Today we completed a VW Golf MK4 Evaporator Box Replacement
This VW Golf MK4 came into us because the air conditioning wasn’t working. After pressure testing the system and inspecting for leaks we discovered the whole Evaporator needed replacing. You can even see the UV dye visible where the leak was detected in the photos below.
The evaporator is another device that looks similar to a car radiator. It has tubes and fins and is usually mounted inside the passenger compartment behind the fascia above the footwell. As the cold low-pressure refrigerant is passed into the evaporator, it vaporises and absorbs heat from the air in the passenger compartment. The blower fan inside the passenger compartment pushes air over the outside of the evaporator, so cold air is circulated inside the car. On the ‘air-side’ of the evaporator, the moisture in the air is reduced, and the ‘condensate’ is collected and drained away.
Your car air conditioning system is made up of lots of loads of working parts like
- Receiver Drier
- Expansion Valve
- Cabin Filter
Once we replaced the necessary parts we completed an AC Service which includes a re-gas with R134A gas and UV dye. Now the VW Golf MK4 has icy cold air conditioning.