Symptom: Had an 80* OAT day and turned on AC. 83* inside. Inside set at 77*. While vent air seemed reasonably cool, took 1-3 hours to drop to 80* inside. Hours later, dropped to 79* inside.
Gas Furnace: 92.2 AFUE York/Unitary P3URC14N09501D
Coil: York/Unitary G1UA036S21C R22 or R410A option but don't know which is being used
Compressor: Goodman CKJ30-1A
Don't know furnace/coil age but booklets for furnace/coil are copyright 1999-2000. Service guy says compressor is from 2000, but I did not see on label (I wasn't present for service call).
Service guy told wife 2-ton compressor worn out from age. $$$$ to replace but no specifics on brand/model.
Question-do I need a new compressor? If so, do I replace compressor or start with a new system from scratch (say a heat pump). Thank you for any help.