• Rivalarrival@lemmy.today
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    11 months ago

    No.

    The reason your dishwashers use cold water is because your hot water supply is not presumed to be potable water.

    EU regulations allows for gravity-fed hot water tanks in certain jurisdictions, open to atmospheric pressure, and thus possible contamination. They did this to prevent the possibility of exploding boilers.

    Since the building’s hot water supply is presumed unsafe, dishwashers are required to use the safe, cold water supply to generate their own safe, hot water.

    US regulations do not allow hot water to be held at atmospheric pressure. We use T&P valves to limit boiler pressures and prevent explosions. Our hot water is not exposed to environmental contaminants, and is presumed potable.

      • Rivalarrival@lemmy.today
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        11 months ago

        It may be 50 years out of date now. It wasn’t 50 years out of date when dishwashers became common and the standards were established.