VALEO 715295 Air conditioning evaporator

Description

Audi’s air conditioning system, the evaporator is another essential component, responsible for transforming the cool liquid refrigerant into the refreshing air you feel inside the cabin. Here’s a quick breakdown:

Function:

• The evaporator acts like a miniature radiator inside the car’s dashboard. The cooled liquid refrigerant from the condenser flows through the evaporator’s coils.
• A fan blows air from the cabin over the evaporator coils. As the warm air absorbs heat from the cold refrigerant, it cools down significantly.
• This cooled air is then circulated throughout the cabin by the ventilation system, providing you with comfortable and refreshing air.

Location:

• The evaporator is typically located behind the dashboard, hidden from view within the HVAC housing.

Construction:

• Made of aluminum or other lightweight materials for efficient heat transfer.
• Composed of thin fins and tubes to maximize surface area for better heat absorption from the air.
• Contains an expansion valve that controls the flow and pressure of the refrigerant.

Maintenance:

• The evaporator is generally a sealed unit and doesn’t require regular maintenance. However, a clogged or dirty evaporator can reduce airflow and cooling efficiency.
• Regular cabin air filter changes help prevent dust and debris from entering the evaporator, ensuring optimal performance.
• If you suspect a malfunctioning evaporator (e.g., reduced cooling, bad odor), professional diagnosis and repair might be necessary.