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Why is my Air Conditioner Leaking Water and How do I Fix it?

Why is my Air Conditioner Leaking Water and How do I Fix it?

Finding mysterious water puddles in your home that don’t belong is definitely concerning. Not only do you have to locate the cause of the leaking water, but you also have to make sure there hasn’t been any expensive damage done.

Air conditioners do collect small moisture amounts as a part of their regular operation. However, if you’re noticing frequent dripping or pooling water around your unit, there’s likely a problem that’s developed.

Causes of an Air Conditioner Leaking Water Inside

If your air conditioning unit is leaking, it’s a sign that something is wrong. There are several common reasons that could explain the problem. These include:

Clogged Drain Line

A clogged drain line is one of the most common leaking air conditioner causes. Over time dust, debris and mould can collect in your drain line, resulting in a blockage. This means that the drain pan cannot get rid of excess water. The drain pan will eventually fill up and overflow, causing leaking water inside.

Unit is Installed Improperly

An AC leaking water could be the result of a poorly installed unit. When installed, your air conditioner should be positioned with the correct inclination to prevent water leaking. If your air conditioner is not properly inclined, it may not be able to drain water as it needs to.

Air Leaks

An air leak is another common cause of an air conditioner leaking water inside. If the ductwork in your home isn’t sealed or insulated correctly, moisture from the surrounding air can be drawn into your AC system. Once this has mixed with the cooler conditioned air inside the ducts, condensation can form. This will eventually lead to dripping water coming from your air conditioning system.

Leaking Air Conditioner has a Dirty Filter

If you find your AC unit leaking water inside, it could also be the result of a dirty air filter. It’s normal for air filters to collect dirt and debris over time. However, neglecting regular professional air filter cleaning service can mean that your filter gets clogged.

A clogged air filter can cause the airflow to the evaporator coils to be either restricted or completely blocked. This will cause a significant drop in temperature. If the temperature gets too cold, the evaporator coils will start to become frozen. Once your AC unit is switched off, warm air will enter the unit and cause the frozen water to melt. The melted ice will then cause excess water to drip into the drip tray, resulting in leaks.

To avoid this, it’s important to book in a professional duct cleaning service every year. This will not only keep your home’s airflow clean and healthy, but it will also prevent your ac drain pan leaking.

Refrigerant Levels are Low

Low refrigerant levels in your indoor unit will act similarly to a dirty air filter. A low refrigerant level will cause the pressure in your air conditioner to lower, freezing the evaporator coils in the process. When the coils melt, the water drains into the drain pan which will eventually overflow.

There are a few notable signs that your refrigerant levels are low, including:

  • Your air conditioner is struggling to produce cool air
  • A bubbling or hissing sound is coming from the unit

If a refrigerant leak is responsible for your air conditioner leaking water, you’ll need to contact a professional technician straight away. Depending on the leak severity, you may need an air conditioner replacement.


Problems Caused by Water Leaking from Air Conditioner Units

If you are regularly finding a large amount of water dripping in your home, you could be facing some severe issues down the track. Air conditioning leaks can cause serious damage to your home over time. This damage could include:

  • Pools of water around your air conditioner unit
  • Water stains on your ceiling
  • Bubbling paint on your walls or ceiling
  • Damaged or broken plaster around your house


How to Fix Air Conditioner Water Leaks

When you notice that your air conditioner is leaking, it’s important to act straight away. This way you will be able to minimise the damage done and avoid costly repair bills. Before you start looking for the cause of the leak, you should:

  • Turn off your air conditioning unit
  • Clean up the leak to prevent water damage to your home

Next, it’s important to make sure your air con unit is in the best hands possible to prevent further leaks. You should contact a professional HVAC technician to inspect any issues and recommend the best course of action. They will be able to service and repair your unit, or install a brand new system if needed.


Prevent Your AC from Dripping Water

Tired of typing “why my air conditioner is leaking” into Google to find answers? Don’t wait until your unit is facing a dripping problem to take action. Instead, be sure to book in an annual maintenance service with a qualified technician.

Your HVAC expert will be able to locate any potential problems with your AC and fix them before disaster strikes. They will check and service your drain line to ensure it isn’t blocked, as well as check your unit’s air filter and refrigerant levels. With regular maintenance service, your air con should live a long, leak-free life.