A shower scald setting can usually be changed when the shower valve includes a temperature limit stop or a thermostatic control. This setting is designed to cap the hottest output and reduce burn risk during use. That function matters because hot tap water remains a serious safety issue. U.S. safety data notes that water at 120°F can still cause third-degree burns with long exposure, while 130°F and 140°F can injure much faster.
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2026-04-13