• orrk@lemmy.world
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    1 year ago

    fundamentally, water takes the same amount of energy to heat up, no mater the time frame, most commonly the “mains showers” are cheaper to heat because many run on some combustible

    • Squizzy@lemmy.world
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      1 year ago

      Yes but we are not heating water with 100% efficiency. So it’s not the same, it is cheaper and more energy efficient for me to use my air to water heater to heat water and store it than it is to burn coal to generate electricity to heat an element to bring water to the same temperature