alt Hacker NewsThere's more to the video than just that. For example: you should run your hot water tap before turning on your dishwasher, and you should experiment with the dishwasher settings, because they can make a big difference.
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brewdad • 11/06/2025
I think one of his earlier videos suggested doing what I have always done. Load the dishwasher then do the hand washing. This ensures you have hot water ready to go since you’ve already been actively using it. When hand washing is done, run the dishwasher.
vasco • 11/06/2025
The whole point of getting a dishwasher is to not think about any of this though, for me.
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Running the hot water tap beforehand assumes that the dishwasher is hooked up to the hot water in the first place, which isn’t common everywhere.
Where I live this feature is called hot fill, I believe, and a lot of dishwashers don’t even support it. For those that do support its still generally not recommended to use it since the dishwasher now can’t do any rinsing with cold water, which is not only wasteful but I’ve heard the hot water can damage the water softener in your dishwasher.
But if you do hook it up to hot water (which is a lot more common in the US, I think) this makes a lot of sense.