My Air Conditioner Is Leaking Water: Causes and Solutions

My Air Conditioner Is Leaking Water: Causes and Solutions

In the hot summer months in Singapore, your air conditioner works hard to beat the heat. But if you notice water leakage from the aircon, you might wonder what’s causing it and how to fix it. In the upcoming paragraphs, we’ll discuss various reasons that could lead to an AC leak and offer practical steps to address the problem. If you’re looking for an aircon installation company in Singapore, we can help you too!

How and Why Water Forms in Your Air Conditioner

An interior and outdoor unit are typical components in current air conditioning systems. The indoor unit’s evaporator coil cools the heated air as it passes over it, preserving a comfortable inside temperature.

Condensation starts to build as soon as the heated air touches the coil. This process resembles the formation of water droplets on a cold glass of water. The moisture this condensation creates drips into a condensate drain line-connected drain pan. This connection should ideally go outside your house so that you won’t have any leakage problems inside.

But sometimes your air conditioner might start dripping water into your home. There is no need to fear, though, as we will now look at a few potential causes and solutions.

Clogged Drain Line: The Main Culprit

If your air conditioner leaks water into your home, the most likely cause is a clogged condensate drain line. This drain line may eventually become blocked by debris like dust, dirt, or mold. A clogged drain line prevents water from draining outdoors and creates a blockage that allows moisture to leak back into your home.

Simple methods to clear the clog:

  • Remove the obstruction by using a wet/dry vacuum.
  • Enter the drain line with the vacuum hose.
  • To clear debris, turn on the vacuum and produce suction.
  • Keep sucking up until the line is free
  • Verify that the water is freely flowing.
  • If the clog persists, consider seeking professional assistance
  • Professionals have specialized and powerful vacuums for effective clog removal
  • They can restore appropriate drainage and stop further problems.

Dirty Air Filter: A Potential Culprit

Changing the air filter in your air conditioner frequently, at least once every 30 days, is crucial. Your system will have to work harder if you don’t change a dirty air filter, which could result in worn-out or damaged components.

A dirty filter can also obstruct the airflow over the evaporator coil, causing it to become excessively cold and eventually freeze. When the frozen coil thaws, the excess water can overwhelm the drain pan, resulting in leakage. Replace your air filter every one to two months to avoid this. The filter may cause your air conditioner’s water to leak if it appears overly dusty or blocked.

Low Refrigerant Levels: Another Possible Cause

In Singapore, monitoring the refrigerant level of any air conditioners installed in buildings like homes and workplaces is crucial. The pressure inside the AC system reduces as the refrigerant level drops. The evaporator coil could freeze due to this pressure drop, creating a mess. Check the levels if your air conditioner needs more refrigerant to cool your room adequately.

Keep an ear out for any unusual hissing or bubbling sounds, which might indicate a refrigerant leak. Detecting a leak early on gives you a chance to get it repaired, saving you from more significant problems later. However, ignoring the leak could lead to a complete unit replacement, which can be costly.

To avoid such issues, regularly inspecting your HVAC system is highly recommended. Ideally, you should have a thorough inspection at the beginning of every summer. By doing this, you may spot possible leaks and other issues early on and fix them before they become serious issues. Hiring a reliable aircon installation company in Singapore to perform these regular inspections can keep your air conditioner operating effectively and smoothly.

Additional Causes of AC Leaks

Apart from the causes above, there are a few other reasons your air conditioner may leak water inside your home.

  • Older AC systems may have a rusted or damaged drain pan, which can cause water leaks inside the home.
  • AC units between 12 and 15 years old may require a new drain pan to resolve the issue.
  • Malfunctioning condensate pumps can also cause AC leaks. The pump should move water outdoors if the appliance is set up in a basement. A broken pump can hinder water discharge and potentially cause damage.
  • Promptly repairing or replacing a malfunctioning condensate pump is crucial to prevent water damage.
  • Seeking professional assistance is recommended when in doubt about the source of the AC leak.
  • Ignoring leaking air conditioners can lead to minor inconveniences escalating into major flooding problems within days or weeks.
  • If unable to identify the problem’s source, it’s essential to have the AC inspected by professionals.

Say Goodbye to a Leaking AC

Knowing why air conditioner leaks arise can help you handle the problem on your own. However, it is advised to contact the professionals at Service Masters for reliable AC repair services if you are unsure of the causes of the leaks.

Most air conditioner leaks can be resolved with their expertise and an accurate diagnosis before they increase. Most of the time, you can fix the problem and keep living in a fantastic, leak-free house all summer.


It’s crucial to take immediate action if your air conditioner is dripping water to limit future harm. A clogged drain line, a polluted air filter, or low refrigerant levels frequently cause AC leaks. You might be able to fix the issue yourself by employing straightforward techniques like replacing a clogged air filter or clearing the drain line with a wet/dry vacuum. However, Nature Cool is here to help if you’re unsure or require expert advice. They can effectively assess the problem and offer trustworthy fixes thanks to their skills in AC repair services, ensuring a relaxed, leak-free home all summer. Trust Nature Cool to keep your home cool and pleasant all summer, and don’t let a leaking AC affect your comfort.