The A/C evaporator cools, drys and cleans the air that enters the passenger compartment. The A/C evaporator case is insulated in order to prevent sweating.

The following series of actions occurs in the A/C evaporator:

1. Refrigerant enters the A/C evaporator as a low pressure liquid.
2. The liquid boils (vaporizes) at this low pressure.
3. The liquid absorbs heat.

The heat comes from the warmer outside air that passes through the A/C evaporator fins.

4. The air that will be directed into the passenger compartment is cooled.
5. As the heat is transferred to the A/C evaporator, moisture from the air condenses the surface of the evaporator.
6. The moisture drains off.

The moisture carries dust and pollen as it drains.

A water drain port is located in the bottom of the housing.

The temperature of the A/C evaporator must be high enough so that the water collecting on the surface will not freeze. Frozen water on the surface may restrict the passage of air.

The following components control the temperature along with the A/C evaporator:

The A/C evaporator is located in the heater module, underneath and behind the instrument panel.