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>

What is the standard size of a dishwasher?

• <div><p>A standard <a href="https://www.angi.com/articles/dishwasher-sizes.htm">dishwasher size</a> is 24-by-24-by-35-inch for a built-in unit. The depth and height line up perfectly with most kitchen countertops and cabinet sizes. </p></div>

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 Framingham, MA

*The Angi rating for Dishwasher Installation companies in Framingham, MA 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 Framingham, MA 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 11, 2026

Reviewed in May 2026
They did an excellent job fixing my dishwasher. The technician arrived on time and quickly solved the problem. I?m very satisfied with the service and definitely recommend them.
Horizon Appliance Solutions
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Reviewed in February 2026
This was a dishwasher installation for a house that never had one. Dave G from Level contacted me promptly after requesting service, was courteous and provided a very competitive quote. He has great customer service and provided impeccable support. We would hire again
Level Enterprises, LLC
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Reviewed in January 2025
?Adam was a lifesaver when my dishwasher stopped draining. He was friendly, efficient and left my kitchen spotless after the repair. Thank you!
Pegas Appliance Repair
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Reviewed in January 2025
My project was to install two microwaves. TJ is prompt, knowledgeable, courteous and neat. One of the microwave I bought was without the flush hinge. That prevented the door from opening full after it was installed. TJ patiently explained to me the kind that I need to buy and later that day...
TJ's Painting & Remodeling
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Reviewed in November 2022
The entire process from sales to installation was seamless
H2O Care Inc
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Reviewed in October 2022
Great work on the installation of my dishwasher
S&S Piping and Heat LLC
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Reviewed in March 2022
installed dishwasher. Very good experience. I would recommend them to anyone. They performed a difficult job with ease.
Professional Plumbimg
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Reviewed in November 2021
Dan installed my dishwasher but it has a leak where the hose conects. I have not been sucessful in getting him back to fix it. I will need to hire someone else to fix it.
TLC By Dan
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Reviewed in September 2021
Daniyyel performed a great job for me by replacing old dishwasher with a new one. I highly recommend him!
Handyman Geeky
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Reviewed in May 2021
The dryer installation went perfectly
Sostilio & Sons Plumbing & Heating
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Dishwasher Installation questions, answered by experts

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.

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.

A standard dishwasher size is 24-by-24-by-35-inch for a built-in unit. The depth and height line up perfectly with most kitchen countertops and cabinet sizes.

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 Framingham, MA 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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