Are dishwashers more energy-efficient than handwashing?

• <div><p>The answer is a resounding yes, as <a href="https://www.angi.com/articles/hand-washing-vs-dishwasher-cost.htm">dishwashers save significant water</a> and energy compared to washing dishes by hand. The difference is so drastic in fact that those who use energy-efficient dishwashers can expect savings of over <b>$450</b> <b>per year</b>. This is because dishwashers use less water, they wash at a higher temperature than a hand rinse, and you don’t need to rinse them after washing. New dishwashers use around 4 gallons per load, whereas washing by hand can use up to 2 gallons per minute.</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 Naperville, IL

*The Angi rating for Dishwasher Installation companies in Naperville, IL 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 Naperville, IL 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 30, 2026

Reviewed in April 2026
John came on time for the job as he said he would; finished the job within an hour and cleaned up so well as if there was nothing done in the kitchen until you see the work that he has done which is to take out 2 tiles so my new dishwasher can be installed. John will be back to install new...
Alpha Tile
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Reviewed in February 2026
Ellis did a great job changing the wood under our dishwasher and a few other small jobs. He provided videos to show the damage. He was on time and very professional. We would recommend him highly.
Erols Construction
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Reviewed in December 2023
Was very informative with all my question and my dishwasher feels brand new.
Appliance Rescue Service
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Reviewed in February 2023
We consider ourselves absolutely lucky to have found Dave Proctor. He knows his stuff, is ready to answer all questions, and was able to assess and correct the dishwasher problem quickly. On top of all that, he is delightful to talk with. We will recommend him to all our friends and neighbors.
Partsworxs Home Services
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Reviewed in November 2021
Darrell did excellent work installing a new outlet for the dryer. Installation and cleanup very well done
All About Electric
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Reviewed in October 2021
Steve installed our new chandelier and outdoor porch lights. He was very knowledgeable and the installation was quick and well done. Will definitely hire again when needed!
EMF Electric
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Reviewed in May 2021
I hired Wiz Plumbing to install a new faucet, a new garbage disposal, three shut-off valves and new sink and dishwasher drain lines. Blendi, the installer, showed up on time and quickly went to work on the job. Everything was done professionally. completely and correctly. I would have no...
Wiz Plumbing
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Reviewed in December 2020
Melvin Flores is a consummate professional. He called to let me know when he was on his way to my home. When he arrived he was very polite. He explained the problem I was having with my dishwasher and fixed it efficiently. I highly recommend him for appliance repair (my only experience...
Melvin Flores
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Reviewed in February 2020
Hung my door and installed a rack in our dishwasher
Silver Hammer Construction
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Reviewed in October 2019
Tommy is awesome. Did a great job installing the new dishwasher, and gave me good advice about fixing some electrical problems and aligning the doors on our new refrigerator. Both problems are now fixed. Highly recommended!
Mr. Handyman of Wheaton-Hinsdale
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Dishwasher Installation questions, answered by experts

The answer is a resounding yes, as dishwashers save significant water and energy compared to washing dishes by hand. The difference is so drastic in fact that those who use energy-efficient dishwashers can expect savings of over $450 per year. This is because dishwashers use less water, they wash at a higher temperature than a hand rinse, and you don’t need to rinse them after washing. New dishwashers use around 4 gallons per load, whereas washing by hand can use up to 2 gallons per minute.

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.

Yes, vinegar is an excellent homemade solution to clean a dishwasher. Its acidity will cut through any buildup, while its natural deodorizing capabilities will take care of any nasty smells.

Repair costs vary by issue, typically from $100 to $500, depending on the parts needed and labor involved.

Common issues include drainage problems, faulty doors, inconsistent cleaning performance, unresponsive controls, or unusual noises.

The Naperville, IL 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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