Heater Core: Description and Operation

HEATER CORE

When the water valve is open, hot engine coolant circulates through the heater core. The heater core heats the air that passes through it; the hot air can then be used to warm the passenger compartment. The heater core (like the radiator) is also a "heat exchanger."

Refer to repair procedures on:

- Pressure testing cooling system
- Flushing cooling system
- Bleeding cooling system