What is the reason why the car air conditioner sometimes blows cold and sometimes not?
2 Answers
Car air conditioner sometimes blows cold and sometimes not due to insufficient refrigerant, which can be resolved by timely replenishment. When replenishing, it is important to identify whether it is R12 type or R134a, as the two cannot be mixed. Car air conditioning refers to the air conditioning device installed in a vehicle, which can cool, heat, ventilate, and purify the air inside the cabin, providing a comfortable riding environment for passengers, reducing driver fatigue, and improving driving safety. Car air conditioning generally includes cooling devices, heating devices, and ventilation devices. This combined system makes full use of the limited space inside the car, featuring a simple structure and ease of operation.
I recently experienced the issue of my car's air conditioning blowing hot and cold intermittently. The main cause is usually insufficient refrigerant or a minor leak, leading to inadequate pressure and inconsistent cooling. Problems with the cooling system are also common—when the radiator grille at the front gets clogged with willow catkins, the entire system's efficiency drops significantly. Worn compressor clutches can also cause the compressor to work intermittently, especially noticeable in traffic jams. A good tip is to test the AC in the cooler morning hours. If it still doesn’t cool properly, prioritize checking refrigerant pressure and flushing the radiator, then leave any electrical issues to the repair shop.
