How to Clean the Car Air Conditioner Evaporator Box?

[HaydenDella]

Steps to clean the car air conditioner evaporator box: 1. Remove the air filter and blower of the vehicle to be cleaned. Place a clean water basin under the air conditioner drain outlet at the bottom of the car to collect wastewater. Adjust the endoscope camera bend at the specified position on the cleaning machine to an appropriate angle to clearly understand the location and contamination of the car evaporator box. 2. Load the cleaning agent onto the cleaning gun, position the spray nozzle near the upper part of the evaporator box, and evenly spray the cleaning agent onto the evaporator box. Replace the cleaning agent in the spray gun, and use the high-pressure spray force to form a fan-shaped spray, repeatedly flushing the evaporator box from top to bottom. 3. Pour two 500ml bottles of water into the empty cleaning agent bottle, and repeatedly rinse the evaporator box to remove residual cleaning agent. Finally, evenly spray a long-lasting antibacterial agent for car evaporator boxes onto the evaporator box until it is completely used up. 4. After cleaning, first install the blower and start the car to dry the evaporator box. Then, use an atomizing antibacterial machine to perform atomized sterilization of the air conditioning ducts. With the car running, turn on the air conditioner's internal circulation mode, set the fan speed to maximum, turn off the AC mode, and start the atomized sterilization. Close the car doors; after about 4-5 minutes of duct atomized sterilization, remove the machine and open all four doors for ventilation for about 15 minutes.

[VanEmery]

I have hands-on experience with cleaning a car's AC evaporator box. Last summer, there was a musty smell in my car, so I decided to do it myself. First, locate the AC air intake, usually behind the glove compartment or near the engine bay, and spray a specialized cleaner inside. After spraying, wait about ten minutes for the foam to dissolve the dirt. Then, turn on the AC fan to dry it out, and the dirt will drain out through the discharge pipe. Finally, clean the drain pipe to prevent clogging. It's crucial to use an anti-mold cleaner—avoid regular sprays to prevent component corrosion. Cleaning it every quarter helps prevent bacterial growth, which can cause odors or allergies. The whole process takes about 20 minutes—saving money and improving health—and the AC feels fresh immediately. Remember to wear gloves for safety.

[LaCatherine]

Cleaning the evaporator box by yourself is not complicated. If you're a DIY enthusiast, first prepare an air conditioner-specific cleaner and protective gloves. Locate the air intake position, usually near the dashboard inside the car, remove the grille, and spray directly inside. After spraying, close the doors and run the system for ten minutes, allowing the cleaning foam to penetrate the core of the evaporator box, dissolving mold and dust. Run the fan to blow the dirt towards the drain pipe for removal. It's recommended to spray an antibacterial agent after cleaning to prevent recurrence. If your car shows signs of odor or hasn't been cleaned for a year, it's time to do it. The material cost is just a few dozen yuan, and after completion, the air circulation will be smooth, making driving more comfortable. Be careful not to over-spray, which could affect the motor. You can search for video tutorials online for the steps. It's simple and easy to learn, so keep up with regular maintenance.

[OLilliana]

Mold and bacteria growth in the evaporator box can harm health, making cleaning crucial. Clean it when you notice strange odors from the AC vents or throat discomfort while driving. The method is simple: purchase an automotive AC cleaner and spray it into the air intake a few times. Turn off the car and let the liquid soak for 15 minutes. Then, turn on the fan to expel the dirt. Professional shops may disassemble parts for deep cleaning, but DIY methods are usually sufficient. Check monthly to prevent odors—frequent cleaning isn’t necessary, but aim for at least once a year to ensure good air quality and avoid respiratory issues. The tools are affordable and available at auto parts stores, making it an easy fix.

[KendraLee]

Cleaning the evaporator yourself is cost-effective, with a bottle of cleaner costing just a few dozen yuan. After spraying it into the AC air intake, wait for the detergent to dissolve the dirt, then use a fan to blow it clean—simple process. In contrast, professional repair shops may disassemble and clean it more thoroughly, which is more expensive but suitable for older vehicles or stubborn odors. Regular maintenance, such as cleaning before each summer, prevents bacterial buildup and reduces future repair costs. Opt for reputable brands to avoid damage from low-quality products, ensuring economical and efficient long-term AC performance.