How to Fix an Air Conditioner Leaking Water Inside: A Step-by-Step Guide

Discovering water leakage from your air conditioner indoors can be concerning. However, several common issues can cause this problem. In this guide, we’ll walk you through a step-by-step process to identify and fix an air conditioner leaking water inside your home.

Step 1: Turn Off the Air Conditioner

  • Begin by turning off the air conditioning unit to ensure safety during the inspection and repair process.

Step 2: Identify the Source of the Leak

  • Locate where the water leakage is coming from. Check around the indoor unit, particularly near the evaporator coils and the drain line.

Step 3: Clear the Condensate Drain Line

  • Clogged drain lines are a frequent cause of leaks. Use a wet/dry vacuum, pipe cleaner, or a mixture of vinegar and water to clear any blockages in the drain line.

Step 4: Clean the Drain Pan

  • Remove any accumulated dirt or debris from the drain pan beneath the evaporator coils using a mild detergent and water solution.

Step 5: Check the Condensate Pump (if applicable)

  • Inspect the condensate pump to ensure it’s functioning correctly and is not clogged or malfunctioning.

Step 6: Inspect the Evaporator Coils

  • Dirty or frozen evaporator coils can cause leaks. Clean them gently using a soft brush or a commercial coil cleaner.

Step 7: Check the Air Filter

  • A dirty air filter can restrict airflow and lead to coil freezing. Replace or clean the air filter as needed.

Step 8: Ensure Proper Insulation

  • Inspect the insulation around the refrigerant lines and replace or repair any damaged or missing insulation that could cause condensation and subsequent leaks.

Step 9: Reassemble and Test

  • After addressing the issue, reassemble any components you’ve cleaned or removed. Turn the air conditioner back on and observe for further leaks.

Step 10: Schedule Regular Maintenance

  • To prevent future water leakage issues, consider scheduling annual maintenance for your air conditioning system. Professional HVAC services in Wesley Chapel can provide comprehensive maintenance and inspections.


By following these steps, you can troubleshoot and fix common causes of water leakage from your air conditioner. If the issue persists or if you’re unsure about any step, it’s best to seek professional help from certified HVAC Services in Wesley Chapel. Regular maintenance is crucial to ensure your air conditioning system operates efficiently and free from leaks.