How To Connect And Plumb A Dishwasher

Let’s be real: no one likes doing the dishes, especially when you can wash them in the dishwasher with a simple button!

But, before enjoying the convenience of sparkling clean dishes, you need to deal with your dishwasher installation. Whether you’re adding a dishwasher for the first time or replacing an older model, installing a dishwasher can seem like a daunting task.

In this guide, we’ll talk you through every step of the way. Read on to learn about preparing your space for a dishwasher, removing your old model and installing your shiny new appliance – and how Hoover can help reduce some of the hassle!

How to add a dishwasher

If you’re adding a dishwasher to your existing kitchen setup, there are some steps you’ll need to take before installing it.

First, carefully measure the space where you intend to place your dishwasher to ensure your model will fit. Next, ensure an electrical outlet is nearby and you have easy access to plumbing connections. Finally, plan for proper ventilation and clearance around the dishwasher – particularly at the front, as the door will extend past your existing kitchen cabinets. For a more detailed breakdown, check out our Dishwasher Measuring Guide.

Once you’ve done these things, you can get started on installation.

Disconnecting your old dishwasher

If you already have a dishwasher, you’ll need to remove your old appliance before your new one arrives. To do this:

  1. Pull out and unplug the dishwasher

Pull your old dishwasher out slightly from its storage space and unplug the appliance from the electrical socket.

  1. Turn off the water supply

Find the water supply valve. This will usually be located under the sink or behind the dishwasher. Turn it off to stop water from flowing into the dishwasher.

  1. Disconnect the water supply line

You’ll need to locate the water supply line, which is typically a flexible hose connected to the water inlet valve on the dishwasher. Grab a bucket, container or shallow pan and place it under the connection to contain any water that may spill out. Using a wrench, loosen the nut connected to the water supply line and the dishwasher. Then, carefully remove the hose and allow any leftover water to drain into the bucket.

  1. Remove the drain hose

Locate the drain hose, which usually runs from the dishwasher to the sink drain. Using a screwdriver or pliers, loosen the clamp that secures the drain hose and gently pull it from the connection. Again, place a bucket, container or shallow pan underneath to catch any water that is left in the hose.

  1. Remove the dishwasher

When you’ve ensured all connecting pipes and hoses are completely disconnected, you can unscrew any mounting brackets and fully remove the dishwasher. Use a dry towel to wipe up any spills and dispose of your old dishwasher following local regulations. Many councils offer collection services for appliances or free recycling centres, so explore the options near you.

Dishwasher installation: A step-by-step guide

Once you’ve cleared space for your new dishwasher, you’re ready to install it! To install your new dishwasher, we always recommend following the manufacturer instructions, as they’ll offer the specifics you need to know for your model. However, the steps below provide a general guide to the process.

How to connect and plumb a dishwasher

  1. Prepare the installation area

Make sure the area for your new dishwasher is completely clear and the power and water supplies are turned off. Check the manual for your new appliance, as installation for some models may vary,

  1. Plug in the dishwasher

Dishwashers in the UK are generally connected to an electrical outlet rather than hardwired, so simply plug the dishwasher into the socket.

  1. Attach the water supply line

Connect the water supply line to the water inlet valve on your dishwasher and tighten the connection. Your new dishwasher should come with a hose for this purpose. Slowly turn on the water supply valve to ensure there are no leaks at the connection point. If you notice leaks, the connection may need tightening further.

  1. Attach the drain hose

Connect your dishwasher drain hose to the sink drain, using a hose clamp to secure it tightly in place. Ensure that the hose is elevated and has a high loop or air gap to prevent the backflow of dirty water.

  1. Put your dishwasher in place

Once everything is connected, slide your new dishwasher into its designated space, taking care of the connected hose and wires. Ensure the dishwasher is fully level, using levelling feet if needed. You can then secure your dishwasher with mounting brackets.

Opt for free dishwasher installation with Hoover

Installing a dishwasher yourself can be a rewarding DIY project – but it can also be a challenge! In some instances, self-installation can void the warranty depending on the manufacturer's warranty terms, so always double-check whether a professional installation is required.

To take the hassle out of the process, why not opt for a new dishwasher with Hoover? All our appliances are delivered and installed by professionals, so all you have to do is sit back and wait for your brand-new appliance to arrive!

Ready to upgrade your kitchen with a new dishwasher? Explore the collection at Hoover and enjoy a seamless experience, from delivery to installation.