What Are the Reasons for Insufficient Cooling in a Car's Air Conditioning?

[LucasFitz]

There are several reasons why a car's air conditioning may not be cooling sufficiently, including too much or too little refrigerant, or a clogged filter. Below is an introduction to the relevant knowledge about car air conditioning not cooling properly: 1. Too much or too little refrigerant: In the air conditioning system, the proportion of refrigerant has specific requirements. Too much or too little can affect the cooling performance. If there is too little refrigerant, the amount sprayed into the evaporator by the expansion valve decreases, leading to reduced cooling capacity. Conversely, too much refrigerant can affect heat dissipation, as greater heat dissipation results in better cooling. 2. Clogged filter: Car air conditioners are equipped with air filters, which are filtering devices designed to block impurities. If not cleaned or replaced for a long time, accumulated impurities can clog the filter, preventing cold air from coming out and reducing cooling efficiency.