The air conditioner should be recharged with the freon specified in the car technical documents. Before recharging, clean the cavities of the radiators with special agents and remove air and residual vapors from the air conditioner. It is required to use metrological station, hoses, adapters, a coupling connecting a pressure gauge for recharging. The procedure for recharging freon is as follows: clean and open the low pressure line section of dirt, attach a hose to the charging adapter, start the engine and maintain it at a certain speed, make sure that air recirculation works at maximum, open the low pressure line valve and the valve of the refrigerant cylinder. As the air conditioner is recharged, the pressure gauge is monitored. In the end, cold air begins to flow into the passenger compartment.