How to Deal with Air Conditioner Water Corrosion on Cars?
2 Answers
Use toothpaste to clean the car body. Apply an appropriate amount of toothpaste to the water stains, then wipe with a soft towel. Repeat several times and rinse with water. Dishwashing liquid can also remove stubborn water stains. Apply an appropriate amount to the water stains, gently rub with fingers, wipe with a dishwashing sponge, rinse with water, and repeat several times. Go to an auto paint repair shop and use a fine abrasive polishing agent to polish the surface of the car body. After polishing, apply wax to prevent water stains from sticking.
I discovered that my car was corroded by air conditioning condensate, which is no small issue. The condensate contains acidic substances that can damage the car paint over time and even affect metal components in severe cases. I just encountered this problem last week when I parked under an air conditioner unit downstairs and noticed water stains on the roof. I immediately rinsed the affected area with clean water and then applied a neutral car wash soap to thoroughly clean the corroded spot. If there are already visible spots on the paint, I recommend visiting a professional car wash for polishing and repair—it’s an affordable fix. To prevent this, always park away from areas where air conditioners drip, and consider using a car cover for added protection. Most importantly, develop good habits: inspect your car’s exterior after rain or washing, and regularly check your air conditioning system for leaks to avoid self-inflicted damage. Corrosion may seem slow, but accumulated damage can be costly—early action saves hassle.
