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Heater Core

Heater Core refers to a radiator-like device used in heating the cabin of a vehicle. Hot coolant from the vehicle's engine passes through a winding core tube, a heat exchanger between coolant and cabin air. The internal combustion engine in most cars and trucks is cooled by antifreeze and water mixture that is circulated through the engine and radiator by a water pump to enable the radiator to give off engine heat into the atmosphere. Some of the coolants will pass through the heater core to give some engine heat to the cabin and adjust the temperature of the conditioned air