The “Steam” option will add steam to the wash portion of the cycle. This adds several benefits:
1. Steam produces more heat and motion energy than water and steam molecules are smaller than water molecules, so the overall wash performance is enhanced.
2. The bonding capability to a stain is greater, so stain removal can be enhanced as well, whereas the stain option only adds more time to the wash.
3. Another reason for steam is that on the non-sanitary cycles, steam adds sanitizing benefits without the energy consumption. And… steam uses a little less water. How much will vary from depending on load size. This option is not available on all cycles.