The upstairs air conditioner went out earlier this month, when we still really needed it, so Husband called the big-name AC company that had "repaired" the machine a month earlier and set up an appointment for the following day, When the repairman came, he told us this trip was just diagnostic, then charged us big buck$. He came back the next day, charged us big buck$ again and told us that the condenser coil was shot, and that it would cost at least $2K to repair. However, he was doubtful if he could find a replacement coil because our unit was almost ten years old so he strongly advised us to get a new AC instead--approximately $4K on up.
Fio and Husband were aghast. A new AC had not figured into their retirement budget,
And Fio was also suspicious. So, Fio being Fio, she called a neighborhood friend for the name of her AC people, and the guy came out the same day. Funny thing--he said the only thing wrong with the AC was that two seals were loose, and he charged us moderate buck$. He asked if anyone else had worked on the AC recently and we told him about our experiences with the big-name company.
He didn't say anything, but did takes Husband outside to show him how easily the seals could be tightened or loosened--by hand.