Car Air Conditioner Parts: The Evaporator

"Hi my name is Mark Delgado with American Auto Service for expert Village. Once in the evaporator coil it will obsorb the heat from the interior of the vehicle. Because the evaporator coil is deep inside the dash I just want to show an example of what it looks like. So the refrigerant comes into here in liquid form and as it comes in here under low pressure it removes the heat. Comes out as a gas on the other end which returns to the compressor to be compressed again. The cycle starts over. So that's the basic way that the airconditioner works.They have a couple of different control vices. This vehicle uses an expansion valve. Like a chevrolet or a lot of american cars use what's called an orfice tube. Which is inline which creates a restriction."