We called Aire Serv for a second opinion after another company (Linc Service) told us the compressor needed to be replaced. The Aire Serv tech found that the "unit had been sabotaged." Wires were disconnected or improperly connected and any knowledgeable tech would have known this. He re-connected the wires and we were back in business!
It's refreshing to find an honest service company! We recommend Aire Serv.