Why is the car air conditioning blowing air but not cold?

[MacHaven]

Reasons why the car air conditioning blows air but not cold: 1. Compressor aging or damage: The cooling function of the air conditioning mainly relies on the operation of the compressor. If the compressor belt is loose, aged, or damaged, only the blower will operate, which blows natural air, resulting in the air conditioning not being cold. 2. Circulation mode: Check if the air conditioning is in the internal circulation mode. The external circulation mode will bring high temperatures from outside the car into the interior. 3. Air vents: Cold air tends to sink, so check if the air vents are set to blow upwards. 4. Refrigerant: Too much or too little refrigerant will affect the cooling effect. Too much refrigerant can affect heat dissipation, while too little can reduce cooling efficiency. 5. Clogged filter: Long-term use of the air conditioning can cause dust to accumulate on the filter, which hinders the entry of cold air into the car. 6. Water ingress: If the dryer bottle in the air conditioning system absorbs too much water, the moisture in the refrigerant can freeze in small holes, thereby affecting the flow of the refrigerant.