No cool. Customer states that the system can’t keep up with temperature demand. Checked mechanical and electrical components. Filter is clean. Blower motor capacitor is weak(15) recommend replacement. Evaporator coil is very rusty and likely to be leaking. Found system to be low on refrigerant due to evaporator coil leaking. Possible liquid line drier restriction as well. Recommend replacement of main electrical switch due to burning and pitting of contacts. Found weak dual capacitor on compressor, recommend replacement. Recommend adding compressor saver hard start kit to take a load off of the compressor. Due to age and cost of repairs I recommend upgrading to a newer and more efficient system at this time. System is operating but not well.