Heater cores: transferring heat to cabin air

Useful to know

The internal heat exchanger transmits heat to the air in the compartment under the corresponding system. HELLA offers it as a separate component from the internal fan and its control. [1]

If the jet is strong but not warm enough, it is a different symptom from a weak airflow. The distinction does not only determine the cause, but makes the description more accurate. The specific vehicle may also include additional heating aids. Don't carry a circuit from a traditional engine onto any electric car just because everyone has a heating button.