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Pro tip about your home dishwasher: Run hot water out of your faucet until it’s extremely hot before starting your dishwasher. (Considering the faucet and dishw

Pro tip about your home dishwasher: Run hot water out of your faucet until it’s extremely hot before starting your dishwasher. (Considering the faucet and dishwasher use the same plumbing to pipe water in) The reason why is dishwashers line to do a rinse in the first cycle and for most people the water isn’t hot enough. So it fills up with lukewarm water and isn’t as effective. Another option is to have a hot water circulator installed so you always have instant hot water.

Macha 4y ago
Depends where you live, houses here usually have separate hot and cold water feeds and the dishwashers take only a cold input, relying on an internal heating element if they need hot water.
- nemo44x 4y ago
  Not according to Maytag: https://www.maytag.com/blog/kitchen/do-dishwashers-use-hot-water.html https://www.maytag.com/blog/kitchen/do-dishwashers-use-hot-w...
  - Macha 4y ago
    The world is bigger than the US, which was my point: https://www.diy.com/ideas-advice/how-to-plumb-in-a-washing-machine-dishwasher/CC_npcart_400224.art https://www.diy.com/ideas-advice/how-to-plumb-in-a-washing-m...
  - iso1631 4y ago
    https://www.bosch-home.com/mt/service/get-support/connecting-dishwasher https://www.bosch-home.com/mt/service/get-support/connecting... > Water temperature: cold water. > If water is warm: max. temperature 60°C.
maccard 4y ago
This assumes your dishwasher is hooked up to the hot water feed in the first place, most aren't. Most have a cold water intake and a heating element that heats it up internally to the correct temperature, so actually your tip is just wasting water (potentially hot water) for anyone who has a modern dishwasher.
- eru 4y ago
  It seems hot water feeds to your dishwasher are an American thing. Everyone else in the world has their dishwasher heat cold water.
- nemo44x 4y ago
  I thought it was the reverse today. They used to heat hot water but now rely on hot water I put due to energy efficiency requirements. They keep water warm but don’t really heat it.
  - maccard 4y ago
    My dishwasher only requires the water to be 30c, and combined with a longer wash cycle does an excellent job of cleaning the dishes. My hot water tank heats to 60c, so my dishwasher would still need a thermocouple and a heating element to mix it to 30c, as there's no guarantee that my hot water tank is actually full.
iso1631 4y ago
Every dishwasher I've owned has a cold water inlet and uses electricity to heat the water to the required temperature.
- nemo44x 4y ago
  Maytag says your wrong: https://www.maytag.com/blog/kitchen/do-dishwashers-use-hot-water.html https://www.maytag.com/blog/kitchen/do-dishwashers-use-hot-w... It they were installed wrong. The heating element just helps keep it warm. It won’t make it hot enough.
  - Tor3 4y ago
    That's an American thing. Not world-wide. As others have said, outside America the common way is to connect to cold water and use internal heating only.
    - iso1631 4y ago
      I wonder if it's because of the inability to draw significant power from an average American power outlet. See also the lack of kettles.
      - nemo44x 4y ago
        You can install a 240v outlet. Many people have them for certain appliances. but you wouldn't need that to heat water, silly. European dishwashers have to use cold water because of the way they dry the dishes. In America hot air is used to dry the dishes so we can hook up to hot water. In Europe you can't do that because of the Kyoto agreement. So you use condensation to dry your dishes by piping in cold water. There's not really much difference between them today. Because Europeans have very small homes by American standards (especially British people that live in sad, tiny, little things) the need for quiet dishwashers was also needed which means lower power. Also power costs more in Europe so more energy efficient appliances were needed so you didn't have food grinders, etc. But today it's almost all the same. But the Kyoto agreement forces Europeans to hook up to cold water and heat internally and not use a fan to dry but rather cold water.

Macha 4y ago

Depends where you live, houses here usually have separate hot and cold water feeds and the dishwashers take only a cold input, relying on an internal heating element if they need hot water.

nemo44x 4y ago
Not according to Maytag: https://www.maytag.com/blog/kitchen/do-dishwashers-use-hot-water.html https://www.maytag.com/blog/kitchen/do-dishwashers-use-hot-w...
- Macha 4y ago
  The world is bigger than the US, which was my point: https://www.diy.com/ideas-advice/how-to-plumb-in-a-washing-machine-dishwasher/CC_npcart_400224.art https://www.diy.com/ideas-advice/how-to-plumb-in-a-washing-m...
- iso1631 4y ago
  https://www.bosch-home.com/mt/service/get-support/connecting-dishwasher https://www.bosch-home.com/mt/service/get-support/connecting... > Water temperature: cold water. > If water is warm: max. temperature 60°C.

maccard 4y ago

This assumes your dishwasher is hooked up to the hot water feed in the first place, most aren't. Most have a cold water intake and a heating element that heats it up internally to the correct temperature, so actually your tip is just wasting water (potentially hot water) for anyone who has a modern dishwasher.

eru 4y ago
It seems hot water feeds to your dishwasher are an American thing. Everyone else in the world has their dishwasher heat cold water.
nemo44x 4y ago
I thought it was the reverse today. They used to heat hot water but now rely on hot water I put due to energy efficiency requirements. They keep water warm but don’t really heat it.
- maccard 4y ago
  My dishwasher only requires the water to be 30c, and combined with a longer wash cycle does an excellent job of cleaning the dishes. My hot water tank heats to 60c, so my dishwasher would still need a thermocouple and a heating element to mix it to 30c, as there's no guarantee that my hot water tank is actually full.

iso1631 4y ago

Every dishwasher I've owned has a cold water inlet and uses electricity to heat the water to the required temperature.

nemo44x 4y ago
Maytag says your wrong: https://www.maytag.com/blog/kitchen/do-dishwashers-use-hot-water.html https://www.maytag.com/blog/kitchen/do-dishwashers-use-hot-w... It they were installed wrong. The heating element just helps keep it warm. It won’t make it hot enough.
- Tor3 4y ago
  That's an American thing. Not world-wide. As others have said, outside America the common way is to connect to cold water and use internal heating only.
  - iso1631 4y ago
    I wonder if it's because of the inability to draw significant power from an average American power outlet. See also the lack of kettles.
    - nemo44x 4y ago
      You can install a 240v outlet. Many people have them for certain appliances. but you wouldn't need that to heat water, silly. European dishwashers have to use cold water because of the way they dry the dishes. In America hot air is used to dry the dishes so we can hook up to hot water. In Europe you can't do that because of the Kyoto agreement. So you use condensation to dry your dishes by piping in cold water. There's not really much difference between them today. Because Europeans have very small homes by American standards (especially British people that live in sad, tiny, little things) the need for quiet dishwashers was also needed which means lower power. Also power costs more in Europe so more energy efficient appliances were needed so you didn't have food grinders, etc. But today it's almost all the same. But the Kyoto agreement forces Europeans to hook up to cold water and heat internally and not use a fan to dry but rather cold water.