May 21, 2024
Why is My AC Leaking?

A leaking air conditioner is a common but concerning issue for many homeowners. At Real Time Bros Heating & Air Conditioning, we frequently address this problem and help our customers understand the causes and solutions. If you notice water pooling around your AC unit, it’s important to identify the cause and address it promptly. Here are some common reasons why your AC might be leaking.

1. Clogged Condensate Drain Line

The most common cause of AC leaks is a clogged condensate drain line. This line is responsible for removing the condensation that your AC produces as it cools your home. Over time, dirt, dust, and mold can accumulate in the drain line, causing a blockage. When the line is clogged, water backs up and can overflow, leading to leaks. Regular maintenance, including cleaning the drain line, can prevent this issue.

2. Dirty or Damaged Air Filter

An air filter that is dirty or damaged can restrict airflow, causing the evaporator coil to freeze. When the coil eventually melts, the excess water may overwhelm the drain pan and lead to leaks. Changing your air filter regularly is a simple yet effective way to prevent this problem.

3. Low Refrigerant Levels

Low refrigerant levels can cause the evaporator coil to freeze. Similar to the issue with dirty air filters, once the ice melts, it can cause an overflow in the drain pan, leading to leaks. If you suspect low refrigerant levels, it’s important to have a professional check and recharge your system. Leaks in the refrigerant lines can also cause this issue and should be addressed immediately.

4. Damaged or Rusty Drain Pan

Older AC units may have drain pans that are damaged or rusted. A damaged drain pan can’t hold water properly, leading to leaks. Inspecting and replacing the drain pan, if necessary, is a straightforward fix for this problem.

5. Improper Installation

If your AC unit was not installed correctly, it might not be level. An unlevel AC unit can cause the drain pan to overflow, resulting in leaks. Ensuring your unit is properly installed by a professional can prevent this issue.

6. High Humidity Levels

In regions with high humidity, your AC unit has to work harder to remove moisture from the air. This can lead to excessive condensation and potential leaks. Using a dehumidifier in conjunction with your AC can help manage indoor humidity levels and reduce the risk of leaks.


Understanding the causes of AC leaks can help you address the problem quickly and effectively. Contact us for AC repair! Regular maintenance, such as cleaning the condensate drain line and changing air filters, can prevent many common issues. If you notice a leak, it’s important to contact a professional to diagnose and fix the problem. At Real Time Bros Heating & Air Conditioning, our experienced technicians are here to help with all your HVAC needs, ensuring your system runs smoothly and efficiently. Contact us today to schedule a service and keep your home comfortable and leak-free.

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