Mitsubishi aircon Water Leaking
A water-leaking Mitsubishi aircon is one of the most common issues faced by homeowners and businesses in Singapore. Whether you’re using a Mitsubishi Starmex system or a multi-split setup, water dripping from the indoor unit is a sign that something inside your air conditioner isn’t working the way it should. While it may look like a small problem, leaving a leak untreated can lead to ceiling stains, mould growth, and even a full system breakdown.
In this guide, we’ll explain why your Mitsubishi aircon is leaking water, what causes it, and how LetsCool Aircon can fix it quickly and professionally.
The Most Common Reasons a Mitsubishi Aircon Leaks Water
Clogged Drain Pipe
Your aircon constantly produces condensation. When the drain pipe gets blocked by dirt, slime, or algae (very common in humid Singapore), water can’t escape and starts leaking from the front panel or sides.
Dirty or Blocked Air Filter
A dirty filter restricts airflow and causes the cooling coil to freeze. Once the ice melts, excess water overflows and drips from the indoor unit.
Dirty Cooling Coil
Over time, dust and bacteria accumulate on the evaporator coil. When the coil is dirty, condensation doesn’t drain properly, leading to water overflow inside the unit.
Low Gas / Refrigerant
Low refrigerant causes the cooling coil to freeze up. When the ice melts, you get sudden water leaking from the indoor unit.
Improper Aircon Installation
If your Mitsubishi unit is not installed level or the drain pan is tilted, water flows in the wrong direction and starts dripping.
Full or Damaged Drain Pan
A cracked or full drain pan cannot hold excess condensation, resulting in water leakage.
Can You Fix a Water-Leaking Mitsubishi Aircon Yourself?
You can try simple checks before calling a technician:
- Clean your air filter
- Ensure the unit is not tilted
- Switch off the aircon for a few hours to let ice melt
Refer: Aircon repair service
However, most leaks come from internal blockages, dirty coils or gas issues — these require professional servicing with proper tools.
Attempting to dismantle the unit on your own can damage the drain pipe or coil, making the repair more expensive. For Mitsubishi units, it’s always better to get a trained technician to inspect the system.
How LetsCool Aircon Fixes Mitsubishi Water Leaks
At Letscool Aircon, we use a thorough diagnostic approach to ensure the leak is fixed correctly and doesn’t return.
Our process includes:
✔ Checking and clearing the drain pipe
✔ Inspecting and cleaning the evaporator coil
✔ Checking for low gas pressure
✔ Cleaning the blower wheel and drain pan
✔ Testing the installation angle and drainage flow
✔ Ensuring the entire system is leak-free
Most leaks can be fixed within a single visit, and we provide affordable, transparent pricing with no hidden charges.
Preventing Future Water Leaks
You can reduce aircon leaking problems by:
- Servicing your Mitsubishi aircon every 3–4 months
- Cleaning filters regularly
- Booking chemical wash or overhaul for older units
- Avoiding long periods without maintenance
24 hours Emergency aircon service
Regular servicing helps prevent major breakdowns and keeps your aircon cooling efficiently.
Need Fast Help? Contact Letscool Aircon Today!
If your Mitsubishi aircon is leaking water, don’t wait until it damages your walls or ceiling. Letscool Aircon offers fast, professional, and islandwide service for all Mitsubishi models.
📞 Book your service with LetsCool Aircon today — we fix water leaks quickly and reliably.
