What to Do When the Car Evaporator Box Leaks?

[SanMiguel]

Check whether the radiator is cracked or corroded, and take some remedial measures to avoid damage caused by installation or collision. Secondly, if the leakage is not serious, you can use soldering to repair the leaking area. Check whether the radiator drain switch is leaking or if there are holes or cracks in the upper and lower water chambers, and repair them accordingly.

[Olga]

I previously encountered an issue with water leakage from the car's evaporator box, which is actually quite common—it's when the condensate from the AC can't drain properly. The main cause is usually a clogged drain pipe, often due to small insects or debris blocking it. You can start by checking the drain hole under the car and gently poking it with a wire or toothpick to see if it clears. If that doesn’t work, you may need to disassemble it to inspect whether the evaporator core is damaged. I recommend cleaning the AC filter during regular maintenance to prevent leaves or debris from clogging the drain pipe. Don’t delay, as water leaking into the car can lead to rust and mold, especially in hot summer weather. If you notice wet carpets while driving, it’s best to stop and check immediately to avoid short circuits or other safety risks. Consider visiting a repair shop—they can fully resolve the issue, and the cost is usually reasonable, typically just a few hundred bucks.

[FelixDella]

Last month, my car's evaporator also started leaking. At first, I was quite panicked because water would drip onto the floor mats when the AC was turned on, which was really annoying. I thought it might be dust clogging the drain pipe, so I tried blowing it out with an air gun, but it didn't clear. Later, I removed the glove box myself, located the evaporator, and used a soft tube to unclog the drain hole, after which the water flowed out properly. If left untreated, accumulated water can corrode the floor and even affect electronic components. For prevention, it's good to clean the AC system every six months, especially if driving in humid areas where drain holes are prone to getting clogged with mud. I also found that avoiding prolonged use of recirculated air and switching to fresh air mode more often helps prevent water buildup. If you can't fix it yourself, seek professional help immediately—don't risk driving with the issue. Safety first. Remember, regular maintenance can save you a lot of trouble.

[LeBennett]

Fixing a leaking evaporator is not difficult. First, check if the air conditioning drain pipe is clogged. Locate the small hole under the car and use a soft wire to poke it. If it clears and water flows out, that's good; if not, the evaporator might be damaged and need replacement. Prevention involves regularly cleaning the air conditioning filter to avoid water accumulation and rust. Seeking help from a repair shop is the safest option.