How to Clean Car Air Conditioning Pipes?

[DiIsaac]

This can be purchased online or at auto parts stores. Attach the hose from the package and set the air conditioning to external circulation with the fan at maximum speed. The suction inside will draw the cleaning agent in, thereby cleaning the air conditioning pipes. Special attention should be paid to ensuring the cleaning agent's hose is not too close to the blower. You can let the air conditioning system run in external circulation mode for 10 minutes, but make sure to do this while the engine is idling to avoid draining the battery.

[Lola]

Cleaning car AC ducts is actually not difficult, I often do it at home myself. First, turn off the AC, start the engine, set the fan to maximum but keep the A/C button off, and switch to external air circulation. Then locate the AC air intake, usually behind the glove compartment on the passenger side. Connect the specialized AC cleaner to a hose and spray it evenly into the air intake. After spraying, keep the AC running for 10 minutes to allow the foam to thoroughly dissolve mold and dust in the ducts. Don't forget to remove and clean or replace the cabin air filter, otherwise it will get dirty again right after cleaning. Finally, open the windows for ventilation for half an hour to dissipate the chemical smell. The whole process takes about half an hour and saves over 200 yuan compared to going to a dealership.

[ElizabethFitz]

Last time during maintenance, the technician taught me a simple method: purchase an automotive AC cleaning kit online for just over 30 yuan, which comes with a visual spray nozzle. After removing the AC filter, insert the cleaning agent hose into the evaporator core area, spraying while observing the dirt dissolution through a small camera. Focus on cleaning the evaporator fins where grime easily accumulates, as these spots are most prone to bacterial growth and odor formation. After cleaning, remember to rinse the pipes with clean water to prevent residual cleaning agent from corroding metal components. Do this cleaning annually when replacing the AC filter before summer - it maintains air freshness while preventing AC cooling efficiency decline.

[LeJaxon]

Cleaning the air conditioning system requires four key steps. First, inspect the cabin air filter - replace immediately if it appears blackened or moldy. Second, use compressed air to blow out dust accumulation in ventilation ducts, particularly the intake vents beneath the windshield. The most critical third step involves injecting foam cleaner with antibacterial properties through the AC drain tube in reverse flow, directly treating the evaporator core. Finally, run the heater mode for 30 minutes to thoroughly dry the system and eliminate bacteria in moist areas. Important: Never use high-pressure water jets as they can damage the blower motor. This comprehensive cleaning eliminates musty odors, restoring fresh airflow throughout the cabin.