‘Way to go’ Panasonic, for producing a bathroom fan that leaves even other Energy Star rated fans in the dust. Fan efficiency is measured in CFM or cubic feet per minute per watt, meaning those units that can move more air in a minute on a single watt are more efficient. Panasonic’s Whispergreen FV-08VKM1 model has raised the bar with a rating of 7.1 CFM/watt.

Panasonic has also taken care of backdrafts with a built-in damper and will warranty your unit for 6 years, compared to the typical 1, 3 or 5 year warranty on other fans.

Image Source: Panasonic

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