Yes, 120°F (49°C) is the industry standard and recommended temperature setting for residential water heaters established by the U.S. Department of Energy and safety organizations. This temperature is sufficiently hot for everyday domestic needs like dishwashing, laundry, and bathing, while significantly reducing energy consumption and preventing severe scalding risks, particularly for children and elderly individuals. However, households with immunocompromised members sometimes prefer 140°F to inhibit bacteria. Verification: Measure hot water output at a nearby tap using a digital thermometer.
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