Water Leaking Inside Car From AC
Water pools on the passenger floor or the carpet is wet when you use the AC. This is usually a blocked AC drain backing up inside the cabin.
Find a TechnicianCommon causes
- Clogged AC condensate drain tube
- Drain hose disconnected or kinked
- Frozen evaporator overflowing when it melts
- Blocked or dirty evaporator housing
- Heater core leak (if the water is sweet-smelling/oily)
Frequently asked questions
Is water under the car from AC normal?
Yes — water dripping under the car is normal condensation. Water INSIDE on the floor is not; it means the drain is blocked.
Could it be coolant instead of water?
If the wet spot is oily, sweet-smelling, or colored, it may be coolant from a leaking heater core, which is a different repair.
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