If your air conditioning unit is leaking water, it can be frustrating and worrying. But don’t panic—there are several common reasons why this happens, and most of them are fixable. Let’s dive into what might be causing the issue and how you can resolve it.

Common Causes of Water Leaks in AC Units
1. Blocked Drain Line
The drain line removes condensation from your air conditioning system. If it’s clogged with dirt or debris, water can back up and leak from your unit.
2. Dirty Air Filters
A dirty air filter restricts airflow, causing the evaporator coil to freeze. When it melts, excess water can overflow from the drip pan.
3. Low Refrigerant Levels
Low refrigerant can cause the coil to freeze. As it defrosts, the melting ice can result in a water leak.
4. Damaged or Cracked Drain Pan
Over time, the drain pan can crack or corrode, leading to leaks as water escapes instead of draining properly.
How To Fix a Leaking Air Conditioning Unit
Clean the Drain Line
You can use a vacuum or pipe cleaner to remove any blockages from the drain line. Regular cleaning prevents future clogs.
Replace the Air Filter
Change your air filter every 1–3 months to ensure smooth airflow and prevent coil freezing.
Check Refrigerant Levels
If refrigerant is low, contact a professional to safely refill and inspect your system.
Inspect and Replace the Drain Pan
If your drain pan is damaged, replacing it will solve the issue.
When To Call a Professional
While some fixes are DIY-friendly, recurring leaks or issues with refrigerant require professional help. TRS Cooling offers comprehensive repair services to get your air conditioning unit running smoothly again.

Water leaking from your air conditioning unit is often due to simple issues like a clogged drain or dirty filters. By addressing these problems early, you can avoid costly repairs and keep your system functioning efficiently. For expert help in diagnosing and fixing leaks, contact TRS Cooling today.