What are the symptoms of a blocked car air conditioning pipeline?

2 Answers
CharlieMarie
07/25/25 6:42am
Symptoms of a blocked car air conditioning pipeline include lack of cooling. Here is additional information: 1. Introduction: The air conditioning compressor plays a role in compressing and driving the refrigerant in the air conditioning refrigeration circuit. The air conditioning compressor is generally installed in the outdoor unit. The air conditioning compressor draws the refrigerant from the low-pressure area, compresses it, and sends it to the high-pressure area for cooling and condensation. The heat is dissipated into the air through the heat sink, and the refrigerant changes from a gaseous state to a liquid state, with increased pressure. 2. Working circuit: The working circuit of the air conditioning compressor is divided into the evaporation zone (low-pressure area) and the condensation zone (high-pressure area). The indoor and outdoor units of the air conditioner belong to the low-pressure or high-pressure area (depending on the working state). The refrigerant then flows from the high-pressure area to the low-pressure area, is sprayed into the evaporator through the capillary tube, and the pressure drops sharply. The liquid refrigerant immediately turns into a gaseous state, absorbing a large amount of heat from the air through the heat sink.
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VanClara
08/10/25 6:16pm
The symptoms of a clogged AC line are quite obvious. Back when I drove an old car, the AC cooling performance in summer was terrible. The vents would only blow hot air or barely any cool air at all, making the car unbearably stuffy. The compressor would hum loudly but produce no cold air, and sometimes I'd even hear a hissing sound. Checking the dashboard, the AC pressure might show abnormal readings, and the high-pressure line would feel extremely cold or even frosty. This kind of blockage is caused by poor refrigerant flow, often due to dust or moisture buildup. Over time, the compressor can get overloaded and damaged. I recommend getting it checked and fixed at a repair shop as soon as you notice any signs to avoid suffering in hot weather—safety first.
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