Mazda CT-L1005, Training Manual

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Fundamentals Basic Climate Control
Warming the Air in the Vehicle
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To carry the second example across to the vehicle, think of the heater core as the cup of
coffee being brought into a relatively colder room. The heater core gives its heat up to
the outside air that comes in contact with the fins. The heat travels from the warm heater
core to the cold air. Unlike the coffee in our example, the heater core receives a
continuous flow of hot coolant from the engine, and so will continue to give off heat as
long as the engine is running.
L1005_004
1 Cold air 3 Heater core
2 Warm air
02-4 Curriculum Training