this post was submitted on 22 Nov 2023
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My air to water heater operates at 4.3:1 efficiency and heats to 60°. It stores it and loses 1° a day. The dishwasher would need to heat the water just 10° more given the tank is in daily usage.
Otherwise the dishwasher would have to do it on in a faster timeframe. This is why electric power showers are more expensive to run than mains showers, they have to heat quicker which takes more energy.
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
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
ya, but you have energy productions other than coal