Technician A says that the HVAC doors in an automatic system may be vacuum operated. Technician B says that the HVAC doors in an automatic system may be operated by electric servos. Which technician is correct?

Question

Quizplus · Accepted Answer

Both vacuum-operated and electric servo-operated mechanisms are used in automatic HVAC systems to control the movement of doors that direct airflow within the system.

Technician a Says That the HVAC Doors in an Automatic