Turns out the hub and pulley on the front of the A/C compressor somehow came apart and cut the high pressure hose coming out of the compressor spraying freon 12 all over the place. The noise was the sound of things rubbing on the hose. Unfortunately, that hose is pretty expensive and the labor is too but I don’t want to (can’t?) do it myself because it takes some special tools like a vacuum pump, etc.  Jared is going to recharge the system with Freon-12 again. That is the stuff that is now outlawed – using existing freon is OK – and he won’t talk about using Duracool because it is not legal in Arizona (yet). Duracool is a freon replacement that is made from petroleum-based gas and is legal in most states, including California, but not Arizona for some reason.