What are the effects of not turning off the air conditioning before shutting down the car?
2 Answers
Not turning off the air conditioning before shutting down the car has negative effects, including increasing the load on the motor and causing unpleasant odors in the air conditioning system. The specific impacts are detailed below: Increased motor load: If the air conditioning is not turned off before shutting down the car, the starter motor will have to handle both the engine and the air conditioning during the next startup. This increases the load on the motor, and prolonged exposure to such conditions can damage the engine. Causes unpleasant odors in the air conditioning: If the air conditioning is not turned off before shutting down the car, water vapor will condense on the air conditioning evaporator, creating an environment conducive to bacterial growth, which can lead to unpleasant odors in the air conditioning system.
Leaving the air conditioning on before turning off the engine can indeed cause some issues. Primarily, the air conditioning compressor will immediately engage during the next startup, placing additional load on the engine during a cold start, which may increase wear and tear. This is especially problematic when the battery is aging, as it can make starting the engine more difficult. Additionally, the battery has to power the air conditioning during startup, consuming more electricity, which over time may shorten the battery's lifespan.
Moreover, condensation can accumulate inside the air conditioning system. If the engine is turned off without turning off the air conditioning, this moisture can remain in the pipes, promoting the growth of bacteria and mold, leading to unpleasant odors and affecting the air quality inside the car.
It is recommended to develop a good habit of turning off the air conditioning before shutting down the engine and letting the fan run for a few minutes to evaporate the moisture. This helps protect the car's components and extend their service life. Although car designs incorporate some protective measures, proactive maintenance is always more reliable.
