What are the reasons for poor cooling performance of the air conditioning in a newly purchased car?

[AdelineLynn]

Reasons for poor cooling performance of the air conditioning in a newly purchased car are as follows: 1. Insufficient or too little refrigerant: A common cause of the car air conditioning not cooling is insufficient or too little refrigerant, which is likely due to minor leaks. 2. Excessive refrigerant: The proportion of refrigerant in the air conditioning system is strictly required. If the proportion is too high, it can affect heat dissipation. Similarly, adding too much cooling oil during maintenance can also reduce the heat dissipation of the cooling system. 3. Loose drive belt of the car air conditioning compressor: Car cooling relies on refrigerant, refrigerant transmission depends on the air conditioning compressor, and the drive belt is an essential moving part that drives the compressor. If the drive belt is loose, the compressor may slip during operation, leading to reduced transmission efficiency, decreased compressor speed, and reduced refrigerant delivery, resulting in the car air conditioning not cooling properly.