What to Do When Water Leaks Under the Passenger Seat When the Air Conditioner Is On?
2 Answers
Some cars have poor-quality drainage pipes that are prone to aging and loosening, causing water to leak under the passenger seat when the air conditioner is on. In this case, the drainage pipe needs to be replaced. If the air conditioner was not installed securely, it may shift abnormally after prolonged use, causing the drainage pipe to move and making drainage difficult. Condensation on the pipes. If the insulation material on the pipes is of poor quality or too thin, condensation is likely to form when the refrigerant passes through.
I've encountered this issue before. Water dripping under the passenger seat when the AC is on is quite common. It's mostly caused by a clogged drain pipe from the AC evaporator. The condensate water that should drain outside the car gets blocked and flows into the interior instead. I suggest first checking under the passenger side carpet - use a screwdriver to lift the floor mat and look for a small pipe opening that might be clogged with dust or leaves. Just use compressed air to blow it clear or a thin wire to unclog it. Don't underestimate this issue - accumulated water can cause mold, rust, unpleasant odors, and even damage wiring. If the pipe is aged or damaged, spend some money at an auto shop to replace it. When parking, try to find a slope to help drainage, and regularly clean the AC system to prevent recurrence. After fixing it, remember to wipe dry any water stains to avoid moisture causing other problems. Simple maintenance can save you from bigger troubles.
