Functional Description - A/C Evaporator

The A/C evaporator is used to absorb heat, remove humidity from the air and distribute the cool air using the blower motor fan. Refrigerant enters the A/C evaporator from the A/C expansion valve as a low temperature, low pressure mixture of liquid and gas. As air flows over the fins of the A/C evaporator, the humidity in the air condenses on the fins, and the heat from the air is absorbed by the refrigerant. Heat absorption causes the refrigerant to boil and vaporize. The refrigerant becomes a low pressure gas when it leaves the A/C evaporator.