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Why is the warm air from the car's heater blowing cold?

1 Answers

VanMaci

07/24/25 7:41pm

Reasons why the warm air from the car's heater blows cold: The vehicle has just started, and the water temperature in the radiator is very low. It takes some time for the water temperature to rise. Turning on the heater at this time will not only make you feel cold air but also add extra burden to the engine, causing the water temperature to rise even more slowly. The correct way to use the heater: Let the vehicle run for a while first. When the water temperature gauge reaches half of the normal operating temperature, then start using the heater. After turning on the heater, use the external air circulation first to refresh the air inside the car, then switch to internal air circulation after a few minutes. The working principle of the car's heater is a non-independent residual heat heating system, which uses the heat emitted by the radiator, exhaust pipe, etc., to warm the air, and then the fan blows it into the car. Therefore, there is no need to activate the compressor when using the heater, and this is sufficient.

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