My CAC unit isn't working properly. It's blowing warm air at times. Yesterday evening I went out and noticed the fan turning very slowly. Also, it doesn't sound right.
My CAC service came out today. They believe I need a new condenser fan motor or upgrade. I was told a new one could cost $500. They also said my unit is very old and could not guarantee after installing a new condenser fan motor that the condenser itself would not go bad.

I was told to consider an entire new unit which could cost $1500 to $2000. I have an old York Stellar Plus, H1CH024 thru H1CH048 Hermetic Compressor, Split-System Cooling 2 to 4 ton.
Any suggestions?