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  • Average homeowner rating star icon4.4
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Verified Reviews for Dishwasher Installation pros in Lafayette, CA

*The Angi rating for Dishwasher Installation companies in Lafayette, CA 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 Lafayette, CA 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 March 11, 2026

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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.  

Water is sitting at the bottom of your dishwasher, likely because the filter is dirty with food debris or because the drain hose has a clog. If the water is still sticking around after following the steps above, it’s time to contact a local plumber.

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 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.

While the exact appearance of the filter will depend on your dishwasher brand, it often consists of a cylindrical or rectangular mesh or plastic component. The filter is located at the bottom of the dishwasher beneath the lower spray arm. It includes a combination of a coarse filter, which traps larger food particles, and a finer filter, which captures smaller debris. The filter assembly may be a single unit or a multi-part system that can be twisted or snapped out for cleaning.

The Lafayette, CA 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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