What are the precautions for cleaning a car's air conditioning system?

[TessaDella]

Precautions for cleaning a car's air conditioning system are as follows: 1. When using cleaning solution or foam, ensure the air conditioning drain is unobstructed to prevent water accumulation that could damage electrical components. 2. After cleaning, open the car doors and preferably air dry for one hour. 3. Upon completion of the operation, use diagnostic equipment to check the system computer for any fault codes. Verify all functions are operating normally. 4. Replace the cabin air filter after cleaning. Generally, it's recommended to replace the cabin air filter at least once a year. The replacement process for electric vehicle cabin air filters is the same as for fuel-powered vehicles. Detailed steps for cleaning a car's air conditioning system: 1. First locate the air intake vent connected to the air outlets, typically positioned at the lower right side of the windshield or beneath a central cover panel. 2. Set the air conditioning fan to maximum speed and activate the external circulation mode. 3. Open the intake vent cover using hands or a screwdriver. 4. Connect the tube attached to the cleaner and spray into the intake vent, reapplying every few seconds (rather than continuous spraying) to allow circulation. The blower will draw the cleaner into the air ducts. Change circulation modes to ensure all ducts are cleaned. 5. After 15 minutes, turn off the air conditioning. The cleaner will drain out with condensation water. When no more condensation flows from the ducts, turn on warm air to evaporate residual cleaner inside the system, then leave windows open for ventilation. 6. The car's air conditioning cleaning process is now complete.

[JasonLynn]

When cleaning the car air conditioning system, I pay attention to details from a professional perspective: First, ensure the vehicle is turned off and parked in a shaded, well-ventilated area, as operating under high engine temperatures may cause burns or release harmful gases. Use dedicated car air conditioning cleaner instead of household cleaners to avoid corroding pipeline components. Before cleaning, remove the air filter for cleaning or replacement to prevent dust blockage from affecting the results. When cleaning the evaporator tray, use a spray bottle to slowly apply the cleaner into the air intake to avoid liquid entering electronic components and causing short circuits. After completion, turn on the air conditioning at high speed with external circulation for 10 minutes to discharge residues. Check the pipelines for mold spots and address them promptly to prevent odors from affecting respiratory health. Regular cleaning once a year extends the system's lifespan and reduces bacterial growth, which is especially important during frequent summer use. If abnormal noises or persistent odors are detected, it indicates the need for a deep cleaning at a 4S shop to avoid higher repair costs.

[LolaRose]

I always prioritize safety when cleaning my car's air conditioning system: wear gloves and a mask for protection before starting, as cleaning agents may contain irritating chemicals—ensure proper ventilation and avoid working in enclosed garages. During cleaning, make sure the AC is turned off and disconnected from power, keeping fingers away from fan blades to prevent injuries. Use professional-grade cleaners to avoid allergic reactions caused by inferior products; after cleaning, residual odors are common—leave windows open for at least an hour before re-entering the vehicle. Also, check if AC ducts are unobstructed, as blockages can reduce efficiency and even increase fuel consumption, leading to extra costs. If unsure about DIY methods, opt for professional services—though more expensive, it guarantees safety and reliability, preventing costly damage to motors or wiring. Remember, regular maintenance prevents bacterial growth, safeguarding family health, especially during autumn and winter when heating is frequently used for better results.