5 Common Sources of Water Leakage from Running Air Conditioners

Table of Contents

  1. Introduction
  2. Clogged Drain Line
  3. Improper Installation
  4. Frozen Evaporator Coil
  5. Damaged Condensate Pan
  6. Low Refrigerant Levels
  7. Conclusion


Is Your A/C Unit Leaking Water? What to Do
Air conditioners are vital in keeping our indoor spaces cool and comfortable during the hot summer months. However, if you notice water leakage from your running air conditioner, it could indicate an underlying issue that needs attention. In this article, we will explore the five common causes of water leakage from an air conditioner and provide insights into potential solutions. Whether you reside in Garden Grove, CA, or elsewhere, understanding these causes can help you identify and address the problem promptly.

Here Are The Common Sources of Water Leakage from Running Air Conditioners:

Clogged Drain Line

One of the primary reasons for water leakage from an air conditioner is a clogged drain line. Over time, dirt, dust, and debris can accumulate in the drain line, obstructing the flow of water. As a result, the condensate water backs up and starts leaking from the unit. Regular maintenance, such as cleaning or unclogging the drain line, can help prevent this issue.

Improper Installation

An improperly installed air conditioning system can also lead to water leakage. If the unit is not installed correctly, the condensate water may not flow appropriately toward the drain pan. Instead, it can accumulate in various parts of the system, causing leaks. To avoid this, it is crucial to hire a professional AC company in Garden Grove, CA, that specializes in installation and follows industry best practices.

Frozen Evaporator Coil

When the evaporator coil in your air conditioner freezes, it can result in water leakage. This occurs when there is restricted airflow or insufficient refrigerant levels. The frozen coil thaws, creating excess water that the drain pan may not be able to handle, leading to leakage. It is advisable to contact an air conditioning repair near you to diagnose and rectify the issue promptly.

Damaged Condensate Pan

A damaged or rusted condensate pan can also be a source of water leakage. Over time, the pan may develop cracks or holes, allowing water to escape. Regular inspections of the condensate pan can help identify any signs of damage and ensure timely repairs or replacements, if necessary.

Low Refrigerant Levels

Insufficient refrigerant levels in an air conditioning system can cause the evaporator coil to freeze. As mentioned earlier, this can result in water leakage. Low refrigerant levels can be caused by leaks in the system, which require immediate attention from a professional technician. They can identify and fix the leaks and recharge the system with the correct refrigerant levels.


Water leakage from a running air conditioner can be indicative of several underlying causes. By understanding the common culprits discussed in this article, you can take appropriate action to address the issue. Remember, regular maintenance, proper installation, and timely repairs are crucial for the efficient and reliable functioning of your air conditioning system.

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