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Heating AC and Engine Cooling
Chevy Cheyenne
Jeep Grand Cherokee Limited
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Why is only warm or cold air blowing when the heat is all the way on?


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Wiki User
2005-01-29 05:00:10
2005-01-29 05:00:10

Thermostat stuck in the open position or heater core clogged. Replace the thermostat and see where you stand. This would also be a good time to replace any coolant hose that needs replacing and to flush the cooling system and change the coolant. Could also need to change your radiator cap

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Heat can usually be considered as the energy of motion of atoms and molecules. Heat can flow spontaneously only from warm to cold. Heat can be made to go in the other direction, but only by doing work. So, the simple answer is: from warm to cold.

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it is a heater. heat. it blows heat. warm air

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That is exactly how a heat pump works in heating mode are you sure it's not a heat pump?

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Heat does, indeed, go from a warm source to a cold place. That is what heat always does.


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