Diyvehiclerepair
Your AC's inside unit contains the evaporator coil that cools the warm air blown over it. This causes condensation (moisture) to form on the coil, just like how water droplets form on a cold glass of water on a hot day.
- Why is there water leaking from under my glove box?
- Why is there water under my car when AC is on?
- What would cause water to leak from under the dash?
- What is leaking on a passenger side of the car?
Why is there water leaking from under my glove box?
Water that enters the cowl in front of the windshield needs to come out that tube. Also, water that comes off the air conditioner evaporator comes out there. If it can't get out there, it will wind up inside the car through the heater/AC plenum. Small leaves and crud can work their way down to that tube and clog it up.
Why is there water under my car when AC is on?
Water leaking from under the car can be normal, especially on hot days when you've been cranking the A/C at full blast. Car A/C systems are actually designed to allow water to drain out of your vehicle. The system cools the cabin by pulling humidity from the air, and that moisture needs a place to go!
What would cause water to leak from under the dash?
Often it's a clogged drain hose from the air conditioner evaporator or condenser under the hood that comes through the firewall there. An auto tech can locate it and blow it out for you with a high pressure air hose typically. It usually gets backed up and leaks behind the glove compartment area on to the floor there.
What is leaking on a passenger side of the car?
Typically, this condensation merely drips out of the car onto the road as you drive. If you've ever noticed a car dripping some liquid from the undercarriage on a hot day, it's likely just condensation. However, just like the drains for the doors and sunroof, the A/C evaporator drain can become clogged.
