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>

How long will it take to install my dishwasher?

• <div><p>Installing a dishwasher should take one to four hours, depending on the complexity of the installation and whether you DIY or hire a pro. Even if you're particularly handy, installing a dishwasher on your own will likely take longer — at least two hours. On the other hand, a professional can likely install a dishwasher in about an hour. Installation time will take longer if you have to remove an existing dishwasher, reroute plumbing, or repair damaged flooring underneath the appliance.</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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Verified Reviews for Dishwasher Installation pros in Star, ID

*The Angi rating for Dishwasher Installation companies in Star, ID 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 Star, ID 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 26, 2025

Reviewed in February 2025
Our installers Beau W. & Nikita S. Installed our new front door and bathroom window, they did an awesome job- friendly, on time, and clean! We’re very excited with the results.
Renewal by Andersen of Boise
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Reviewed in December 2023
So as my wife pointed out I'm not as young as I used to be. So when we got a new dishwasher, she insisted we have a pro install it. Im sure this is because e of my age, nothing to do with the freezer incident. Despite the blow to my ego, I allowed it. I figured it would take forever to get...
Precision Appliance Installations, LLC
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Reviewed in May 2023
At the direction of Jesus, his crew showed up, removed the old countertops, sink, and cooktop. Then took measurements and created a template for the new top. Within the same week, they delivered and installed a brand new quartz countertop, and island. Installed new sink, new cook top, and...
Lumi Construction, LLC
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Reviewed in April 2023
Falcon flooring originally installed Cortech tile in my Kitchen. They did one outstanding job. Looked beautiful. When I installed my Dish washer I didn't notice it was dripping so slowly. Water Had gotten under the tiles and had water damage all the way through the subfloor. I again called...
Falcon Flooring, LLC
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Reviewed in February 2023
Service was prompt, installers did a pretty good job and cleaned afterwards.
Superior Stone
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Reviewed in July 2021
Next day service. Very professional and clean install.
Premier Connections
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Reviewed in July 2021
Went well Sales person and installer were very nice and friendly Would highly recommend
Superior Water & Air Inc
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Reviewed in June 2020
Installed a dishwasher and was very knowledgeable. Performed the work at the agreed upon price and did a great job
Husband for Hire
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Reviewed in July 2019
Nick was quick to reply and schedule. The replacement dishwasher needed a few extra parts for connection. He went to buy the parts , returned and did an excellent installation in a job that required at least double the normal time due to some irregularities with the original dishwasher...
Fabricor
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Dishwasher Installation questions, answered by experts

You should follow the instructions listed on the detergent packaging and in your dishwasher user manual. Often, this means inserting the tablet or pod into the detergent dispenser (and not in the bottom of the dishwasher). If you put the pod anywhere else, it might dissolve too early in the cycle and fail to clean your dishes properly.

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.

You can repair minor damage to a dishwasher drain hose with tape designed to handle moisture but it’s probably better to simply replace it. Dishwasher hoses are inexpensive items that, although they require some muscle to change, are best swapped out. You don’t want to find your kitchen has flooded because of a faulty part that usually costs between $10 and $30.

Installing a dishwasher should take one to four hours, depending on the complexity of the installation and whether you DIY or hire a pro. Even if you're particularly handy, installing a dishwasher on your own will likely take longer — at least two hours. On the other hand, a professional can likely install a dishwasher in about an hour. Installation time will take longer if you have to remove an existing dishwasher, reroute plumbing, or repair damaged flooring underneath the appliance.

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.

The Star, ID 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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