How to Install a Dishwasher (2024)

1

Remove Old Dishwasher

Before you begin removing the old unit, read the manufacturer’s instructions for how to install a dishwasher. It may contain information specific to your new appliance, such as additional parts that might be needed for the model.

How to remove a dishwasher:

• Shut off the electricity to the dishwasher at the circuit breaker.
• Turn off the water supply at the shut-off valve under the sink. Dishwashers use your home's hot-water connection.
• Use a screwdriver to remove the front access panel near the floor.
• Disconnect the old wiring connections located in the terminal box.
• Disconnect the old water supply line from the dishwasher using an adjustable wrench.
• Place a shallow bowl underneath the connection to collect any water that leaks after you remove the nut.
• Disconnect the drain hose from the dishwasher.
• Remove the screws from the brackets that anchor the dishwasher to the bottom of the countertop and to adjacent cabinets.
• Place a drop cloth or piece of cardboard on the floor in front of the appliance to avoid marring the floor.
• Pull the old dishwasher out and move it from the area.
• Tape the existing electrical cable to the floor so that it is not disturbed when the new dishwasher is moved into place.

Tip: The power for the dishwasher may come from a receptacle in an adjacent cabinet. If this is the case, you won't need to disconnect the power underneath the dishwasher to remove it. It can be unplugged and the cord will pull out with the old unit.

2

Prepare for New Dishwasher

Unpackage the new dishwasher near the installation location. Keep any cardboard from the dishwasher box to protect your floor during the installation project. You could also use a dropcloth to cover the floor.

How to hook up a dishwasher:

• Tip the new unit onto its back to have easier access to the plumbing and electrical connections.
• Remove the front access panel.
• Attach the 90-degree elbow fitting from the installation kit onto the dishwasher water valve, following the manufacturer’s instructions.

The installation kit also contains a new water supply valve.

• Disconnect the old supply line from the shut-off valve.
• Route the new supply line through the hole between the sink cabinet and the dishwasher installation location.
• Temporarily secure the new water supply line to the floor with tape to prevent movement when the new dishwasher is pushed into place.
• Attach the new water supply line to the shut-off valve.

Now work on the dishwasher drain hose.

• Disconnect the old drain hose from the sink tail pipe or garbage disposal unit.
• Route the new drain hose through the hole between the sink cabinet and the dishwasher.
• Temporarily secure the new drain hose to the floor.
• Attach the new drain hose to the sink tail pipe or disposal.

Note: Secure any slack in the drain hose to the rear of the sink cabinet. Be sure that it arches higher than the drain inlet to avoid backwash from the sink drain.

Tip: Most dishwashers have tabs that secure it under countertops or inside the top support piece of the cabinet. With the door open, look under the countertop to see these tabs.

3

Connect Water, Drain and Electric Lines

Tip the dishwasher upright and slide it into its space. Then, get on the floor to connect lines to the dishwasher.

• Connect the water supply line to the 90-degree fitting, using pliers to ensure a tight fit.
• Turn on the water supply, inspect for leaks and tighten connections, if necessary.
• Connect the drain hose according to manufacturer’s instructions.
• Complete the electrical connections using wire nuts and following the installation guide.

When the water supply, drain and power lines are attached, turn on the electricity at the circuit breaker. Check to make sure the dishwasher is working before securing it into place.

4

Level and Secure the Dishwasher

• Make sure that the front of the unit is flush with the cabinet fronts.
• Use a level to ensure that the appliance is level and plumb so that it drains properly.
• Adjust the leveling legs as necessary and tighten the locknuts.
• Confirm the dishwasher’s placement and make any necessary adjustments.
• Use the included brackets to secure the unit to the underside of the countertop and the adjacent cabinets.
• Replace the front access panel.

5

Test the Dishwasher

• Make sure that the front of the unit is flush with the cabinet fronts.
• Use a level to ensure that the appliance is level and plumb so that it drains properly.
• Adjust the leveling legs as necessary and tighten the locknuts.
• Confirm the dishwasher’s placement and make any necessary adjustments.
• Use the included brackets to secure the unit to the underside of the countertop and the adjacent cabinets.
• Replace the front access panel.

6

Troubleshooting Tips

• If the dishwasher is not draining properly, check the drain hose for clogs.
• If the dishwasher is not filling with water, check the water supply valve and make sure that it is turned on.
• If the dishwasher is not turning on, check the electrical outlet and make sure that it is working properly.