Why Does My Car AC Leak Water Inside?

(And What You Can Do to Fix It Fast)

Your car’s AC is supposed to cool you down, not leave a puddle on your floor mats. If you’ve noticed water leaking inside your car—especially near the passenger footwell—don’t ignore it.

It’s one of the most common AC issues, and while it’s not always serious, it can lead to mold, bad smells, and electrical damage if left unchecked.

Let’s break down the causes of water leaking inside your car from the AC, and how the team at HaseebAutomotive.com can help you fix it.

Is It Normal for the AC to Leak Water?

Yes and no.
It’s normal for your car’s AC to produce water due to condensation.
But it should drain outside the car, not into the cabin.

When the system’s drain line is blocked or damaged, that condensation has nowhere to go—so it leaks inside.

Common Reasons Your Car AC Is Leaking Water Inside

1. Clogged AC Drain Line

This is the most common cause. The drain line removes condensation from the evaporator coil. When it gets clogged with dirt, leaves, or mold, water backs up—and leaks into your car.

Signs:

• Wet carpet or mats (usually front passenger side)
  
  
• Musty smell inside the car
  
  
• AC works fine, but there’s pooling water
  
  

Fix:
At HaseebAutomotive.com, we clean or replace clogged AC drain lines so water flows out properly again.

2. Damaged or Disconnected Drain Hose

Sometimes, the drain hose becomes loose or cracks, causing water to leak under the dashboard.

Fix:
We inspect the drain hose connection and repair or replace it to stop the leak at the source.

3. Dirty or Frozen Evaporator Coil

A dirty air filter or low refrigerant can cause the evaporator coil to freeze. When it melts, it releases excess water—more than the system can drain quickly.

Signs:

• Weak AC cooling
  
  
• Icy or foggy vents
  
  
• Water leaking inside after turning AC off
  
  

Fix:

• Replace cabin filter
  
  
• Check refrigerant level
  
  
• Clean evaporator coil
  
  

We handle all of this with AC system diagnostics at HaseebAutomotive.com.

4. Improper AC Installation or Repair

If someone installed your AC components incorrectly, the drain line might not be angled properly, or may be routed inside instead of out.

Fix:
We’ll inspect the AC system and correct any installation issues professionally.

5. Excessive Humidity or Short Trips

In humid climates (like Dubai), AC systems generate a lot more condensation. If you make frequent short trips, your car may not run long enough for the system to drain properly.

Tips:

• Run the fan (without AC) for a few minutes before turning the engine off
  
  
• Park in shaded areas when possible
  
  

What Should You Do If Water Is Leaking Inside?

Step 1: Don’t panic—but don’t ignore it
Step 2: Soak up the water to prevent mold
Step 3: Book a professional AC inspection

At HaseebAutomotive.com, we offer:

 Full AC leak diagnosis
  Drain line cleaning
  Evaporator coil cleaning
  Filter replacement
  AC performance check & tune-up

How to Prevent It in the Future

• Replace cabin air filter every 12,000–15,000 km
  
  
• Get your AC inspected before the summer season
  
  
• Don’t block air vents with papers or bags
  
  
• Avoid DIY fixes—leave it to the pros
  
  

If your car AC is leaking water inside, it’s usually a simple fix—but waiting too long can lead to bigger issues like moldy carpets and wiring damage.

Let the experts at HaseebAutomotive.com inspect and fix the leak quickly, so you can drive in comfort (and dry socks!).

Visit us in Al Quoz or book your AC service online today.

Say goodbye to soggy carpets with expert AC care from HaseebAutomotive.com!
Dry. Cool. Reliable.