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fix it man
fix it man, Master Technician
Category: Kia
Satisfied Customers: 17406
Experience:  ASE MASTER CERTIFIED, AA DEGREE AUTO/DIESEL
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My heater blows cool

Customer Question

My heater blows cool
Submitted: 1 year ago.
Category: Kia
Expert:  fix it man replied 1 year ago.

Hello, my name is Bobby. Thank you for the question. The most common cause of this is poor coolant flow from a restricted line or an clogged heater core. With the engine warm you need to see if both heater hoses are hot. If not then there is an issue with the core. If they are fine then you may have a blend door issue under the dash.