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How Do I Install a New Dishwasher?

John Turpin is our resident home service repair expert here at Service Direct. He’s got the knowledge and experience to help homeowners like you make sense of most home repair issues. And with Service Direct, we connect you with top-tier service professionals to help with any repairs needed.

Learn the Steps to Dishwasher Installation and Removal

Buying a new dishwasher usually includes hooking the appliance up, and even hauling away the old dishwasher. This is usually the case if you buy the unit from a specialty outlet. But if you bought yours from a home improvement center or an online shop, chances are dishwasher installation and removal isn’t part of the package.

Fortunately, installing a dishwasher on your own is perfectly possible. It’s not an easy task since the unit must be hardwired and connected to the plumbing, unlike plug-in appliances. This makes installing the dishwasher yourself a bit challenging. But don’t worry because it’s still possible and that’s what we’re here for.

In the comprehensive guide below, we’ll walk you through the step-by-step process of installing a new dishwasher, from preparation to testing. Let’s get started!

Step-by-step Dishwasher Installation Guide
Install a new dishwasher with John’s comprehensive installation guide.

Installing a New Dishwasher: A Step-by-Step Guide

You’re asking yourself, “How do I install a new dishwasher?” “What’s the step-by-step process of hooking up a dishwasher?” Read on to find out!

1. Collect the Necessary Tools and Materials

Before you begin the installation process, gather all the tools and materials you’ll need. These may include:

  • New dishwasher
  • Screwdriver
  • Adjustable wrench
  • Pliers
  • Teflon tape
  • Pipe fittings (if required)
  • Dishwasher installation kit
  • Safety goggles
  • Gloves
  • Level

2. Measure and Prepare Space

Measure the dimensions of your new dishwasher and ensure that it fits the designated space properly. Remove the old dishwasher if necessary, and disconnect the water supply, electrical connection, and drain line. Clear any obstacles or debris in the installation area to create a clean and accessible workspace.

3. Install the Mounting Brackets

Attach the mounting brackets to the dishwasher sides using screws and screwdriver. Make sure the brackets are secure and properly aligned with the slots or mounting locations on the sides of the dishwasher. These brackets will help secure the dishwasher in place once you position it under the countertop.

Our resident home repair guru, John Turpin, outlines some easy step-by-step DIY instructions for installing a new dishwasher including pro tips and tricks.

4. Connect the Water Supply Line

Find the hot water supply valve under the sink and turn it off. Disconnect the existing water supply line from the valve. If your new dishwasher requires a different type of connection, such as a compression fitting, you may need to install a new supply line. Apply Teflon tape to the threaded ends of the new supply line for a secure seal. Connect the supply line to the hot water valve and tighten it with an adjustable wrench.

5. Connect the Drain Line

Attach the drain line from the dishwasher to the drain under the sink. The drain line is typically a flexible hose that can be clamped onto the drain stub or an existing garbage disposal unit. Use hose clamps or compression fittings to secure the connection and ensure there are no leaks.

6. Connect the Electrical Wiring

If you are replacing an existing dishwasher, you can use the existing electrical wiring. But if you are installing a new dishwasher, consult a licensed electrician to install a dedicated circuit and outlet for the dishwasher. Make sure the power is turned off at the main circuit breaker before making any electrical connections.

Connect the wires from the dishwasher to the electrical supply, matching the corresponding colors – typically black to black and white to white. Lastly, secure the connections with wire nuts and cover them with electrical tape.

7. Position and Level the Dishwasher

Carefully slide the dishwasher into place, making sure it is aligned properly with the mounting brackets. Use a level to check if the dishwasher is perfectly horizontal. Adjust the front legs of the dishwasher as needed to achieve a level position. This is important to ensure proper operation and prevent leaks.

DIY Dishwasher Installation
Always double check you haven’t missed any steps before testing the dishwasher.

8. Secure the Dishwasher

Once the dishwasher is level, use a screwdriver to secure the mounting brackets to the underside of the countertop. Ensure that it is firmly attached and doesn’t move or wobble.

9. Test the Newly Installed Dishwasher

Before completing the installation, conduct a thorough test to ensure everything is functioning correctly. Turn on the water supply valve and check for any leaks in the drain and supply lines. Run a short cycle on the dishwasher to check for proper operation, including filling, washing, and draining. Look for any signs of leaks or abnormal noises during the cycle.

10. Complete the Installation

If the dishwasher passes the test, you can now finish the installation. Attach the dishwasher front panel according to the manufacturer’s instructions, if applicable. Reconnect the power supply by turning on the circuit breaker. Finally, clean up your work area and dispose of any packaging materials left.

Installing a new dishwasher can be a satisfying and relatively straightforward project with the right tools and knowledge. By following the “How to install a dishwasher step-by-step guide” above, you can install a dishwasher in your kitchen on your own.

Cost of New Dishwasher Installation

The cost of installing a new dishwasher can vary depending on multiple factors, such as your location, the complexity of the installation, and the specific services you require. Another factor is whether you take the DIY route or enlist the help of a professional plumber or appliance installer. All the same, here are some general cost estimates to give you an idea:

Professional Installation

If you hire a professional installer or a licensed plumber, the cost of installation ranges from $100 to $450 or more. This cost often includes labor, basic materials (such as water supply lines and drain hose), and the removal and disposal of the old dishwasher. However, additional charges may apply for complex installation or any modifications required for the plumbing or electrical connections.

DIY Installation

If you take the DIY route, the cost will primarily consist of the purchase price of the necessary materials and any tools you might need. Typically, basic installation materials like water supply lines, drain hoses, and electrical connectors range from $20 to $50 or more, depending on the quality and specifications.

Keep in mind that the above cost estimates are only general guidelines. They can vary significantly based on your specific circumstances and locations. Factors like the complexity of the installation, any modifications, and additional services required will impact the overall cost. Our advice is to contact a local appliance installation service to get an accurate cost estimate.

Pro Dishwasher Installation
DIY and professional installation each have their own advantages.

Dishwasher Replacement FAQs

Can I install a new dishwasher myself?

Yes, you can. It’s possible to install a new dishwasher yourself if you have experience with plumbing and electrical work. But it’s important to note that dishwasher installation involves handling water and electrical connections. These things can be complex and potentially risky if not done correctly. If you’re confident in your abilities and have the necessary knowledge and tools, you can install a new dishwasher by following the manufacturer’s instructions.

Is it easy to install a new dishwasher?

The ease of installing a new dishwasher varies depending on your level of experience with plumbing and electrical work, as well as the complexity of your kitchen setup. If you have knowledge and skills in these areas, the installation process can be relatively straightforward. However, it’s important to note that dishwasher installation involves multiple steps and careful attention to detail to ensure the connections are properly hooked up.

How long does it take to install a dishwasher?

The installation time can vary depending on the complexity of the job and any existing plumbing or electrical work required. On average, a professional installation can take anywhere from 1 to 3 hours.

Do I need to buy any additional parts or accessories?

Your new dishwasher usually includes all the necessary installation hardware. But you may need additional parts, such as a water supply line, drain hose extension, or electrical cord, depending on your specific installation requirements and the components included with the new dishwasher.

Can I install a dishwasher in a location without existing plumbing?

Yes. It’s possible to install a dishwasher in a location without existing plumbing. But it would require additional work, such as creating a new drain connection and extending the water supply line. This type of installation is more complex and is best handled by a professional.

Hire a Local Contractor

If you’re still not 100% confident even after reading John’s DIY dishwasher replacement instructions you might want to consider calling in a pro. Our local appliance repair contractors can be reached using the phone number or form on this page.

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