After having a HVAC repair man look at the PTAC unit for $144 and not calling me back with a estimated cost for repair, as promised, I decided to go on line for a parts search. The repair man said I needed a new condenser, fan motor and fan blade. True, the fan blade was broken but I already knew the unit would cool so the condenser was good and the fan motor turned the broken fan blade. I found the fan blade on the Appliance Parts Pros web site after an extensive search on the web and the fan blade was 42% less expensive than any other I had found. I placed my order and the fan was delivered the next day. I had the unit repaired and operating properly before dinner.
I wish I had known about Appliance Parts Pros years ago.