My ac started blowing hot air or ambient temp air so i started looking for an indication of a leak cant find anyting engine compartment is always disty hazards of my job. I started smelling a musky smell when the air started blowing so now I'm assuming its the refrigerant. Any ideaas as to where I could continue to look that might be causing the freon to leak into the vents. And ive seen where the leak sealer screws up the compressor any ideas or opinions would be appreciated

 

Probably the evaporator core. Had to have mine replaced about 6 months ago.

 

now that the colder weather is setting in I am realizing I do not have a heater either would this affect the A/C and the Heat or would it be a different issue anyone have
an idea or resolution also I have a mechanic in the area advertising for work what would be the book hours for this repair to see if he knows his stuff