• lime!@feddit.nu
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    17 hours ago

    doing the math, tankless heaters use insane amounts of electricity. we were gonna use one for a detached guest house so we could skip the insulated pipe, but holy shit the cabling we’d have to install

    • HugeNerd@lemmy.ca
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      7 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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        4 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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          3 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.

    • DerisionConsulting@lemmy.ca
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      15 hours ago

      Depending where you live, the tankless heater might run on gas.

      Which is sometimes better for the environment than the electricity, if the grid is coal powered.