What are some common issues with car air conditioning systems?


Quick Answer

Bacteria build-up, a low refrigerant level, refrigerant leaks and clogged air intakes are some common issues associated with car air-conditioning systems. These problems can produce a variety of symptoms, and some of the symptoms are indicative of multiple types of air-conditioning problems.

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What are some common issues with car air conditioning systems?
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Full Answer

If the air coming out of the vents is cold but there is a reduction in the airflow, it can be a sign of blockage around the air intake. The compressor unit has to breathe in order to generate proper airflow. Dirt, grime and debris sometimes clog the compressor, which requires periodic cleaning.

When there is good airflow from the vents but the air is not cold, this can be indicative of a low level of refrigerant in the system. Adding refrigerant is a remedy for this problem, but if the cause is a leak in one of the refrigerant lines, the fix is not permanent, and it may require professional servicing.

A foul odor coming from the air conditioner vents is usually a sign of bacteria, mold or fungi that can grow in the ventilation system during periods of low usage. Changing the cabin air filter and cleaning out the evaporator pan are good places to start.

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