Units 
1 unit $50
2 unit $60
3 unit $75
4 unit $90

 

Contract servicing of Aircon units

 

Most of the time you do not require Aircon servicing contract. Sure, drainage pipe choke is an issue that will definitely occur some day. However, most of the time, it does not come every 2 months. However, if Aircon is located above the bed or other expensive electronics item. Then you may consider doing Aircon contract servicing instead. As you clear the drainage pipe of any possible blocking every 3 months. Sometimes, due to the structure of the house, the gradient for Aircon water pipe is not too steep. Hence the Aircon may leak more often than usual.

2. Chemical flushing of aircon pipe

 

There is no scientific proof or clinical trial done to prove that this can help to clear your drainage pipe. However, the dirt that is causing your drainage pipe to choke is collected from the dust on your Aircon unit when mix with water. And this chemical solution that we are pouring to your drainage pipe is exactly the same solution that we use to do chemical overhaul with your Aircon unit. And it does the job of clearing your Aircon unit of all these dirt. Hence, we have reasons to believe that by lacing your Aircon water pipe with chemical solution. It may prevent your Aircon from leaking water more often. The cost of this is around $80.

3. Purging of Aircon water pipe using gas

 

For more severe case of Aircon water pipe choke. Even using vacuum may not work. Hence to solve this issue, we may have to use high pressure gas to purge the Aircon water pipe of blockage. To do so, we’d usually block out the water hose from other fancoil unit. Because the water may purge out from the water hose near the fancoil instead. This may cause damage to the mother board of the fancoil unit. Once the water hose of all fancoil units are blocked. We will purge it. The cost of this ranges from $80 – $120.

Aircon dripping water due to back tray congested

Aircon Chemical Overhaul

 

The default way is to do Aircon chemical overhaul on the unit. The whole unit will be dismantled and we will wash the coil with chemical solutions. Refer to the table below: 

Aircon types Aircon Chemical Overhaul Price
Normal wall mounted unit $130
Ceiling Cassette $260

Aircon dripping water due to condensation issue

 

If the water is dripping from your Aircon trunking or false ceiling (for condo or landed properties). It could be an indication of condensation. This is the most serious problem by far. As there is no surefire way to solving this issue. And the easiest way to solve the root of this problem is to re-run the entire set of copper pipe. This is very costly. When you purchase an Aircon from major appliance store, there may be workmanship warranty. However the workmanship warranty will not guarantee condensation issue! Hence, as listed below are some solutions to Aircon leaking water.

1. Turn on higher fan speed

 

This may come as a surprise to most people. But do you know, many times, if you’d just turn on the fan speed to maximum. You will be able to stop condensation from happening. This is because the pressure on the Aircon copper pipe till be less intense when the Airflow is stronger. Hence most of the time most condensation case we encountered stems from people that does not turn on high fan speed.

2. Install additional layer of insulation – For condominium or landed properties

 

If you are staying in a condominium or landed property. And you notice moisture marks on your false ceiling. It could be an indication of condensation issue in your Aircon copper pipe. However, there is a way to solve this without re-running the entire set of piping. You may choose to cut open that area that has moisture mark. Attach another layer of insulation on top of the current one. There is a high chance (not 100%) that can solve this condensation issue. However. if there are many parts of the ceiling that have this issue, you may consider re-running your entire set of copper pipes.

3. Add in newspaper or foam

 

For customers that stay in HDB. Another way to solve this is to insert newspaper or foam in areas that are affected. However, this only applies to houses that have condensation issue in only a few areas. If the entire trunking has condensation issue, you may consider re-running the copper pipe instead.

4. Open up trunking and inspect for torn Aircon insulation

 

If condensation occurs due to torn Aircon insulation. Then the immediate step is to re-tape the insulation. This may prevent condensation immediately. However the Aircon technician will have to open up the trunking and inspect first.

5. Inspect for loose water hose connection

 

This is not due to condensation. However, sometimes it is very hard to see carefully. As to whether the water marks inside the trunking is due to condensation or it could be due to a different cause. Hence, the technician will have to be very careful with it’s diagnosis. As we have encountered a case when the water inside the trunking is caused by loose water hose connection instead. Hence, the number one step is to open up the Aircon trunking and inspect carefully first.

Summary Price List

 

To conclude, the table consolidates how much it costs for each services required to solve the problem of aircon leaking water as mentioned above :

 

Types of Services Price of Services
Normal Aircon Chemical Wash $80 / unit
Aircon Chemical Overhaul $130 / unit (Cheaper per unit price for 2 or more)
Ceiling Cassette Chemical Overhaul $260 / unit (depending on difficulty of job)
Chemical Flush pipe $80
Purge Aircon Pipe $80 – $120

Conclusion

 

Regular maintenance and understanding the common causes of why is my aircon leaking are key to a well-functioning air conditioning system. Whether it’s a minor issue like air conditioner leaking water or more complex problems, being proactive can save time and money. For those who are not comfortable handling these issues themselves, it’s always advisable to seek professional help. For reliable and expert aircon servicing in Singapore, don’t hesitate to visit Silverback Aircon and for repair you can check out our Aircon Repair Singapore, your go-to solution for all aircon servicing Singapore needs.

FAQ on Aircon Water Leaking

I just did Aircon chemical wash 1 month ago, and my aircon is leaking again. Is that normal?

Well it depends on which part of your Aircon is leaking and where is it leaking from? If it’s leaking from the back of your unit, that means your back tray is choke. Only Aircon overhaul with dismantling of the entire fan coil unit will solve the problem.

 

Will my Aircon consume more electricity if my Aircon is leaking water?

Aircon leaking water is usually caused by clogged drain line. It does not make your compressor work harder. Which means it should not affect your electricity consumption.

 

Can I prevent my Aircon from leaking water?

Regular servicing will usually reduce dust build up in the coil area. Furthermore it will also reduce the rate in which the drain line gets clogged up. In a way this will prevent it from leaking water. However, there is no foolproof way to guarantee that your Aircon will not leak water. As there are a lot of reasons why it can leak water. Even the humidity level in the room affects the rate of condensation for your Aircon pipe.

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