Whirlpool Duet Clothes Washers and Dryers offer a beneficial feature called FanFresh. This feature solves a common problem in front load washers where wet clothing not removed immediately develops an odor in the clothing and the washing machine tub. Also, in extreme situations bacteria can develop. Fan Fresh uses a fan to circulate and ventilate air in the washer following the completion of the wash cycle. Check out this video to see how it works in detail and visit http://www.karlsappliance.com/by-brand/whirl/Whirlpool.html for further features, specifications, and images of Whirlpool home appliances.