Hay all my wifes dodge has a moldy smell that comes out the dash air vent when she turns the air cond or the heater on. What would be the best way to get rid off the mold in the vents and heater core?
Einsatz Klimapflege or other type cleaners that are designed to clean the coils. Does the car have a cabin filter? If so, I would look for that first and replace it
You can use these nice smelly products or just follow the above steps with a can of Lysol Spray Disinfectant in your favorite scent & it will work just as well.
AC drain then use your steamer down the vents and finally the ozone generator. If that doesn't work you may have to take the plenum apart and clean with something like spray nine that kills bacteria. Worst case scenario if you have to take it apart.