How to Plumb a Kitchen Appliance

Planning & preparation

• Here we are going to show you how to plumb in a dishwasher, but you can also use a similar technique to install most washing machines
• Bear in mind that some designs may have specific requirements and fittings, so be sure to check the manufacturer’s instructions
• Modern appliances are easy to fit, so as long as plumbing does not need to be rerouted, plumbing in a kitchen appliance is a straightforward task
• If any plumbing does need to be rerouted, then it’s best to call in a qualified plumber
• If you are fitting a new product, carefully inspect it for any damage prior to installation
• If you don’t have an accessible socket to plug your kitchen appliance into, have an isolation switch fitted by a qualified electrician
• Install the appliance onto a firm, level surface
• Turn off the water supply at the mains before carrying out any plumbing work

Do it right

• When removing your existing kitchen appliance, have a bucket and cloth to hand in case you need to empty any water from a pipe
• Bear in mind that the appearance of some fittings may vary from those shown here
• Once you’ve removed the old appliance, use tape to secure any loose pipes so that they are pointing upwards. This will stop water from dripping onto the floor as you dispose of the appliance
• Consider buying an energy efficient appliance in order to reduce the amount of power you use

Staying safe

• Always follow manufacturer’s advice for the appliance you are installing
• Some kitchen appliances can be heavy so ask a friend for help to lift and move them

Step by step

Step 1

Locate the stopcock and turn it clockwise to turn off the water supply.

Step 2

Carefully slide your old dishwasher out and unplug it from the wall.

Step 3

Disconnect the drainage waste hose from the drainage pipe and catch any water in a bucket.

Step 4

Turn off the valve on the cold water pipe by turning it 90 degrees.

Step 5

Twist the nut on the cold water pipe to disconnect it from the hose. Place a small bucket or bowl beneath the valve to catch any water that spills out.

Step 6

Move your new dishwasher into position with the back facing the space where it is to be fitted.

Step 7

Connect the cold water hose to the cold water supply. If necessary, hold onto the cold water supply pipe so that it doesn’t move as you tighten the house. Tighten by hand or with an adjustable spanner.

Step 8

Open the cold water valve but don’t turn the mains water back on at this stage.

Step 9

Connect the waste water hose to the drainage pipe which is usually located under the sink.

Step 10

Use a screwdriver to tighten the hose clip and secure the pipe.

Step 11

Plug the dishwasher in and turn the water back on at the mains supply. Check for any immediate leaks.

Step 12

Before pushing the machine into position, run a rinse cycle to double check for leaks in the pipes.

Step 13

If a leak does occur, check the connection between the supply and the cold water pipe and check the waste outlet connections. Call in a plumber if you can’t stop the leak.

Step 14

If all is well, carefully slide the dishwasher into position, taking care not to squash or twist the pipes behind it.

Step 15

If your appliance is an integrated model, fit a cabinet door as per manufacturer’s instructions.