Why is the air conditioning not as cool in the second year as it was in the first year for a new car?
2 Answers
The air conditioning system may be clogged due to excessive dust in the evaporator box. It is recommended to replace the air filter twice a year. Air conditioning system: For example, if components such as the compressor or expansion valve are damaged, it is advisable to visit a 4S store for inspection and repair. Check if the air filter is clogged, which may result in reduced airflow. Replacing the air filter can resolve this issue. Additionally, if the condenser is blocked by external debris during the process of dissipating heat from the refrigerant, leading to poor heat dissipation and reduced cooling efficiency, rinsing it with a water gun can solve the problem. Deterioration in cooling performance: If the air conditioner's internal filter or evaporator has not been cleaned for a long time, it can affect the efficiency of cooling and heating. After prolonged use, the refrigerant may be insufficient. Refrigerant is like gasoline; without enough, the car won't run far, and the same applies to the air conditioner. If the external unit's radiator has accumulated too much dust, it can hinder the air conditioner's heat dissipation.
My car's air conditioning worked quite well last summer, but this year it doesn't feel as cool. The main issues are caused by usage wear and maintenance neglect. Although the AC system in a new car is highly efficient when first purchased, by the second year, if not properly maintained, the refrigerant may have minor leaks leading to insufficient levels, the air filter may get clogged reducing airflow, and dust accumulation on the condenser surface can affect cooling efficiency. These are common causes. I recommend regularly cleaning the filter, replacing it at least once a year, and checking the Freon pressure to see if it needs topping up. Additionally, driving habits like frequent hard acceleration or parking in dusty areas can accelerate system aging. Identifying these issues early is simple—just get a professional inspection to restore performance. Don’t wait until it breaks down to fix it, as that will affect driving comfort.
