Using air-conditioned warm air in winter will neither affect power nor increase fuel consumption. A/C switch controls the compressor, and some models only have refrigeration function in order to save cost. Therefore, you can't turn on the A/C key in winter, and some models of compressors can only refrigerate, which will only be counterproductive. The signs of car warm air are as follows:
Extended data:
The heat source of the car air conditioner heater is provided by the engine coolant, that is, the water in the water tank. Two water pipes are led out from the small circulation loop of engine coolant and connected to the heater box inside the air conditioning assembly. This small water tank provides heat source for the air conditioning heating system. Even in summer, the coolant of over 90 degrees will pass through this small warm air tank.
Using air-conditioned warm air in winter will neither affect power nor increase fuel consumption. A/C switch controls the compressor, and some models only have refrigeration function in order to save cost. Therefore, you can't turn on the A/C key in winter, and some models of compressors can only refrigerate, which will only be counterproductive.
Phoenix. com-A new car in mind: Tips for the correct use of warm air defogging in winter cars