How do you get rid of that moldy, musty smell the a/c system sometimes gets?

check cab filter or clean condensor

How do you get rid of that moldy, musty smell the a/c system sometimes gets?
At a dealership where I once worked, we put a tablespoon full of Drano in the heater box. Would remove the blower resistor and drop it in. Worked well.
Reply:use air freshener or clean it once in a while
Reply:CLOSE IS THE DRAIN ON THE BOTTOM OF THE EVAPORATOR BOX OPEN IF NOT THEIRS THE PROBLEM WATER SITTING IN THE BOX THEREFOR THE FAN IS BLOWING ACROSS THE NASTY THING COVERED IN STAGNATE WATER