Well I never really had decent cold air, didnt seem to hold it but had the pressure. When the AC Compressor is running it makes ALOT of noise, this with the A/C on or the heater on. Is it suppose to run while the heater is going? I dont want it going out on me with winter being right down the street. thanks guys n gals

 

The A/C should be engaged for A/C or Defrost operation only, maybe for Bi-Level (floor and defrost) but not sure on that. Vent and Heat should not have the compressor on.

Does the compressor kick off when the climate control is Off? Not sure whether you have a controls problem with the head unit, or the compressor clutch is seized (rare).

The compressor making a lot of noise is a concern, maybe related to your Heat issue, maybe a completely different opportunity to excel.