Why does the car blow hot air when the air conditioner is turned on?

1 Answers
SanCharlotte
07/29/25 5:51pm
There are several reasons why a car might blow hot air when the air conditioner is turned on: 1. Check if the air conditioner is set to cooling mode: If the cooling mode is not activated, no cold air will come out. The cooling switch for a car air conditioner is labeled AC. 2. Check if the external circulation mode is on: Running the air conditioner while the external circulation is active draws hot air from outside into the car, naturally reducing the cooling effect. Therefore, in hot weather, it's advisable to switch back to internal circulation after ventilating with external circulation. 3. Check if the car's air conditioning system is low on refrigerant: If the car is two or three years old and the air conditioner is not cooling or not cooling enough, it's highly likely that the refrigerant level is low. Generally, refrigerant loss is due to leaks, which can be either faulty or normal. Under normal circumstances, there might be minor leaks in the air conditioning pipes or condenser, so refrigerant typically needs to be replenished every two or three years.
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