Use the NuTone 100 CFM White Exhaust Fan with Light and Heater to help prevent mildew in rooms up to 100 sq. ft. The fan offers 4 functions: fan-forced heat, ventilation, bright light and nighttime light. The fan comes with a wall switch with on/off switches for all 4 functions. Use a 100-watt light bulb and a 7-watt bulb for primary and ...