ᐅ Connecting the dishwasher to the hot water supply—does it make sense?
Created on: 23 May 2019 12:26
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Golfi90
Hello everyone!
According to the description, the Miele dishwasher we are getting can be connected to the hot water supply.
Since our KFW55 new build already includes a solar system with a 400-liter (106-gallon) hot water tank, and there are only two people in our household, I wanted to ask if it makes sense from an energy cost perspective to connect the dishwasher to the hot water supply and what your experiences are with this.
Thank you very much!
According to the description, the Miele dishwasher we are getting can be connected to the hot water supply.
Since our KFW55 new build already includes a solar system with a 400-liter (106-gallon) hot water tank, and there are only two people in our household, I wanted to ask if it makes sense from an energy cost perspective to connect the dishwasher to the hot water supply and what your experiences are with this.
Thank you very much!
B
boxandroof23 May 2019 17:02I agree, it’s a controversial topic.
Especially regarding the washing machine (which wasn’t the question here), I wouldn’t do it either. The small amount of electricity used by the washing machine doesn’t really cost anything.
For the dishwasher, the electricity consumption is higher, especially compared to the water usage. In my opinion, it makes sense to do it there, particularly if there are no extra costs involved as is the case here. However, spending money on it doesn’t make much sense. In the end, the effect is not significant.
Enzymes... I think they are more relevant for the washing machine, where washing is done at very low temperatures.
Especially regarding the washing machine (which wasn’t the question here), I wouldn’t do it either. The small amount of electricity used by the washing machine doesn’t really cost anything.
For the dishwasher, the electricity consumption is higher, especially compared to the water usage. In my opinion, it makes sense to do it there, particularly if there are no extra costs involved as is the case here. However, spending money on it doesn’t make much sense. In the end, the effect is not significant.
Enzymes... I think they are more relevant for the washing machine, where washing is done at very low temperatures.
The additional costs to connect the machine to the hot water system are approximately €0. The problem is more that with solar thermal systems, the hot water temperature will likely reach 70°C (158°F) or higher – which is simply too much. At temperatures below 60°C (140°F), there is no issue, but the saving effect is minimal.
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