How to Fix Mitsubishi Aircon Water Leaking Issues

Mitsubishi Aircon water leaking

Mitsubishi Aircon Water Leaking

Mitsubishi aircon is known for its efficiency and durability, but even the best systems can sometimes encounter issues such as water leaks. Water leaking from your air conditioner can be more than just a nuisance; it can cause significant damage to your property if not addressed promptly. At Aircool Aircon, we’ve put together a detailed guide to help you identify and fix water-leaking issues in your Mitsubishi air conditioner.

Refer: Aircon water leakage Issues

Identifying the Cause of the Leak

Before you can fix the leak, you need to identify its source. Common causes include:

  • Clogged Drain Pipe: Over time, the drain pipe can become blocked with dirt, dust, and algae.
  • Dirty Air Filters: When air filters are dirty, airflow is restricted, causing the evaporator coil to freeze and then melt, leading to excess water.
  • Improper Installation: Incorrect installation can result in the unit being uneven, which can cause water to leak.
  • Low Refrigerant Levels: Low refrigerant levels can cause the evaporator coil to freeze. When it melts, it can lead to excess water leakage.
  • Damaged or Rusted Drain Pan: A damaged or rusted drain pan can cause water to leak out of the unit.

Step-by-Step Guide to Fix the Leak

1. Turn Off the Air Conditioner

Before performing any maintenance orAircon repair, turn off the air conditioner to ensure your safety and prevent any further damage.

2. Clean the Air Filters

Dirty air filters are a common cause of water leaks. Here’s how to clean them:

  • Remove the filters from the unit.
  • Wash them with warm, soapy water to remove dust and debris.
  • Let them dry completely before reinstalling them.
  • Clean filters regularly to prevent future leaks and improve efficiency.

3. Inspect and Clear the Drain Pipe

A clogged drain pipe can cause water to back up and leak out of the unit. To clean the drain pipe:

  • Locate the drain pipe and carefully remove it.
  • Use a vacuum to clear any blockages.
  • Flush the pipe with a mixture of water and vinegar to remove any remaining debris.
  • Reattach the drain pipe securely. Aircon servicing

4. Examine the Drain Pan

Check the drain pan for any signs of rust or damage. If the drain pan is compromised, it may need to be replaced. As a temporary fix, you can use a waterproof sealant to patch up small holes or cracks.

5. Verify Proper Installation

An uneven air conditioner can cause water to leak. Ensure that the unit is level. If it isn’t, adjust its positioning. You may need to add support brackets to keep the unit level.

6. Check Refrigerant Levels

Low refrigerant levels can cause the evaporator coil to freeze. If you suspect this is the issue, contact a professional technician. Handling refrigerants requires specialized skills and tools, and improper handling can be dangerous.

Regular Maintenance is Key

Regular maintenance can prevent most issues that cause water leaks. At Aircool Aircon, we recommend scheduling a professional maintenance service at least once a year. Our service includes:

  • Thorough cleaning of the unit
  • Checking refrigerant levels
  • Ensuring all components are in good working condition

Professional Help When Needed

If you’ve tried these steps and the issue persists, it may be time to call in a professional. At Aircool Aircon, our trained technicians have the expertise to diagnose and fix any air conditioning issues efficiently. Don’t let a small problem turn into a big one – get professional help to ensure your Mitsubishi air conditioner runs smoothly.


Water leaking from your Mitsubishi air conditioner can be a frustrating issue, but it’s usually fixable with the right approach. Regular maintenance, timely cleaning, and professional inspections are crucial to keeping your unit in optimal condition. If you’re experiencing persistent problems, don’t hesitate to contact Aircool Aircon for expert assistance. Your comfort and satisfaction are our top priorities.

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