Compressor badly overheated, unable to operate at present. Noted appearance of oil at base of accumulator, confirmed leak with electronic detector. Noted only 100 psi on gages = system nearly out of refrigerant. Noted aluminum in condenser coil is badly deteriorated = BTU/HR & effiency diminished greatly. Noted most all flex duct is older gray type and is heat shredded. System is 22 yrs old, no repairs to be reccomended Quoting new system and ducting. Ducting add on is 1800.00