What advantages do you get by increasing water temp on dual thermostat water heater?

  • It's a trade-off: hotter water is better for washing, particularly dish washers, but is dangerous (accidental scalds), shortens the heater life and costs more. Jan 10, 2019 at 1:50
  • is this a question about dual thermostat water heater or is it about any water heater?
    – jsotola
    Jan 10, 2019 at 5:46

1 Answer 1


Advantage: you keep Legionella bacteria from harming your family.

Disadvantage: risk of scalding at any temperature that will kill Legionella

Go with automatic anti-scald blending faucets, and you get the best of both worlds and longer showers too.

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