Water leaking from your AC is one of the most common and frustrating problems. Not only can it damage your walls and furniture, but it also indicates an underlying issue that needs attention. Here are the 8 most common causes of AC water leakage and how to fix them.
8 Causes of AC Water Leakage
1. Clogged Drain Pipe
The most common cause! The drain pipe carries condensation water from the indoor unit to outside. Dirt, algae, and mold can block this pipe over time.
Fix: Professional drain pipe cleaning using specialized tools. Home Fixer cleans and flushes the drain pipe during every service visit.
2. Dirty Air Filters
When air filters are dirty, the evaporator coil gets too cold and freezes. When it melts, excess water overflows the drain pan.
Fix: Clean or replace air filters regularly. If ice has formed, turn off the AC and let it defrost before cleaning.
3. Improper Installation
If the indoor unit isn't leveled correctly (should have a slight tilt towards the drain), water doesn't flow properly to the drain pipe.
Fix: Re-level the indoor unit with a slight downward angle (1-2 degrees) towards the drain side.
4. Broken Drain Pan
The drain pan under the evaporator coil can crack or rust over time, causing water to leak directly.
Fix: Replace the drain pan. This requires professional disassembly of the indoor unit.
5. Low Refrigerant Gas
Low gas causes the evaporator coil to freeze. When the ice melts, it creates more water than the drain system can handle.
Fix: Get the gas level checked and refilled by Home Fixer. We also fix any leaks before refilling.
6. Frozen Evaporator Coil
Beyond dirty filters, restricted airflow from closed vents or a malfunctioning blower can freeze the coil.
Fix: Ensure all vents are open and the blower is working. Professional coil cleaning may be needed.
7. Disconnected Drain Pipe
The drain pipe can get disconnected due to poor installation or accidental bumping.
Fix: Reconnect and secure the drain pipe with proper fittings and insulation.
8. Outdoor Temperature Too Low
Using AC when the outdoor temperature is below 16°C can cause the indoor coil to freeze and leak water.
Fix: Use the fan mode when temperatures are low, or switch to a model with better low-temperature performance.
Quick DIY Fixes You Can Try
When to Call Home Fixer
If the above steps don't resolve the issue, call Home Fixer at 08851017494. Our technicians arrive within 2 hours and fix most water leakage issues same-day with a 90-day warranty.
