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>

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>

How do I know if my dishwasher drain hose is clogged?

• <div><p>Your dishwasher drain hose may have a clog if your dishwasher is full of water, your dishes aren’t getting cleaned, or water takes a long time to discharge into the garbage disposal.</p></div>

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Verified Reviews for Dishwasher Installation pros in Mobile, AL

*The Angi rating for Dishwasher Installation companies in Mobile, AL 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 Mobile, AL 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 November 28, 2025

Reviewed in November 2025
Water heater was efficiently installed, and they were pleasant to do business with. Would hire them again.
LT Drain and Small Repair
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Reviewed in May 2025
Billy was punctual and connected a dishwasher using the original wire that a previous plumber said could not be done.
Hughes Appliance Repair
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Reviewed in August 2024
Billy Hughes is very respectful of one’s property. He is very knowledgeable and efficient. I recommended him to my daughter who needed her dishwasher repaired. He came to her the same day she called. I would recommend Hughes Handyman Service to anyone.
Hughes Handyman Service
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Reviewed in September 2023
The installer came in politely and introduced himself as Christian and told me what he was going to do. He was timely and efficient. I am going to hire this company for other work that I need done.
MaxHome - New Bath
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Reviewed in October 2022
I had purchased a 12 foot metal gate on line from Florida and shipped to my home. I could not find anyone to install it till Gary. IÃ¢Â Â m so thankful to him. He installed it quickly and at a very fair price. He was very pleasant and accommodating to my schedule. Gate looks great. I canÃ¢Â Â t...
Emerson Custom Metal Works
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Reviewed in June 2021
Great workers…clean..respectful, and professional great work no problems at all great warranty and great installation
SPM Homes, LLC
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Reviewed in June 2021
Tony did a good job with the installation, but, more importantly, he came back for a small repair. Therefore, I got him to install some more. I like his work and I really appreciate that he stood behind his work. In all likelihood, I will use him again.
HelloGutters.com
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Reviewed in May 2021
Not the most professional looking bunch but fixed my dryer, dries better than when it was new. Price is a little high. 145 for diagnostic then another 125 to install plusâ s the price of parts.
One Piece Mechanical Services LLC - Home Facebook
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Reviewed in February 2021
The installer and estimator provided excellent service.
Precision Garage Door Service of Lafayette
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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.

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.

Your dishwasher drain hose may have a clog if your dishwasher is full of water, your dishes aren’t getting cleaned, or water takes a long time to discharge into the garbage disposal.

You can repair minor damage to a dishwasher drain hose with tape designed to handle moisture but it’s probably better to simply replace it. Dishwasher hoses are inexpensive items that, although they require some muscle to change, are best swapped out. You don’t want to find your kitchen has flooded because of a faulty part that usually costs between $10 and $30.

Professional services ensure correct installation, verify water-tight seals, and safely address plumbing and electrical connections in dishwashers.

The Mobile, AL 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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