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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Q: Does a dishwasher need an air gap?

• <div><p>Yes, a dishwasher needs an air gap to prevent backflow. Additionally, in many locations, air gaps or another measure to prevent backflow are required for building code compliance. There are alternatives to an air gap, like a Studor vent or a loop and trap design, but an air gap is the simplest and most popular solution. </p></div>

Q: Does a dishwasher drain hose need a loop?

• <div><p>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&rsquo;s necessary to install an air gap device to meet the code.</p></div>

Q: Can limescale be outside your dishwasher?

• <div><p>Limescale can build up outside your dishwasher if you live in a home with hard tap water. Any household surface exposed to water and heat may have unsightly limescale deposits, including kettles for boiling water, sinks, countertops, toilets, taps, tubs, shower doors, glassware, and aquariums. Glass, laminate, porcelain, granite, and other similar surfaces can all have limescale.</p></div>

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

• <div><p>If your dishwasher isn&rsquo;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&rsquo;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&rsquo;t locate and clear the clog yourself.</p></div>

Q: Why does my dishwasher smell bad?

• <div><p>The most common reason for a smelly dishwasher is a dirty dishwasher filter. The filter is responsible for catching food while your machine is running to prevent clogs. Over time, that filter gets more and more filled with food particles. Cleaning your dishwasher filter monthly can keep the smell at bay.</p></div>

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Verified Reviews for Dishwasher Installation pros in Addison, WV

*The Angi rating for Dishwasher Installation companies in Addison, WV 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 Addison, WV 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 June 30, 2026

Reviewed in June 2026
Excellent experience and amazing worker
California Home Center, Inc.
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Reviewed in May 2025
He did a great job building our new home.
Ballard+Mensua Architecture
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Reviewed in January 2024
This business was easy to work with and handled everything required satisfactorily. I would highly recommend their demolition services.
Lone Pine Land Management, LLC
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Reviewed in September 2023
Very prompt with their work and very good work grading property back to normal. Has been prompt on getting back to me about any other questions IÃ¢Â Â ve had.
Hall Construction
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Reviewed in August 2023
A quality product. Professionals. Price is a bit steep. But they have a lifetime guarantee.
LeafGuard
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Reviewed in August 2023
NICE WORKING WITH TRUST HAVEN SOLUTION THEY PROVIDE GOOD SERVICE FOR MY COMPUTER THANK YOU.
Trust Haven Solution, Inc.
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Reviewed in August 2022
They did exactly what they said they're supposed to do. Great service.
Ragus lanscaping llc
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Reviewed in October 2021
Anthony was prompt, friendly and efficient. We got to know him, two of his sons and his lovely wife. Anthony went out of his way after work to pick up more parts when he found the supplier didn't give him enough pieces to finish the job. At the same time, he checked on the availability and price...
Elite Handyman Plus
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Reviewed in September 2021
Russ arrived when he said he would: replaced a kitchen faucet and had to a also install shut-off valves. I had figured it would be a long job. He was done in 2 hours and all is working just great! He had a reasonable rate and was professional/businesslike.
Lakeview Maintenance Services, LLC
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Reviewed in September 2021
Tyler crushed it. The radon removal mitigation was not an easy one due to the radiant floor heat throughout the home. Tyler came with a can-do attitude and used his thermal heat laser to find the radiant heating and drill around it. I truly couldnÃ¢Â Â t be more pleased. Outstanding value for...
Lucas Contracting, LLC
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Dishwasher Installation questions, answered by experts

Yes, a dishwasher needs an air gap to prevent backflow. Additionally, in many locations, air gaps or another measure to prevent backflow are required for building code compliance. There are alternatives to an air gap, like a Studor vent or a loop and trap design, but an air gap is the simplest and most popular solution.

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.

Limescale can build up outside your dishwasher if you live in a home with hard tap water. Any household surface exposed to water and heat may have unsightly limescale deposits, including kettles for boiling water, sinks, countertops, toilets, taps, tubs, shower doors, glassware, and aquariums. Glass, laminate, porcelain, granite, and other similar surfaces can all have limescale.

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 most common reason for a smelly dishwasher is a dirty dishwasher filter. The filter is responsible for catching food while your machine is running to prevent clogs. Over time, that filter gets more and more filled with food particles. Cleaning your dishwasher filter monthly can keep the smell at bay.

The Addison, WV homeowners’ guide to dishwasher installation services

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