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>

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Verified Reviews for Dishwasher Installation pros in Novato, CA

*The Angi rating for Dishwasher Installation companies in Novato, 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 Novato, 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 November 03, 2025

Reviewed in November 2025
The installation process was amazing. We walked the site, which involved two different types of fencing and several gates. The installer understood my concerns and he asked questions. Best of all, they were done in just a few hours! Highly recommended!
Ergeon
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Reviewed in July 2024
The installation went smoothly and the work was high quality.
Tankless Plumbing Solutions
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Reviewed in June 2024
It went well! I was a bit distraught because I called two other companies and it didn't work out. But the Prestige Worldwide Plumbing guys were friendly, the price was right, and they got my dishwasher fixed!
Prestige Worldwide Plumbing LLC
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Reviewed in August 2023
It's been one week since we had NCWC conduct an installation of a new water system in our house, and the results are nothing short of incredible. Our water tastes fantastic; we no longer have residue on our dishes (dishwater); our clothes are cleaner/brighter/softer; and the list goes on. The...
North Carolina Water Consultants
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Reviewed in February 2023
Mr Warner was in neighborhood when we called. He came over an hour ir so for evaluation and estimates. Two of his servicemen came two days later and wired our laundry room for 220 and my new electric dryer was installed that afternoon.
Warner Electric, Inc.
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Reviewed in October 2022
Fabulous installation and confirmation all was good to go!
Starving Plumbers
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Reviewed in October 2022
Installed a new water heater. They were very professional.
Starving Plumbers
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Reviewed in August 2022
Experienced, capable. Willing to explain the split ac system and design it for the house. Installers were prompt, efficient, very clean, and nice.
North Bay Heating, Air Conditioning and Sheet Metal, Inc.
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Reviewed in February 2022
They did a good job installing my dishwasher. I am still waiting for him to return for one last detail… but I believe he will return in a week. He seemed very knowledgeable and did not make a mess like the installers at Home Depot who try to install it before he did.
Talley Electrical Service
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Reviewed in January 2022
Professional installation of a tankless water heater.
Frank's Water Heater Company
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Dishwasher Installation questions, answered by experts

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

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.

The correct water temperature for your dishwasher depends on the washing phase. When water enters the machine, it should be around 120 degrees Fahrenheit, but no hotter than 150 degrees. During the wash cycle, the machine will heat the water to between 130 and 140 degrees. If your dishwasher has a sanitizing cycle, the water can reach a temperature of up to 180 degrees.

If the dishwasher is in working condition, start and run a complete cycle with nothing inside. Let it drain and sit overnight before removing the hoses. In theory, it should effectively drain. You may find residual water in the hoses, but you can plug them. If the dishwasher breaks down midcycle it can sometimes be full of water. You’ll need to manually remove the water with a plastic cup before removing the dishwasher.

Professional repair is advisable for electrical issues, refrigerant leaks, or unfamiliar problems. Technicians can accurately diagnose and fix such problems, ensuring safety and appliance longevity.

The Novato, 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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