I hate getting my AC worked on or anything else for that matter, because finding a trustworthy repairman is hard. Last Fall we had one trying to tell us that it probably needed a compressor or something, and that he would have to come back another day to run more tests on it. I told my wife that since it was freezing up at night and not getting all that cold, that it probably just needed freon. Well we decided to wait until Spring to get it fixed(didn't really need it fixed in late Fall) and decided to go with another company this time. Low and behold, he comes out and says it's just needs 2 pounds of freon, and it's worked better than ever since.