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 Cameron Park, CA

*The Angi rating for Dishwasher Installation companies in Cameron Park, CA 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 Cameron Park, CA 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 September 20, 2025

Reviewed in September 2025
I?m so happy with my new water heater installation. The job was done on time, and the installers were polite and knowledgeable. Highly recommend their service!
Go Pro Plumbing, Heating & Air
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Reviewed in July 2025
Don was very easy to work with. He brought his assistant Adam with him. Both were professional and I was amazed how only two people could get that installed in just one day. Very clean install- it looks very good.
2 Plumbs Up Plumbing & Remodeling, Inc.
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Reviewed in October 2023
Vic is an excellent repairman. He repaired my Bosch dishwasher after going out to get the part and returning an hour later. He explained the problem clearly and worked quickly. Very intelligent and polite. The fee was fair and I would definitely call him again for any problems with an appliance.
Qualified HVAC
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Reviewed in May 2023
Handled a tricky install quickly and at the lowest cost.
Murray Plumbing
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Reviewed in March 2023
I met Richard over 10 years ago. I was looking to get my kitchen floor replaced. I got 3 bids and Richards was the middle one. I just love the time he took on answering all of my questions, even stopping in the middle of the job. Very few put tile under the dishwasher , Richard does it the...
Crawfords Tile
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Reviewed in October 2022
Install team arrived at 8:00. Removed existing exterior condensing unit and indoor furnace. New equipment installed and running by 1:00. Very pleasant and courteous installers.
Gilmore Heat Air Solar Contractors
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Reviewed in September 2022
The service was timely and the technician took the time and attention when installing also had parts that did not come with our dishwasher to complete the installation.
A to Z In Home Appliance Repair
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Reviewed in January 2021
Paul was Quick to respond to my request for service call. Very professional on the phone. Kept appointment that was set up. Efficient and knowledgeable n finding problem with my dishwasher. Thoroughly explained the problem and made the repair. Dishwasher running great now. Reasonable...
NORTH POLE SUPPLY INC.
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Reviewed in April 2020
Mike went above and beyond to help me with the remover of the dishwasher. Thanks for your assistance.
Mike's Maintenance and Repair - Unlicensed Contractor
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Top-Rated Dishwasher installation pros in Cameron Park - Updated Nov 2026

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Dishwasher Installation FAQs, answered by experts

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, you can use vinegar to unclog a dishwasher. To do so, combine 4 tablespoons of white vinegar with 4 tablespoons of baking soda and pour the mixture down your dishwasher’s drain. Let it sit for 15 minutes, then pour a cup of hot water down the drain to flush everything out. Finally, run a rinse cycle on your dishwasher to see if the clog is gone.

DIY installation or repair is possible with the right skills and tools, but if not done correctly, it can often lead to water leaks or improper connections.

A dishwasher can help save you significant time when it comes to getting your dishes clean. It can also get your dishes more hygienically clean than washing by hand due to higher water temperatures and specialized detergents, effectively sanitizing them and reducing the risk of foodborne illnesses. Compared to hand-washing, a dishwasher typically uses less water and energy to clean the same amount of dishes, making it a more resource-efficient option.

Yes, vinegar is an excellent homemade solution to clean a dishwasher. Its acidity will cut through any buildup, while its natural deodorizing capabilities will take care of any nasty smells.

The Cameron Park, CA 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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