The answer to 'what does AC do' is that an air conditioning (AC) system helps cool and dehumidify the air in your home. AC systems work by removing heat and moisture from the indoor air and transferring it outside, leaving your home feeling cool, comfortable, and less humid.
AC systems use a refrigerant to absorb heat from the indoor air and release it outside. They also have a fan to circulate the cooled air back into your home. This process helps maintain a consistent, comfortable temperature and humidity level, even on the hottest days.