The best bathroom fan must have a low noise level, good air flow capacity, proper venting and additional features such as heaters and automated timers. There is a wide range of bathroom ventilation fans available, so choosing the best one takes into account a combination of features, price and quality.
When shopping for a bathroom fan, a homeowner needs to choose one with a rating of 0.5 to 1.2 sones or 1.5 to 2.0 sones. Fans with these ratings are quiet. All fans have airflow capacity rating measured in cubic feet per minute (CFM). The buyer needs to know the size of the bathroom to choose the right airflow capacity.