1 Sone Bathroom Fan. Tech drive bathroom fan 50 cfm, 1.0sone dc motor with no attic access needed installation,very quiet ventilation and exhaust fan, ceiling mounted fan, white. While the sone measures the loudness of the vent fan, cfm measures the fan speed or power.
Whisper quiet(under 1.5 sones) sone (24). The bath vent fan cfm capacity should be slightly more than the number of square feet of floor of the bathroom area being vented. Check with your local state or county government to determine if you need additionally, fans measure the amount of noise they make in sones.
Nutone lpn80 loprofile energy star bathroom fan 80 cfm, 1.1 sone.
A bathroom fan will remove this excess moisture from the air and vent it to the outside. Bathroom fans are essential for removing moisture and bad odors from the bathrooms in your home, thus preventing the growth of mold and mildew. Some bathroom fans can be as low as 0.3 sones. Getting the right size of your bathroom fan is no brainer.