Whirlpool Duet 4.0 cu. ft. I.E.C. Front Load Washer with TumbleFresh Option, EcoBoost OptionGet additional energy efficiency without giving up cleaning performance. This option lowers water temperature and increases the tumbling action to use less energy while still delivering great cleaning and gentle performance. TumbleFresh OptionActivates after the load is finished and tumbles clothes periodically to help prevent wrinkles from setting in. Clothes stay fresh without having to transfer them to the dryer immediately. Quiet Spin TechnologyReduces noise and vibration by minimizing movement of the wash drum during spin cycles making installation on an upper floor possible.