How long will it take to install my dishwasher?

• <div><p>Installing a dishwasher should take one to four hours, depending on the complexity of the installation and whether you DIY or hire a pro. Even if you're particularly handy, installing a dishwasher on your own will likely take longer — at least two hours. On the other hand, a professional can likely install a dishwasher in about an hour. Installation time will take longer if you have to remove an existing dishwasher, reroute plumbing, or repair damaged flooring underneath the appliance.</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>

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>

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Verified Reviews for Dishwasher Installation pros in Pewaukee, WI

*The Angi rating for Dishwasher Installation companies in Pewaukee, WI 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 Pewaukee, WI 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 October 15, 2025

Reviewed in October 2025
Installed the next day. Everything was done and cleaned up by noon. The stainless steel mesh was the selling point for me.
LeafFilter Gutter Protection
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Reviewed in September 2023
The installation team were early and very thorough.
Mad City Windows & Baths
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Reviewed in April 2023
Jeff was in time and worked quickly. He did an excellent job at installing our glass shower door.
WhiteTop Construction
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Reviewed in November 2022
The company was kind and professional. They arrived promptly and assessed the issue. They did not charge us for the call, estimate, or time. Once we replace the dishwasher, if we need it looked at, we know who we will call.
AMTECH APPLIANCE SERVICE
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Reviewed in April 2022
BKB installed a new laundry sink in our laundry room, and did the plumbing work for our new family room with bathroom and shower. The work was precisely done, and met the required codes for my municipality.
BKB Family Plumbing Services
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Reviewed in June 2021
I needed electrical work (Jason & Jordan) and garbage disposal and dishwasher replaced (Ryan). On the electrical end they ran into problems due to the age of my condo and problems installing a wireless thermostat. They did not give up and found a way to make it work. All 3 gentleman did a...
Roman Electric Heating and Cooling
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Reviewed in April 2021
Thanks for a quick and clean installation
Premier Water Heaters LLC
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Reviewed in February 2021
Jim was very prompt, friendly and performed a neat and clean installation. I would highly recommend him.
Powerhouse Electrical LLC
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Reviewed in May 2020
We were very pleased with the service from Dave. He came on a Monday and figured out right away what the issue was. Ordered the needed parts and came back 4 days later to put them in. Our dishwasher is now running just like new. We will definitely call him again if we have any issues with any of...
Dave's Appliance Service
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Reviewed in December 2019
Jeff did an outstanding job of fixing our dishwasher. I highly recommend Jeff for repair of any appliances. He fixed our washer & dryer earlier this year with the same great service & at a low cost.
Jay Appliance Service
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Dishwasher Installation questions, answered by experts

Installing a dishwasher should take one to four hours, depending on the complexity of the installation and whether you DIY or hire a pro. Even if you're particularly handy, installing a dishwasher on your own will likely take longer — at least two hours. On the other hand, a professional can likely install a dishwasher in about an hour. Installation time will take longer if you have to remove an existing dishwasher, reroute plumbing, or repair damaged flooring underneath the appliance.

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.

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.

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.

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.

The Pewaukee, WI 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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