Dry Mode: Use Dry Mode when the weather is hot and humid, such as during the monsoon. On remote controllers, every Room Air Conditioner Any device that can change the temperature, humidity or general quality of the air. More specifically, an air conditioner makes your home cooler, by drawing heat energy out of the house and transferring that heat to the outdoors " data-gt-translate-attributes="[{"attribute":"data-cmtooltip", "format":"html"}]">Air Conditioner (RAC) device has a dry mode. Filters that are dirty produce condensation in the interior unit AC, which promotes the growth of fungi like mold.