Why does a dishwasher have to drain through the sink plumbing?

• <div><p>Any drain in your house requires a water trap to prevent sewer gases from entering the home. Dishwashers don’t have an internal water trap, so they must use an external P trap. The most convenient P trap for the dishwasher is already in the plumbing under your sink.</p></div>

What is the standard size of a dishwasher?

• <div><p>A standard <a href="https://www.angi.com/articles/dishwasher-sizes.htm">dishwasher size</a> is 24-by-24-by-35-inch for a built-in unit. The depth and height line up perfectly with most kitchen countertops and cabinet sizes. </p></div>

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TRUSTED BY HUDSON, WI HOMEOWNERS

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Verified Reviews for Dishwasher Installation pros in Hudson, WI

*The Angi rating for Dishwasher Installation companies in Hudson, WI is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Dishwasher Installation needs.

*The HomeAdvisor rating for Dishwasher Installation companies in Hudson, WI is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Dishwasher Installation needs.

Last update on June 17, 2026

Reviewed in June 2026
We hired Watson to look at our dishwasher and it ended up that mice had eaten the electrical. This was the home we had just purchased. He told us it would be cheaper to purchase a new dishwasher versus fixing the electrical which seemed reasonable. We purchased a new dishwasher from Warner...
Watson's Appliance Parts & Service
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Reviewed in December 2025
Love the look of our new kitchen cabinets. We replaced 47 doors and drawers in our kitchen and installed three new cupboards in the laundry. Price was competitive and quality was excellent. The installer, John, did terrific work in aligning the doors/drawers as our house is old and the...
Croixside Home Improvements
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Reviewed in June 2023
They were very quick to respond. There was a disconnect between my sales rep and installer. However, my installer handled it seamlessly and to my benefit.
LeafFilter Gutter Protection
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Reviewed in January 2023
Installer than an excellent job!
Renewal By Andersen
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Reviewed in October 2022
Was a cleaning; not an install, but Ron was great! Very nice guy.
Hero Plumbing Heating and Cooling
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Reviewed in June 2022
Very professional company including installers! Will call them again to remodel kitchen. Quality windows, quality work.
River Valley Floor Shield
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Reviewed in January 2022
My installer Maddie was excellent and the customer service as well
Green Oasis
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Reviewed in January 2022
We have used Prestige for many things from furnace help to dishwasher repair and each time we are blown away by the speed, quality of work, and professionalism. Prestige is our first and last call when needing anything fixed.
Prestige Mechanical
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Reviewed in May 2021
Great professional installers. Would recommend highly. Thank you
Hoffman Cooling and Heating
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Top-Rated Dishwasher installation pros in Hudson - Updated Nov 2026

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Dishwasher Installation FAQs, answered by experts

Repairs typically cost between $150 and $600, depending on the issue, parts needed, and labor charges.

Most repairs take 1-3 hours, but complex issues requiring part replacements may take longer if parts need to be ordered.

Any drain in your house requires a water trap to prevent sewer gases from entering the home. Dishwashers don’t have an internal water trap, so they must use an external P trap. The most convenient P trap for the dishwasher is already in the plumbing under your sink.

Yes, if your filter is damaged or simply too debris-filled to be of use, replace it with a new component. Check the instruction manual that accompanied the dishwasher for information as to the specific part. There are many online marketplaces that sell these parts, but perform due diligence to ensure you buy the right one.

A standard dishwasher size is 24-by-24-by-35-inch for a built-in unit. The depth and height line up perfectly with most kitchen countertops and cabinet sizes.

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