When the weather is hot and humid, there is a greater chance for mold to grow in your apartment. Using the Air Conditioner will eliminate and reduce the chances of surface mold due to the high humid conditions. If you do not use the air conditioner and your apartment is humid and there is mold and mildew growth, then you should clean your walls and furniture with a mold mildew killer. Bleach is the best for removing and killing mold in the bathroom, however it is not advisable to use it on your furniture or carpeting. You can purchase products that are mold and mildew cleaners that are not harmful to furniture, clothing, and carpets.