About a year ago my A/C died completely, it would blow air, but it was warm. I took it to a shop and it turned out to be a busted hose and of course no more coolant. Now I have another problem. Every time I drive it goes through a cycle.....Blows cold for about 2 minutes, then blows warm for about 10 minutes, then sometimes gets cold again, but not always.

What could this be? I have a squeaking belt, but I'm not sure which one, could it be slipping? Or does it just need recharged? But if it just needs coolant, it probably means theres a leak somewhere right? Since it was refilled just a year ago.