> I was told at 2 stores not to buy plumbed version because if you run
into a problem with the waterline, then you have a major repair to the
kitchen wall to deal with.
That IMO is odd advice. Yes, it's true, but it's also true about for a refrigerator that makes ice or dispenses drinking water. And it's also true for washing machines if you have them in any room of your house.
It's one more example of don't take design advice from your average appliance sales person. Instead, get a good plumber and tell him what you need, a water and drain line for an oven, he'll know what to do, a shutoff valve that is accessible, and an indirect drain, (details in Miele's installation specifications).
Ask these appliance stores/people why the same argument doesn't apply to dishwashers, would they recommend you not install one for the same reason? They in all likelihood don't stock plumbed versions of CSOs (special order, less commission, more effort), their installers don't regularly (or ever) install plumbed (even less commission, more headache) and they don't want to deal with it (just buy one we have in stock and don't bother us anymore).
Do you turn your whole-house water supply valve off when you are away for a weekend or for a vacation (something marked main shutoff valve)? It's peace of mind for the situations your appliance sales guys warned about, ask any plumber if they themselves do this, I'll guess 8 out of 10 do.
I wish I would remember to do it 8 out of 10 times when I'm away.
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