How to Install a Built in Dishwasher

How to install a built-in dishwasher? This is the first question that comes to your mind when you buy a new washing machine, in fact it was designed to fit seamlessly into your kitchen countertop and between cabinets.  Below we look at how to install them, including: electrical connections, water supply, and drain lines.


How to install a built-in dishwasher?

How to install a built-in dishwasher? Are built in dishwashers hard to install? Can you install a dishwasher yourself?

In fact, before starting to install the washing machine, make sure that the intended cabinet space fits the washing machine that you want to install. It is designed to fit the standard width of 24 inches in the states, and it also fits directly to the side of the sink cabinet.

But What do you need to install a built-in dishwasher? Do dishwashers need to be installed by a plumber? Do you need plumbing for the dishwasher?

Dishwasher Installation Kit

In order to disassemble or install a dishwasher you need:

  •  Screwdriver.
  •  Teflon tape.

Installing a Dishwasher for the First Time

Drill the side of the washing machine from the sink cabinet 3 holes for the electrical wiring, the water inlet and the drain pipe using a power drill.  As for if you don’t want to connect the electrical wires, drill two holes.

But Do you need an electrician to hook up a dishwasher?

  • Have an electrician point a tester to make sure the wires are not “electrified”.
  • When you have the washing machine equipped with front connections, you must move it before completing the connections, but if it is equipped with rear connections, you must terminate the connections before putting it in place.

How to Connect a Dishwasher to Water Supply

Turn off the hot water supply line in the sink cabinet, connect the sink cabinet, turn the hot water shutoff valve clockwise, and open the faucet, allowing excess water to drain.

  • Connect the washing machine water supply line with the hot water line, one outlet connects to the faucet, while the other connects to the washing machine supply line. Wind the Teflon tape clockwise on the threads of the open outlet, then tighten the supply line on the outlet manually, and use a wrench to connect the supply line again.  If there is no double outlet valve in place, one must be installed, disconnect the supply line to the faucet, and then connect the double outlet valve to both the hot water line and the faucet supply line.  Using the thread tightening tape, then tighten the connection with your hand.
  • Attach the washer part to the sink drainpipe. It is a short stub of pipe that is smaller in diameter than the main drainpipe.  Unscrew and disconnect the P-trap section of the drainpipe with your hands if it is a PVC pipe.  Or purchase a replacement P-trap section that includes a dishwasher tailpiece and screw it back into place.
  • Hook the washer drain line at the back under the sink, then slide the end of the flexible drain line firmly over the back of the dishwasher.  Using a screwdriver, attach the hose clamp to the end of the drain line ensuring that the drain line does not slip off the tail piece.
  • Next, tie the drainpipe at the bottom of the sink over the back, then wrap a piece of plumber’s tie around the drainpipe and secure it under the top section of the cabinet under the sink with a screw.  This creates an upward arch in the drainpipe above the rear link, which prevents water from draining back up the washer.

Move the Washer Back to its Place

  • Run the water, sewer, and electrical lines along the floor from the back of the washer cabinet to the front, centering the bottom of the appliance. Check that each line extends 6 inches back, and use masking tape to secure them to the floor.
  • Now adjust the feet of the washer to adjust it to the appropriate height for the work surface, the bottom of which is 34.5 inches, use the adjustable feet on the washer to adjust the height.
  • Then slide it into place and adjust its height, push and shake it into the cabinet compartment so that the front of the dishwasher is flush with the front of the surrounding cabinets.

Completed Joins and Installation

Connect the water supply line to the washing machine by wrapping Teflon tape around the water inlet connection and attach the right-angle elbow to the inlet.

  • Secure the drain line to the appliance by twisting the hose clamp.
  • Connect the electrical wires to the washing machine and make sure there is no break, then feed the washing machine line with the box.
  • Connect the black wire of the washing machine with the black wire in the box, then secure the white wire of the washing machine to the white wire in the box, wrap the ground wire of the washing machine around the ground screw in the electrical box, then insert the secure connections into the electrical box of the washing machine and lock it.
  • Then fix the washing machine to the cabinet with the clips, make sure the machine is level and in the right place, and install the mounting brackets on the top of the washing machine.

But does a built-in dishwasher need a cabinet? How to install a dishwasher in a cabinet?

How to Install a Dishwasher in a Cabinet

  • Check that enough space is available, allowing it to be placed in the best position.
  • Find a washer that will fit your existing countertop height.
  • Connect the drain and water pipes under the sink according to the manufacturer’s instructions.
  • Connect the electrical wires and turn on the washing machine cable.

How to Install a Dishwasher Under a Counter?

  • Disconnect power to the washer at the circuit breaker in the main electrical panel.
  • Turn off the water at the shut-off valve under the kitchen sink.
  • Unscrew the screws securing the panel to the front bottom.
  • Then loosen the compression fittings using pliers and pull the water supply line out of the elbow connection.
  • Untie the electrical wires.
  • Unclip the hose and disconnect the drain line from under the sink.
  • Unscrew the two screws in the front top clips of the washer that secure it to the underside of the counter.
  • Pull the washer out.
  • Check the floors in the washer cavity for damage.
  • Hope the new washing machine is on the back.
  • Then wrap the threads of the new elbow of the water supply line with sealing tape.
  • Tilt the washer vertically and push it into the groove.
  • Connect the water supply line to the elbow and tighten the compression fittings with a wrench.
  • Turn on the water supply at the cut-off valve to test for leakage.
  • Then lift the slack portion of the drain line to the highest point in the cabinet below the sink and secure it with a plumber’s pipe strap.
  • Connect the electrical wires to the junction box on the bottom of the dishwasher.
  • Now set the leveling feet to bridge the gap between the bottom of the counter and the washer and lift it up.
  • Attach the metal anchor clips to the underside of the counter to secure the washer in position.
  • Turn on the electricity at the cut-off valve and turn on the water at the cut-off valve.
  • Run the washing machine to test it.
  • Attach the access panel to the bottom of the washer.

How to Install a Dishwasher Where There Was None

  • Unplug the electricity and water.
  • Decide where to install the washer.
  • Read the instructions for installation and use.
  • Connect the drain and water line and tighten the connections.
  • Reconnect the drain hose.

How to Install Integrated Dishwasher Door

  • Open the washing machine door by pulling the handle or pressing the button.
  • Find the position of the mounting screws.
  • Remove the screws with a screwdriver and set them aside.
  • Pull the door off the washer. It is held by small rollers that fit into holes in the front of the door.
  • Buy a door that matches the design of your cabinets.  
  • Align the mounting plate with the connection locations.  Install door rollers and couplings.
  • Slide the door over the roller slots and joints.
  • Fix the mounting screws with a screwdriver.


In short, the answer to the question of how to install a built-in dishwasher? can be known by reading the instructions for installing the device, you can thus clean dirty dishes.


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