Why does the car feel not cool after replacing the air conditioning filter?

[McCalvin]

The reason is incorrect operation, such as the air conditioning switch not being turned on, the air outlet being closed, or the wind direction being incorrect. It could also be due to using the external circulation mode in hot weather. In short, it's necessary to identify the correct cause and then operate properly. Other reasons for the car not cooling: 1. Insufficient refrigerant: Sometimes, insufficient or too little refrigerant in the car's air conditioning system can cause the air conditioning not to cool. The main reason for insufficient refrigerant is usually minor leaks in the system. 2. Loose compressor drive belt: A loose compressor drive belt in the car's air conditioning system can cause slipping during operation, leading to reduced transmission efficiency, decreased compressor speed, and reduced delivery of compressed refrigerant, resulting in the car's air conditioning not cooling.