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Under Sink Hookup vs. Dedicated Drain Line: Which Is Better for Dishwashers?

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Posts: 14
(@joseph_paws)
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Honestly, you nailed it—under-sink hookups are fine as long as you treat that space with respect. I’ve seen tenants turn the cabinet into a mini hardware store, and it’s always the hoses or wiring that pay the price. One time, someone shoved a big bag of cat litter under there and managed to kink the drain line so bad it backed up into the dishwasher. Took ages to sort out.

If your plumbing’s already quirky, tearing things up for a dedicated line can open a whole can of worms (and cost way more than you’d think). I usually tell folks: if you’re careful and keep that area clear, the standard setup is just fine. Maybe toss in a little wire rack or divider to keep stuff from shifting around.

It’s all about risk vs. reward, like you said. Not every kitchen needs a fancy upgrade—sometimes simple really is better, especially in older homes where “just one more project” turns into three.


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drones245
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(@drones245)
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Yeah, I hear you on the “just one more project” turning into a weekend of swearing at pipes. Honestly, unless the under-sink setup is a total mess or you’re doing a kitchen reno anyway, I’d stick with what works. My last place had a dedicated line and it was always something—leaks, weird noises, you name it. Sometimes simpler really is less headache. Just gotta keep the junk from piling up under there… easier said than done.


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robert_maverick
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(@robert_maverick)
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Sometimes simpler really is less headache.

I tend to agree, especially if your current setup isn’t causing issues. I’ve seen dedicated lines get clogged or vibrate like crazy—sometimes the “upgrade” just means more stuff to maintain. Unless you’re already gutting the kitchen, I’d leave it be.


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Posts: 4
(@vegan364)
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Unless you’re already gutting the kitchen, I’d leave it be.

That’s pretty much where I land too. I’ve looked into dedicated lines, but the extra cost and potential for leaks or clogs kind of defeats the purpose for me. The under-sink hookup works fine, and if something goes wrong, it’s usually easier (and cheaper) to fix. Unless there’s a major problem, I’d rather not add another thing that might break down the line.


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Posts: 4
(@lauries24)
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I hear you on not wanting to add more potential headaches. I had a plumber try to talk me into a dedicated line last year, but honestly, my under-sink setup has been trucking along for ages without any drama. If it ain’t broke… well, you know the rest. I’d rather deal with a simple clog than tear up cabinets chasing leaks.


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