Yes, setting your water heater to 150°F (65°C) is excessively high and dangerous for residential use. At 150°F, water can cause severe third-degree burns and scald human skin in less than two seconds, posing extreme hazards to children and elderly occupants. Furthermore, higher operating temperatures accelerate scale buildup, increase standby energy losses, and place excessive thermal stress on the tank and plumbing fixtures. Verification: Adjust your thermostat dial down immediately to a safe, standard level of 120°F to 140°F.
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