If you go outside to check your air conditioner and are met with a puddle of water beneath the system, what happened and how can you fix it? A leaking AC often signals the need for AC repair services, but the root of the issue can sometimes be difficult to diagnose.
Read more below to discover the common root cause of a leaking AC and the most common solutions.
Clogged Condensate Drain Line
One of the most common causes of an air conditioner leaking water is a clogged condensate drain line. This line is responsible for carrying excess moisture away from the system, and when it becomes blocked by dirt, algae, or debris, the water has nowhere to go and begins to pool around your unit. Fixing this issue typically involves clearing the blockage using a wet/dry vacuum or a specialized tool to restore proper drainage.
Frozen Evaporator Coil
A frozen evaporator coil can also lead to water leakage. When the coil freezes, it prevents the AC from properly cooling your home, and as the ice melts, it can result in excess water that the system isn’t equipped to handle. This could be due to restricted airflow, a dirty air filter, or low refrigerant levels. Addressing the issue often requires replacing the filter, ensuring proper airflow, and potentially scheduling a professional to check refrigerant levels and system components.
Damaged or Disconnected Drain Pan
The drain pan collects moisture that drips off the evaporator coil, guiding it toward the drain line. Over time, the drain pan can crack, rust, or become misaligned, causing water to leak from the unit. If you suspect a damaged or disconnected drain pan, it may need to be replaced or properly reinstalled by a professional to prevent further leakage.
Low Refrigerant Levels
Low refrigerant levels can cause the evaporator coil to freeze and eventually lead to water leaks when the ice melts. This situation not only causes leaks but also indicates a more serious issue within your AC system. A licensed technician will need to identify the cause of the refrigerant loss, repair any leaks, and recharge the system to ensure it functions properly.
Dirty Air Filter
A dirty air filter restricts airflow over the evaporator coil, which can cause the coil to freeze. As the ice melts, the excess water may overwhelm the drainage system, leading to leaks. Regularly replacing your air filter is an easy way to prevent this issue and ensure your AC system operates efficiently. If you notice water leakage, check the air filter first and replace it if necessary to see if that resolves the problem.
