What Does A Ac Heater Blend Door Actuator Do

As of 2013 the air conditioning and heating systems in many automobiles share a lot of elements such as the duct work under the dash the control of temperature on the dash s face.

What does a ac heater blend door actuator do.

Directs the direction of air i e defroster dash vents floor vents etc. An actuator can become faulty if the plastic gear set turns out to be fragile and it breaks. A blend door actuator is linked to an air control door pivot found on the last drive of the unit. 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.

But if your car heater blows cold air and you ve checked both heater core hoses to make sure they re hot you likely have a bum blend door actuator. Sometimes the fix needs recalibration and sometimes you need to replace the part that is broken. There are a number of doors that direct the airflow of your hvac system. You can usually diagnose and fix the problem yourself in about an hour.

Directs the flow of the hot and cold air. When cool air is desired a blend door is closes so that no heat enters the passenger area. An actuator can go bad in of two ways. Hope y all enjoy this video and let me know what y all t.

In this video i explain how to replace the a c blend door actuator. A new door actuator costs less than 100. If you have air flow but it is not cold check the blend door for operation first. A blend door actuator controls the temperature and the flow of the air in a car.

With the combination of both systems the blend door actuator controls the conditioned air s temperature and leads it to the needed location. Blend doors move by way of a mechanical device referred to as an actuator. 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. First the electric motor can burn out rendering the unit non responsive so nothing changes when the temperature or.

A plastic gear set is frequently rotated from one side to another by the electric motor. And what causes them to mess up. Once the vehicle warms up the blend door may be moved to divert only part of the heated air into the cabin.