Does it cost fuel to turn on the warm air in a sedan in winter

Every car has a lot of features, most cars are installed with air conditioning, so after entering the winter, car owners and friends will turn on the air conditioning warm air system, the comfort of driving the vehicle will be significantly improved. Then winter sedan open warm air cost oil?

Winter sedan open warm air does not cost oil, because the air conditioning warm air is only the cooling system to collect the heat generated, and then secondary use, rather than the use of fuel to achieve the effect of warm air, so there will be no oil consumption.

The specific working process of warm air is as follows:

The engine will produce some heat when running, and this heat will be transferred to the coolant, so that the temperature of the coolant will slowly rise.

After the owner turns on the warm air mode, the coolant will enter the heat exchanger, and the blower will transfer the cold air inside the car to the heat exchanger, and the cold air and coolant will complete the temperature exchange.

The cold air will be heated, and the heated air will enter the car through the blower, so that the temperature inside the car rises, and the people inside the car can obviously feel the warmth.