How often should car air conditioning refrigerant be recharged?
1 Answers
Car air conditioning refrigerant should be recharged every three years, but it is recommended to check the refrigerant level annually. Methods to determine whether refrigerant needs to be added: 1. Thermometer measurement: Use a thermometer to measure the temperature difference between the air inlet and outlet of the indoor unit. A difference of more than 8°C is normal—the greater the difference, the better the air conditioner's performance, with optimal differences reaching around 15°C. If the difference is below 8°C, refrigerant needs to be added. 2. Check for condensation: After running the air conditioner for about ten minutes, open the indoor unit panel and check the evaporator copper tubes covered with aluminum fins for heat exchange. A uniform distribution of condensation is normal—more condensation indicates higher humidity, while less indicates lower humidity. If condensation is uneven or only partially present, it may indicate a refrigerant shortage. Localized frosting or icing is also abnormal.