The A/C evaporator (1) is located within the HVAC housing, behind the instrument panel. The A/C evaporator and insulator (2) are positioned in the HVAC housing so that all air entering the housing must pass over the evaporator fins before it is distributed through the heating-A/C system ducts and outlets. However, air passing over the evaporator fins will only be conditioned when the A/C compressor is engaged and circulating refrigerant through the A/C evaporator.The A/C evaporator tubes (4) are connected and sealed to the A/C expansion valve by use of rubber O-rings and a tapping block (3).The A/C evaporator can only be serviced by removing and disassembling the HVAC housing.