How often should refrigerant be added to a new car?

[ElenaAnn]

If you notice a decline in cooling performance, you can check whether there is a refrigerant shortage. There is no fixed interval for replacement—as long as the cooling works fine, no topping up is needed. It is recommended to inspect it every two years. Below are additional details on when to check for refrigerant replenishment: 1. During normal continuous operation of the air conditioning: If bubbles continuously appear in the sight glass, it indicates insufficient refrigerant and requires topping up. If no bubbles are visible in the sight glass, and no temporary bubbles appear when the air conditioning stops, it means there is an excess of refrigerant, which needs to be released. If no bubbles are visible in the sight glass, but temporary bubbles appear when the air conditioning stops, it indicates the refrigerant level is normal. 2. Open the car hood: Check if there are oil stains on the air conditioning system joints. If present, it likely indicates a refrigerant shortage. Before adding refrigerant to the car air conditioning, a comprehensive inspection of the vehicle's air conditioning system must be performed to ensure there are no leaks in the equipment before proceeding.