Use the NuTone® 110 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 nighttime lighting (bulbs not included). The motor operates at a sound level of 4.0 sones.