HVAC Mode Door Actuators

The HVAC mode door actuator is an essential component that controls which vent air travels through.

HVAC mode door actuator function

The mode door actuator has two positions which are closed and open. Nowadays, actuators are managed electronically and control which vents have airflow through them. Airflow can come from the panel, front, defroster, or all of them combined. The mode door actuator must be kept in good working order to maintain the proper airflow through the vehicle.

Common problems with a faulty HVAC mode door actuator

A defective HVAC mode door actuator can lead to irregular airflow, abnormal clicking noises, or wrong temperature settings.