What Causes Car Air Conditioning to Not Cool at Low Speeds but Cool at High Speeds?

[AvaRose]

Because when driving at high speeds, the engine speed and power are certainly greater than at idle, the efficiency of the air conditioning compressor is also relatively better. Here are the relevant explanations: 1. The reason for the air vents: Additionally, whether the internal circulation is on or not, some outside air will still be blown into the car through the vents. When the car speed is high, you can notice that the airflow from the vents is faster. For example, on highways, even without turning on the air conditioning, air will still blow in through the vents. 2. Condenser cooling effect: The cooling effect of the condenser is also better at high speeds. If there is a lack of refrigerant, simply replenish it in time. There is also a button in the car air conditioning system marked 'C', which is the internal circulation button, and it can completely block the airflow between the inside and outside of the car.