What is the reason why warm air is slow?

The heat energy of automobile warm air is cooling water. The reason for the slow temperature rise is that the engine has just started and the water temperature is not hot. As long as the water temperature rises to 90 degrees, the heating will be normal. If you use heating, you don't need to turn on the AC switch. The AC key is the key to turn on the automobile air conditioning and refrigeration. When you press this button, the compressor will start working and start blowing cold air.

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Matters needing attention when turning on the heating.

Don't sleep in the car: Like the principle of turning on the air conditioner, if the fuel is not completely burned when the engine is working, it will produce high concentration of carbon monoxide. When the car is driving, the air inside the car can be convectively replaced by air conditioning equipment, so the concentration of carbon monoxide is very low.

Don't smoke in the car: when the heating is turned on, the car is a closed space, which is easy to produce bacteria. Smoking in the car is inherently harmful to health, and both first-hand and second-hand smoke have been smoked. Moreover, amine and nicotine in the flue gas will adhere to the surface of the evaporator. When the air conditioner is not commonly used and it is rainy, bacteria will spread on the evaporator surface, and turning on the air conditioner again will cause vehicle air pollution.