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 Nuevo, CA

*The Angi rating for Dishwasher Installation companies in Nuevo, 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 Nuevo, 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 April 17, 2026

Reviewed in April 2026
Partial kitchen remodel to add dishwasher
BNR Diamond Construction & Consulting
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Reviewed in January 2026
Dane was great we called 4-5 other people all told us they coould not do the sub floor job. Dane showed up gave a reasonable quote for the repair of the sub floor and redo the kitchen, bathroom, living room, and hallway flooring. installed a new toliet, dishwasher with plumbing hookups and new...
HANDYMAN DANESERGI - Unlicensed Contractor
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Reviewed in October 2025
Ryan did a great job installing recessed lights and an outlet. He took the time to walk us through our options for installation. He was reasonably priced, and we will hire him again.
Mr. Watts Electric
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Reviewed in January 2025
Jason installed a new sliding glass mirror in my daughter?s room. He was on time, clear about his pricing, detail oriented, and very clean! Will definitely hire him to come back for more projects we need done in the future.
Home Tuneup Specialist
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Reviewed in February 2024
Quick and efficient. The part was delivered earlier than expected and he was able to installed it asap. Would highly recommend.
Peter's Appliance
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Reviewed in October 2023
He called right away and found out what I needed. Ordered the supplies and once the shower door came in contacted me for an appointment date. He was quick and clean with the installation and texted pics afterwards. Definitely would recommend this contractor!
AG GLASS
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Reviewed in May 2023
I hired them to complete the install on a mini split system. I did all the installation on equipment, Copper lines and running the electrical. I just need them to pressure check the system and create a vacuum within the system. They replied quickly, were on time, and were professional. I would...
AR Cooling and Heating, LLC
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Reviewed in August 2022
This project was to install custom size glass shower doors. The doors are beautiful and professionally installed. The total cost was less than than purchasing uninstalled doors from a retail store.
Lion Glass Installations, Corp.
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Reviewed in February 2022
Fantastic. Quick, clean, install! Yeah no more spotted shower doors, glasses, calcium buildup…. No more CLR
Select Source Water
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Reviewed in January 2022
Great service, friendly young man installer, reasonable price to swap out old kitchen faucet and install a new one.
All Trades Home Improvements, LLC
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Dishwasher Installation questions, answered by experts

Yes, if your filter is damaged or simply too debris-filled to be of use, replace it with a new component. Check the instruction manual that accompanied the dishwasher for information as to the specific part. There are many online marketplaces that sell these parts, but perform due diligence to ensure you buy the right one.

Professional services ensure correct installation, verify water-tight seals, and safely address plumbing and electrical connections in dishwashers.

A clogged air gap can cause a dishwasher not to drain. There are, however, other potential issues that can lead to improper drainage. For example, if you have attached the air gap to a garbage disposal and forgotten to remove the knockout plug, wastewater may backflow into the dishwasher. Check that the air gap is installed properly, and then look for clogs in the air gap and dishwasher filters.

To create a siphon break and remove any chance of dirty sink water or water that backs up into the sink from getting into your dishwasher, your dishwasher drain hose needs to have a high loop or an air gap device as part of its installation. All building codes require at least a high loop. In many places, it’s necessary to install an air gap device to meet the code.

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 Nuevo, 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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