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>

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300
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Verified Reviews for Dishwasher Installation pros in Richmond, VA

*The Angi rating for Dishwasher Installation companies in Richmond, VA 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 Richmond, VA 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 May 02, 2026

Reviewed in May 2026
My dishwasher was not draining properly. G&amp;G Property Services responded to my request very quickly! Great service, the technician was professional and knowledgeable, and the repair completed properly. I will definitely be using their services again! 10/10 experience
G&G Property Services
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Reviewed in February 2026
Gabe probably came over maybe 3 hours after my initial request and fixed my dishwasher after 45 mins. A true professional and even aligned my dishwasher properly. Thanks a lot!
Reynolds Appliance Repair LLC
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Reviewed in January 2024
Pete was amazing! He came and gave me an estimate and let me know all of the work/supplies that would need to be done prior to him installing the dishwasher. He was prompt, skilled, knowledgable, and personable!
OCD Handy Services LLC
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Reviewed in December 2022
My dishwasher suddenly wouldn’t start. I called several places which said it would be 1-2 weeks before they could come. I contacted Angi and Professional Appliance Repair called right away and said he could come the next day. David arrived with the proper control panel, since I had given him...
Professional Appliance Repair
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Reviewed in September 2022
They removed/modified a cabinet to install a dishwasher. After talking to several, I chose Tried & True for their ability to give me what I wanted. Price was reasonable.
Tried & Tested, LLC
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Reviewed in February 2022
David was very quick at getting back to my request, checking out my dishwasher, then returning to fix it once he had the part.
Professional Appliance Repair
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Reviewed in August 2021
DNA has done several things for me from installing a washer machine, to relocating a thermostat, to diagnosing a broken dishwasher and everything in between! Excellent service and value.
DNA Heating and Cooling
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Reviewed in January 2021
JBJ Plumbing installed a dishwasher in my home. They were very professional, did great work and the prices were very fair! We will be using them again for future plumbing needs and will be recommending their services to our family and friends in the area.
JBJ plumbing - Facebook
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Reviewed in January 2021
Stanley's company no longer install dishwashers. I was given a referral to Kelleher H & C and they performed the service quite nicely. I will use Kelleher again.
Stanley's Appliance Service
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Reviewed in November 2020
Matt worked hard to get the dishwasher we wanted installed in our existing kitchen. We had another business come out for a quote and they said the project wasn't possible, but Matt did it! We were absolutely thrilled with his professionalism, persistence, and obvious care in his work and will...
Custom Built and Painted
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Top-Rated Dishwasher installation pros in Richmond - Updated Nov 2026

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Dishwasher Installation FAQs, answered by experts

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.

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.

Maintenance includes regular filter cleaning, checking water connections, and ensuring that the unit operates at optimal efficiency without blockages.

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.

The average cost to repair a dishwasher that’s leaking is $200, but your total will depend on the underlying problem. Having a professional replace a faulty door gasket or a gasket in a supply line could cost as little as $50, while replacing a leaking dishwasher pump could total as much as $600.

The Richmond, VA homeowners’ guide to dishwasher installation services

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

See all articles

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