How Often Should You Recharge Your Car's Air Conditioning Refrigerant?
1 Answers
There is no fixed replacement interval for car refrigerant, as it depends on the specific usage conditions and cooling performance of each vehicle's air conditioning system. If the car's air conditioning shows poor cooling performance, an inspection is required. If it is caused by insufficient refrigerant, timely replenishment is necessary. Here are the methods to determine whether refrigerant recharge is needed: 1. Turn on the vehicle's air conditioning with the A/C light on, set to maximum cooling, internal circulation, and maximum fan speed. Use a thermometer to measure the outlet temperature, which should gradually decrease. Record the operating temperature after 1, 2, and 3 minutes of air conditioning operation. 2. Open the hood and feel the low-pressure pipe of the air conditioning compressor with your hand; the pipe should become cool. 3. After 3 minutes of measurement, press the accelerator for 2-3 minutes to maintain the engine at 1500 RPM. Connect the pressure gauge to the low-pressure pipe port (L). The gauge can indicate whether the car's air conditioning compressor and expansion valve are functioning normally and whether the refrigerant is sufficient. Values within the green range on the pressure gauge are normal, and the electronic fan near the front of the vehicle's air intake should be working properly. 4. Ensure there is no large-scale blockage on the surface of the radiator.
