Temperature Lever

This lever operates the temperature door which controls the temperature of the discharged air by regulating the ratio of heated-to-unheated air. In the "COLD" position, airflow from the heater core is completely blocked. As the lever is moved toward "HOT", the temperature door opens, admitting heated air into the ducting and proportionately blocking off the unheated air. When the lever is fully in the "HOT" position, the flow of unheated air is completely blocked and all air passes through the heater core.