What is the most common cause for a dishwasher not to drain?

• <div><p>If your dishwasher isn’t draining, some common causes include a clogged drain filter, drain hose, or air gap. Also, if you have a garbage disposal, a clog in the disposal can back up your dishwasher since they share plumbing, as can a clog in your kitchen sink’s plumbing. A handy DIYer may be able to figure out <a href="https://www.angi.com/articles/how-to-unclog-dishwasher.htm">how to unclog a dishwasher,</a> but you may need to call in a plumber if you can’t locate and clear the clog yourself.</p></div>

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 Cranston, RI

*The Angi rating for Dishwasher Installation companies in Cranston, RI 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 Cranston, RI 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 August 14, 2026

Reviewed in August 2026
Jim from JMB was wonderful to work with during our renovation which included a new water supply and drain for a new kitchen sink and dishwasher installation. He was considerate of our condensed timeframe and diligent about getting the work done in coordination with our other trades. Already...
JMB Plumbing, LLC
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Reviewed in March 2026
Highly recommend PAR Home Services! They installed my new dishwasher quickly and professionally. The work was clean, they tested everything before leaving, and the price was fair. I'll definitely be calling them for future projects.
PAR HOLDINGS LLC
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Reviewed in March 2025
Kevin and Paul were the techs who arrived right on time this morning to move the gas pipe behind my new stove so I could access my dishwasher right next to the range. They were courteous and professional, answered all my questions and cleaned up before they left. I would recommend Rooterman to...
Rooterman
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Reviewed in January 2025
I had a fantastic experience with Daniel’s handyman services! He installed a sink and dishwasher for me, as well as a few other small projects and I couldn’t be happier with the results. He was quick, friendly, and his pricing was very reasonable. Everything works perfectly, and the process was...
Daniels Services
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Reviewed in November 2024
It was the best experience Rob is A1 the best install I ever had very professional and clean definitely recommend
AVolutions LLC
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Reviewed in October 2023
Installers were very professional, polite, and accommodating.
EnviroSafe
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Reviewed in April 2023
Very professional showed up on time installed a washer and dryer unit for me. Works perfectly fine no problems at all. Have a central ac unit needing to be installed soon will definitely hire again.
THE CHARLES
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Reviewed in July 2022
Polite , professional work. Most importantly the introduction of a new dishwasher into my kitchen required some amount of innovation from the business owner Frank.
Rhode Island Appliance
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Reviewed in July 2022
I am happy about my dishwasher installing!
Robert M Refrigeration
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Reviewed in April 2022
Steve fixed a leaking/water retaining dishwasher in minimum time, explained everything to me. highly recommend him!!
Steve Dupre Plumbing
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Dishwasher Installation questions, answered by experts

If your dishwasher isn’t draining, some common causes include a clogged drain filter, drain hose, or air gap. Also, if you have a garbage disposal, a clog in the disposal can back up your dishwasher since they share plumbing, as can a clog in your kitchen sink’s plumbing. A handy DIYer may be able to figure out how to unclog a dishwasher, but you may need to call in a plumber if you can’t locate and clear the clog yourself.

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

The only way to repair a dishwasher door hinge is to replace the broken or damaged hinge. To do this, you'll want to remove the old hinge, install a new one that fits your specific dishwasher model, and reattach the panel.

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.

Costs depend on labor rates, replacement part prices, brand, and whether emergency service is required.

The Cranston, RI 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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