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 Sparta, MO

*The Angi rating for Dishwasher Installation companies in Sparta, MO 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 Sparta, MO 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 21, 2026

Reviewed in May 2026
I am very happy with the work that was done. I will be using them in the future. the job was done very quickly. the installer was very nice.
McPlumbing LLC - 4 Photos - Plumbing Service - 65622
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Reviewed in April 2026
Very good communication on when installing crew would arrive. Jessee arrived on time as promised, worked all day with 1 small break. Answered all our questions and explained what he was doing . Highly recommend this company. We had a walk in shower installed.
Mad City Windows & Baths
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Reviewed in June 2025
Everlast did a great job replacing a sliding patio door for me. Install looks great, they sealed the new door in well, and even cleaned up the broken glass from previous door. They charge a fair price for their work and communicate well.
Everlast Installations LLC
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Reviewed in June 2023
He was quick and timely and was able to complete installation to our satisfaction.
Owens Electrical
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Reviewed in July 2022
They were all polite helpful installation was much faster than we expected. Garage doors wouldn't work after installers have left called Scott they were back and had doors working with in 30 minutes. Very much appreciated.thank you
All Seasons Home Pros, LLC
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Reviewed in February 2022
We had a dryer vent relocated in our home. We had a slight misunderstanding about how to run it, but in the end the job was exactly what we wanted. The installers were polite and courteous the entire time and completed the job when they said they would.
Proman HVAC & Mechanical, LLC
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Reviewed in November 2021
Chris who made the initial estimate in our home was knowledgeable of water quality and was very pleasant. The installers were also kind and knew the requirements to install.
Aquasani, LLC
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Reviewed in September 2021
The installer completed our project during the hottest part of the summer and they’ve did a fabulous job.
Continental Siding Supply, Inc.
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Reviewed in May 2021
I originally called to get my dishwasher door adjusted from sticking. But then thought to ask, while scheduling, (it was not last minute requests), about my washer spinning off / out of kilter and the dryer hose needing to be replaced. He did all of that and was done in less than an hour....
Comfort Plus Heating and Cooling, LLC
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Reviewed in January 2021
Clean and professional installation. Easy to work with.
NextGen Electric, LLC
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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.

Depending on your available time and skillset, there are some aspects of dishwasher repair you can DIY. Remember that dishwashers use water and electricity, which can cause potentially hazardous situations. However, there are some things you can do to reduce your overall repair cost, such as:

Cleaning the spray arm
Unclogging the float
Replacing the door gasket
Cleaning the door filter
Adjusting the door latch

Leaks, poor drainage, failure to start, water not heating, and excessive noise frequently require service.

It might be time to buy a new dishwasher for your kitchen if you consistently notice a significant amount of water left over after a cycle, indicating potential drainage issues that are becoming persistent or costly to fix. Visible rust, especially on the interior tub or racks, suggests internal corrosion that will likely worsen over time and can compromise cleaning performance. Additionally, if your dishes are coming out excessively hot after the drying cycle, it could point to a malfunctioning heating element or thermostat, which can be an energy inefficiency and a potential safety concern, making replacement a feasible choice.

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.

The Sparta, MO 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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Apr 6, 2026Apr 6, 2026
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