Why does water leak from the indoor unit of an AC?

Water leakage from the indoor unit of an air conditioner is a common issue that can cause discomfort and even damage to your home if not addressed promptly. Understanding the underlying reasons for this problem is crucial for effective troubleshooting and prevention.Discover the causes of dripping and learn how to fix it.

Dirty air filters: Air filters tend to accumulate dirt easily. When they become clogged, they obstruct airflow, making it difficult for air to reach the evaporator coil. As a result, the coils become overly cold and eventually freeze. When they thaw, the excess water can overflow, leading to leaks from your AC. To address this issue, start by inspecting the filters. If they are dirty, replacing them is necessary.

Incorrect installation: If your new AC starts leaking on the first day, improper installation could be the culprit. Begin by checking if the unit is installed unevenly. If everything appears level, it’s best to consult a professional to diagnose and resolve the issue.

Leaking refrigerant: If the leaks are accompanied by the AC blowing warmer air than usual, the refrigerant might be the issue. Refrigerant is responsible for converting warm air into cool air. It's crucial to contact a technician right away, as leaking refrigerant can pose health risks. Prolonged exposure to refrigerant leaks can be toxic.

Piled up mold and fungus: A common cause of leakage is a clogged drainage system, often blocked by dirt, dust, and mold. This obstruction prevents water from flowing properly, leading to leaks as the water seeks alternative routes out. If left unaddressed, this issue could lead to respiratory problems. To resolve the leak, it's essential to contact a technician to clean the drainage system.

Old Pipes: Over time, the coating on your AC pipes can deteriorate, leading to leaks. To fix this, you can replace the pipe cover. If leaks continue even after replacing the cover, it's advisable to call a technician for a thorough inspection of your AC unit.

High Humidity Levels: high humidity areas, air conditioners must work harder to remove excess moisture, leading to increased condensation on the evaporator coils. If the drainage system can't handle the extra water, it may overflow and cause leaks. This issue is common in consistently humid environments or during rainy seasons.

Low Refrigerant Levels: Low refrigerant levels can cause the evaporator coils to freeze. When the ice melts, it produces excess water that can overwhelm the drain system, leading to leaks, especially in high-humidity conditions.

A professional technician should inspect the system for refrigerant leaks and repair any issues found. After addressing the leak, the refrigerant needs to be recharged to the correct level. It's important to handle refrigerant leaks promptly, as they can also damage the compressor, leading to expensive repairs.

Ensure that your air conditioner is appropriately sized for your home and that the drainage system can handle high moisture levels. In extremely humid conditions, using a dehumidifier alongside your air conditioner can help reduce the load on the AC unit and prevent leaks.

Water leakage from an air conditioner's indoor unit can stem from various issues, including clogged drain lines and improper installation. Regular maintenance and timely attention to potential problems can help prevent leaks and ensure your air conditioning system operates efficiently. If you encounter persistent issues, consulting a professional for accurate diagnosis and repair is always recommended.