Hot water Vs cold water feed for dishwashers?

[vincentianpinner]

Just wondered if one is better than the other.
We've narrowed it down to 2 dishwashers and one - the Kenwood one wants cold and a hisense one wants hot water feed apparently. The two companies claim there's good reason for this but I suspect there might be a drawback somewhere?

 

[yorksbuilder]

At least 80% of them use cold water feed in the UK... they use such a small amount of water its not worth using your hot water, and having part of it sitting in your pipes from the boiler/cylinder, wasted

 

[foxhole]

So both are cold feed ? What’s the problem ?

 

[vincentianpinner]

So both are cold feed ? What’s the problem ?

If you look carefully you will see very clearly that one says hot and the other days cold. And I definitely didn't edit it because I wrote cold twice .

 

[foxhole]

If you look carefully you will see very clearly that one says hot and the other days cold. And I definitely didn't edit it because I wrote cold twice .

Except your post shows it was edited .Dishwasher does not need hot water feed to rinse so waste of time buying one , it also needs specific temp for different wash types which may mean the incoming water may be too hot leading to longer wash time as it waits for water to cool.

 

[Why Not Indeed]

You sure it's hot-only? Last time I looked at this, all the hot-fill dishwashers were actually hot or cold.

 

[cdbe]

My Miele is hot feed (though obviously still has a heater if you want to connect to cold). It's full of all sorts of fancy stuff and I believe it does things like extracts any excess heat from the water to use in the drying cycle etc. We have an unvented cylinder with a direct pipe to the dishwasher so it actually gets hot water not cold like a combi while it ramps up.

I did try to monitor electricity consumption as the machine can be set to display it in kw but it only shows full kw so not sufficiently accurate.

I can see no reason the makers would want to make their products use more energy (and sell less replacement heater elements).