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>

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Verified Reviews for Dishwasher Installation pros in Union, KY

*The Angi rating for Dishwasher Installation companies in Union, KY 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 Union, KY 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 February 28, 2025

Reviewed in February 2025
The installer was prompt, courteous, efficient and professional. He sought our input and desires and cleaned up after himself.
Mad City Windows & Baths
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Reviewed in December 2024
Premier Kitchen Solutions did a great job installing my bathroom vanity.
Premier Kitchen Solutions LLC
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Reviewed in April 2024
I renovated my kitchen and had to upgrade the electric to accommodate the dishwasher and upgraded appliances. Andrew rewired the kitchen, moved several outlets, and made upgrades in the electrical box. He priced it fairly and completed the work on time and to code. He was also polite,...
Bell Electric, LLC
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Reviewed in September 2023
The installer did an excellent job.
The Gutter Magician of Northern Kentucky, Inc.
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Reviewed in April 2023
The installers Matthew W and Matthew H were very professional. They arrived on time and completed the job in one day as promised. They did a great job cleaning up after the install! I am very pleased with the tub remodel and would highly recommend!
West Shore Home Lexington
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Reviewed in May 2022
They installed the waterproofing system quickly in 2 days
Everdry Waterproofing of Cincinnati
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Reviewed in October 2021
Mark did a very clean install - everything looks and is working great.
Neumann Electrical and Handyman Services
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Reviewed in January 2021
My dishwasher is working fine now.
A Budget Appliance Repair
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Reviewed in April 2020
Could not be happier with the service I received last week. Dishwasher overflowed on Thursday, and shutoff valve to its water supply was leaking. I shut off all water to the house, and contacted PlumbTite around 5:00 PM. Dee found an appointment for Saturday. Then she contacted the dispatcher...
Plumb Tite Plumbing, Heating, Cooling & Drains
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Reviewed in April 2020
Could not be happier with the service I received last week. Dishwasher overflowed on Thursday, and shutoff valve to its water supply was leaking. I shut off all water to the house, and contacted PlumbTite around 5:00 PM. Dee found an appointment for Saturday. Then she contacted the dispatcher...
Plumb Tite, LLC
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Dishwasher Installation questions, answered by experts

Only if the dishwasher isn’t made of stainless steel. The corrosive chemicals in bleach will stain stainless steel and can also cause further damage. To stay on the safe side, stick with an extra cycle of vinegar to banish any lingering odors.

Repair costs vary by issue, typically from $100 to $500, depending on the parts needed and labor involved.

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

Leaks, poor drainage, failure to start, water not heating, and excessive noise frequently require service.

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.

The Union, KY homeowners’ guide to dishwasher installation services

From average costs to expert advice, get all the answers you need to get your job done.

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Angi
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Understanding the different parts of a dishwasher can help you troubleshoot any issues and know when to call in the professionals.