• HugeNerd@lemmy.ca
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    12 hours ago

    Heating the same amount of water to the same temperature requires the same amount of energy.

    • lime!@feddit.nu
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      9 hours ago

      yes, but not the same amount of electricity. without a tank there’s no heat storage to take energy from.

      • HugeNerd@lemmy.ca
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        8 hours ago

        And this energy, it came from… you rubbing your hands together? The tank will take more as the hot water sitting there is constantly cooling. It will take a system that can supply more instantaneous current, sure, like my humble cardboard shack doesn’t have the electrical to really work well with a tankless heater.