Rick's Free Auto Repair Advice

Posts Tagged: blend door actuator

What is a blend door?

Blend door and blend door actuator A blend door moves to vary the amount of air passing through the vehicle’s heater core. The blend door is controlled by a blend door actuator, which can be a cable or an electric motor. The blend door is also referred to by some car makers as an air mix door. Both terms mean the same thing. How cabin temperature control works in a car Here’s a diagram of a typical heating system in a vehicle. The Recirculation Door moves to allow outside air … Read More


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