Air conditioner vents can be breeding grounds for black mold.
Black mold in my window air conditioner.
You may also be able to see the presence of mold around drip pans air ducts and within intake vents.
Condensation forms in the coils and ducts as cool air circulates through the system creating a habitat for moisture loving mold.
Allow the solution to sit on these surfaces for approximately 10 minutes then rinse with water and a damp cloth.
Let the unit filter grille and metal cover dry completely.
Using a cloth brush or sponge soak up the solution and scrub the moldy areas of your air conditioner well.
Reassemble the air conditioning unit and plug it back into its power source.
If upon your initial inspection you discover rampant mold and mildew in the air conditioner do not attempt to clean it.