What Does a Steam Feature on a Washer Do? The Spruce
Prewash phase: While the water loads into the wash tub, the steam works with the water to help soak the fabrics more thoroughly.; During the washing phase: If added while the detergent is mixed with the water, the steam increases the temperature of the wash tub to improve the cleaning power, which also helps to activate the detergent. It does this by dissolving the detergent more effectively ...