I need some help on fixing or suggestion to this problem... my air conditioner just doesn't go on anymore. I had it fixed twice. The second time we got a new unit in there, so it should be fine. We came back from a two week vacation and our car wouldn't start. When we got it started, the air wouldn't go on. We had a friend look at it and he said he has no idea why it isn't working, it's brand new! This was a year ago and we still need to fix it. I don't trust the places we have been going to get an estimate, they are all different. Some say we need a new unit! Can you believe it? Help would be greatly appreciated and desperately needed!