Daikin Aircon leaking water? Reasons & Solutions

Introduction to Daikin Aircon leaking water

Spent a ton on a Daikin aircon unit but experiencing a frustrating water leakage problem? You are not alone. (Almost 90% of people have reported aircon water leaks.) The pains of a leaking aircon unit is felt by many other Singaporeans with the widespread usage of air conditioners in the excruciating heat we experience daily. A leaking aircon unit can lead to an unconducive workplace and messy floors in retail stores. In worse cases, an unsafe place at home for the frail elderly if they slip and fall. Fortunately, you will be relieved to know that this issue is extremely common and easy to fix. The article helps you to firstly identify the problem and then understand its causes. Subsequently, you will learn measures to take for temporary damage control and even permanent solutions as well.

daikin aircon leaking water

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Reasons for Daikin Aircon leaking water

Condensation on Flaps of Daikin Aircon Unit


So the problem is that your DAIKIN aircon leaks water. You notice that water droplets are forming on the aircon flaps and rolling off onto the floor. This is mainly due to mild condensation of air from the air conditioner onto its flaps. Quiet mode worsens the problem. This mode enables weak airflow, which facilitates the process of condensation of water vapour into water droplets. Dirty evaporator coils is another reason for weak airflow as they often get choked.

dirty evaporator coil

Furthermore, if the aircon flap is facing an upwards angle, cold air will be blown directly onto it. Thus temperature on the surface of the flaps is lowered causing rate of condensation to increase.

You may have heard from aircon technicians to reduce the number of electronic products under your aircon. The reason for this is because electronic products generate heat energy. They warm the air around the air conditioner unit especially if they have been turned on for prolonged periods. Therefore, the rate of condensation of warm water vapour in the air into water droplets is increased.

Condensation on Cold Copper Pipes


To identify this issue, notice the black patches forming on the outside of the white trunking of your aircon. This happens when excessive amounts of water forms onto the copper pipes in your DAIKIN aircon due to Aircon condensation. Are you using worn-out Armaflex insulation? The older models of Armaflex insulation are only 3/8 inches thick. Compare this to the upgraded model of today that is 1/2 inch thick and thus longer-lasting. The thicker the insulation layer, the better it is in protection against water that is formed during condensation. If you are using an inverter aircon from DAIKIN, such an upgrade is necessary. This is because of the increased gas pressure as compared to a non-inverter aircon unit. Unfortunately, water leakage from copper pipes is a major problem that requires professional assistance.

Congested Back Tray


This problem is a lot more difficult to identify since it results in water droplets dripping behind your aircon. This problem was less common in the past when the design of aircon units allowed for water on the evaporator coil (from condensation) to fall into a drainage pan. Currently, because the exterior look of a unit is valued more, a less functionable interior design is favoured in units. This leads to water droplets flowing towards the back of the aircon, the backtray. As time goes on, water accumulated onto the evaporator will clog up the backtray. Therefore, water droplets will start rolling down from the back of the aircon unit.

congestion of backtray

Daikin Aircon leaking water due to Loose water hose


One more reason for water leaking from your DAIKIN air conditioner unit is the loose connection of water hose. This problem may occur within 1-2 days of bad aircon servicing. The technician did an unprofessional job and was careless in tightening the hose to the drainage pipe. You are advised to give a call to the air-conditioning technician for clarification so he can rectify the issue immediately. For more trustworthy services, do contact us for future aircon services.

That being said, this may be a result of gradual wear and tear as well. In that case, simply leave it to the experts to solve it for you. In the mean time , there are solutions that can act as damage control while waiting for aircon technicians to help you.

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Solutions to Aircon Water Leakage

Place a pail underneath your DAIKIN aircon unit


If water is continuously dripping down non-stop, it should be the case of a choke in drainage pan and this requires professional assistance. Whilst waiting for the arrival of aircon technicians, place a pail directly below the aircon unit to catch water dripping down as a temporary measure for preventing  wet floors. As an added tip, place dry cloth in the pail. This is to prevent the incessant sound of water falling onto the surface of the pail, which may be distracting to you.

aircon water leaking

Tape pieces of cloth onto the wall to mitigate Daikin Aircon leaking water


If water leakage happens on the back of the DAIKIN aircon unit instead, there will be water dripping down on your walls. This can be caused by either a clogged backtray or loose water hose. You should not let this go on for too long as there may be damages to the floorboard or the surface of your wall. To solve this temporarily, simply tape pieces of cloth onto the wall. These pieces of cloth will absorb the water rolling down on the wall. As for permanent solutions, you may need a chemical overhaul to prevent your backtray from choking again. If the water hose is loose, just notify the aircon technician to fix it for you.

Changing Settings of your DAIKIN aircon unit


Condensation is a big part of water leaking from your aircon unit. One solution for this is to alter the fan speed of your aircon. A general rule of thumb is to maintain maximum fan speed. This lowers the pressure in the copper pipes and thus reduces the rate of condensation, leading to less excess water droplets formed. So, remember to check your aircon remote control regularly and take note of this setting. Do note that it may take a while for this method to take effect as it takes time for the insulation in the casing to dry up first before you turn the aircon on again.


Check the aircon filter of your DAIKIN aircon unit


A dirty aircon filter or dirty coil increases the rate of condensation in aircon units as well. As the air is prevented from escaping the coil, there will be a build up in pressure in the copper pipes (are pressure tests necessary?). Therefore, if the aircon filter is dirty, you can try washing it and see if there is a decrease in water leakage. If there are many other parts in your aircon that are dirty as well, it will be a good idea to contact Silverback Aircon directly for professional aircon services.


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Consequences of water leakage in air conditioner units


Although the problem of your DAIKIN aircon leaking water is not the most urgent as compared to other issues such as a faulty AC condenser, there may be consequences if you procrastinate solving this issue. The biggest one would be the unfortunate damage of vinyl flooring, which can be costly to fix. To be frank, it is possible to leave a pail to collect falling water droplets and protect your flooring but it can be rather distasteful to have a pail that is out of place in an area. Furthermore, the incessant dripping sound of water into the bucket can be painfully annoying to some.

It is true that the air conditioner unit can function properly even with mild leaking. However, it takes up way more energy (causing higher electricity bills) and puts a heavy burden/strain on the unit. It may incur a higher cost if other parts of the unit are spoilt.

An important thing to note is that the liquid that is leaking from the aircon unit may not be water but refrigerant. This causes an increase in electricity bills and longer time for your house to cool down. Furthermore, it may be dangerous if the refrigerant evaporates and becomes toxic gas. Therefore, it would be best to seek our technicians and tackle the problem as soon as possible. This reduces the risk of wrongly identifying the leakage.


At Silverback Aircon, our friendly staff and technicians will provide you with the most efficient service for the best and affordable price. Furthermore, all of our spare parts are tested, refurbished and commissioned before selling it to you.  Therefore, you can trust us with all your aircon servicing needs. For any enquiries with regards to Mitsubishi Heavy Industries Aircon Error Codes, or other brands, don’t be hesitant to contact us. Our friendly staff will be able to provide you with all the necessary information. Meanwhile, you can book an appointment with us for a site visit so that we will be able to give our professional advice to you. We also provide other aircon services as well.

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Daikin aircon leaking water can be a result of various issues, such as clogged condensate drains, a malfunctioning indoor unit, or an issue with the outdoor unit. If water is leaking from the indoor unit, it can cause damage to the surrounding area and may also indicate a refrigerant leak, which can be harmful. If water is leaking from the outdoor unit, it may indicate a problem with the condenser or the refrigerant piping. To resolve the issue, contact Silverback Aircon for professional assistance for diagnosis and repair. Regular maintenance, including cleaning the condensate drains, can help prevent leaks from occurring.

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