Air Temperature Control Blend Door Actuator

The temperature door diverts air over the evaporator for cool air or points the flow over the heater core for warm air.

Air temperature control blend door actuator.

A c heater ac heat air vent door blend actuator for chevy pu pickup gmc truck. Carmakers have used this basic design for 100 years. As of 2012 the heating and air conditioning systems in most vehicles share many parts including the temperature control on the face of the dashboard and the duct work behind the dashboard. With both systems being combined actuator controlled blend doors regulate the temperature of the conditioned air and route it to its desired location.

These small electric motors control the flow and blend of hot and cold air to the passenger areas by opening and closing the vent. The blend door diverts the airflow to the defroster vents in the upper dashboard the floor discharge for heat or the center vents for air conditioning. It is controlled by a blend door actuator which is a small electric motor. Hvac ac heat defrost front air temp control blend door actuator motor for chevy.

Consult the repair manual to identify which actuators control the defrost vent floor mode door and the temperature regulating blend door then peer under the dash and locate the suspect actuator on the heater box. When you turn the knob on your dash to the desired temperature the actuator moves the blend door to achieve the proper mix. Dorman a c heater blend door actuator 604 111. Have a friend switch between modes or temperatures while you watch the actuator.

A blend door actuator receives input from the climate control system and and changes the blend of hot cold air entering the vehicles cabin. With manual temperature control. 22 05 4 95 shipping. Air door actuator replaces 15 73952 52495593 89018374 604 112 compatible with chevy gmc cadillac hummer 2003 2014 models hvac blend control actuator air heater blend door 4 6 out of 5 stars 348.

First the electric motor can burn out rendering the unit non responsive so nothing changes when the temperature or vent mode controls are moved. The blend door or vent door mixes warm and cool air to be sent to your vents. It can take input directly from the climate control switches or if your vehicle has a sophisticated system it can be adjusted by the computer to maintain a constant temperature. An actuator can go bad in of two ways.

Autozone has the right blend door actuator for your car s ac. Check if this part fits your vehicle. 21 95 4 95 shipping.