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How to Install a Dishwasher Correctly?

14.03.2024

Installing a dishwasher might seem like an easy task, but it can become complicated if it is not done correctly. People often face issues with draining and even leaking when their dishwashers are not installed properly. However, there is no need to worry. By following some basic guidelines from Jacob Dillard, an Appliance Repair Expert engineer, you can ensure that your dishwasher is installed appropriately and without any issues.

How to prepare the installation site?

Before installing a dishwasher, ensure that the area is clear and free of any obstructions. If there is an old dishwasher already installed, remove it along with all the hoses that come with it. Once the old unit is removed, there should be one or two openings in your cabinet for the water supply hose and drain hose. These holes are usually located on the sidewall near the sink. Make sure that you have a power source, such as a wall socket or a wire that is divided into black, white and green (line, neutral and ground).

supply hose, drain hose and power connection for dishwasher

Connect a dishwasher to the power source

Before you install the dishwasher, it’s important to lay it on its side and put a towel or blanket underneath it to avoid scratching the floor. This will allow you to easily access the water supply connection and electrical box. Before using the dishwasher, make sure that the power supply is off. If you have any questions about the installation process, please refer to the dishwasher’s manual.

dishwasher installation

Connect a dishwasher to the water supply

Most dishwashers do not include a mounting kit, so you will have to purchase one separately. You can easily find a complete kit for $20-60 at any hardware store. To install the dishwasher, connect the water inlet connector to the dishwasher inlet valve and tighten it firmly with a spanner.

a mounting kit for dishwasher

However, be careful not to apply excessive pressure as this may damage the plastic valve. Once the connector is properly secured, connect it to the water hose and thread the water and drain hoses through the opening in the cabinet.

Connect the remaining parts

water supply hose connection to dishwasher

After feeding the hoses through, ensure that the dishwasher’s height is almost the same as the cabinet’s opening. Measure the height of the opening with a measuring tape and adjust the dishwasher’s legs accordingly. Make sure to leave a few centimetres of space to make it easier for the dishwasher to fit into the designated space. Once the dishwasher is in position, connect the water supply and drain hose to the connectors.

drain hose connection from dishwasher

Make sure everything is connected properly

Once you have connected the dishwasher, it is important to ensure that it is levelled properly to avoid any leaks. You can use a level tool to check the front door of the dishwasher both vertically and horizontally. Adjust the level until the unit sits as straight as possible. Once you have achieved the perfect level, secure the unit with the screws or brackets provided in the dishwasher documentation.

screws and brackets to secure dishwasher

One important thing to keep in mind while installing a drain hose is to ensure that it is attached above the level of the sink. The hose should be arranged in a rollercoaster-like fashion, with its parts going up (above the sink level) and down to the drainpipe connection. This will help in creating pressure in the drain system, ensuring that your unit drains efficiently and without any clogs in the future. A useful tip to secure your drain hose is to use zip ties and connect it to another pipe located underneath your sink.

drain hose and sink levelling

It’s important to prepare the area by ensuring it’s clear and having the necessary water supply, drain, and power connections ready. If you need a specialist to perform a professional dishwasher installation, don’t hesitate to contact us!

Author: Jacob Dillard
My name is Jacob Dillard, and I am the author of articles at Appliance Repair Expert. Since childhood, I have been fascinated by technology and spent much time reading different books and trying to repair my first CD player. Then, I graduated from the University of Toronto with a degree in Applied Science and Engineering. In a year, I got my first job as a technician at an appliance repair company. After years of practice and working with professionals, I decided it was time to share my knowledge and experience here at Appliance Repair Expert. I want to help you understand everything related to appliance repair, maintenance and installation in the simplest way possible. It will be fun, believe me!

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If there are problems with the dishwasher or you need to install it, do not hesitate to us. An experienced dishwasher tech will determine the cause of the malfunction, eliminate it as soon as possible and give recommendations on the further use of the repaired equipment, and you will be able to enjoy its proper work for many more years.

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