Why does the 10th-generation Civic's AC only blow air without cooling?

[DiMaddox]

The reasons why the 10th-generation Civic's AC only blows air without cooling are as follows: 1. Refrigerant quality and purity: The quality and purity of refrigerant play a crucial role in vehicle AC systems. Typically, inferior refrigerant leads to inefficient AC operation. 2. Condenser and radiator: The heat dissipation condition of the condenser and radiator also affects AC performance. Long-term accumulation of debris and dust can cover these components if not cleaned regularly. 3. Refrigerant quantity: The misconception that more refrigerant is better is incorrect. During refrigerant charging, the amount must be precisely controlled - insufficient quantity causes low pressure in AC lines, while excessive quantity creates overpressure. 4. Expansion valve quality: As a key component in the refrigeration system (usually installed between the receiver-drier and evaporator), inferior expansion valves prevent the refrigerant from functioning properly.