So, my air was attempted to be repaired 3 times before I ever got the car and it wasn't fixed. I got the car and took it to my local dealer who replaced the o ring (?) and charged it up.
Now my air works but only if I am going 55 or faster. Most of our driving is in town going 35-45 MPH and the air is more like having the vents open with no air.
When going faster and the air is working it is not 'cold' in the rear and still seems like only the vents are open and the driver side does not get as cold as the passenger side.
Also, there is a hissing noise when the air is on. Not all the time but randomly.
Anyone else encountered this? Going in again tomorrow for its 5th repair.