Originally Posted by
zephyr17
4. The "temperature" control only controls the electric floor heat, when it controls anything. My experience is it only does anything about 50% if the time. Cooling is provided by the car's HVAC system through the vent in the ceiling over the door. The amount of airflow can be controlled by louvers if they're not broken.
The Zephyr is a tricky one since it can pass through a variety of climates. Good attendants will regularly tweak the overall HVAC controls for the car. But if you notice it's cold despite closing your overhead vent and turning up the heat dial, or warm and stuffy despite opening the vent and turning down the dial (and opening your door to allow fresh air in from the hall), don't be shy to ask the attendant to make an adjustment.