Heater Door Actuator

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Heater door actuator.

It is controlled by a blend door actuator which is a small electric motor. A new door actuator costs less than 100. This actuator then moves temperature and air direction doors inside the heater plenum box which are designed to control mode settings such as temperature floor mid vent defrost and fresh air or re circulation modes. You can usually diagnose and fix the problem yourself in about an hour.

They also control hot and cold settings for right and left passenger compartments. Also called hvac actuators these small electric motors control the flow and blend of hot and cold air to the passenger areas by opening and closing the vent doors that let the air through. And what causes them to mess up. Air door actuator replaces 89018365 604 106 52402588 compatible with chevrolet chevy gmc 1994 2012 silverado 1500 and 2500 tahoe sierra hvac blend control actuator heater blend door 4 5 out of 5 stars 921.

The blend door or vent door mixes warm and cool air to be sent to your vents. When you turn the knob on your dash to the desired temperature the actuator moves the blend door to achieve the proper mix. If your car or truck passengers don t seem to be getting all the benefits of your vehicle s heating or a c system you could have a non working a c heater blend door actuator. Find the procedure in a shop manual at auto parts stores for about 20.

An actuator moves the blend door automatically when the temperature control is moved. In this video i explain how to replace the a c blend door actuator.