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dishwasher drain in old house

I live in a 1952 pier and beam house that has never had a real dishwasher. I have a space for it but there is no place for the plumbing to go except under the floor. My plumber has said the incoming water is not a problem but the drain line needs to go down and then back up again. He said that the average dishwasher pump will not last long doing this. So I wonder if anyone has used an external pump to assist this or knows of another solution.

Re: dishwasher drain in old house

How far down will it have to go and how far is it to the kitchen sink?

Re: dishwasher drain in old house

Normally a dishwasher would drain into a garbage disposer (via an air gap).

If the space for your dishwasher is pretty far from the sink, so far that the discharge hose won't reach, you can install an extension hose. Run it behind the cabinets.

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