How to Replace a Built in Dishwasher

How to replace a built in dishwasher? You will need to know how to remove the old washing machine, install a new one, and look for water, sewage and electricity connections. Below we review how to do this, what are the appropriate times, and avoid common mistakes.


How to Replace a Built in Dishwasher

If you ask yourself: how to replace a built-in dishwasher? Is it hard to replace a built-in dishwasher? In fact, you don’t need any tools or skills to replace or install the washer, since most of them are 24 inches wide, so you don’t need to change cabinets to get the new one. But if you change the sizes you have to replace the cabinets, but that takes better carpentry skills.

How do I replace my dishwasher with a new one?

You may find that the extra layers of flooring have raised the floor height in front of the old dishwasher. 

  • This makes it difficult to remove the old dishwasher and install the new one.
  • Loosen the countertop or sweep the floors. Bring a blanket, old rug, or cardboard to protect the floor.
  • Gather two adjustable wrenches, a screwdriver, a tape measure, a pair of pliers and a level, don’t forget a shallow pan, bucket, sponge and rag to collect the water that will drain from the lines after they are disconnected.
  • Then disconnect the power from the main panel or from the sink, turn off the water, either from under the sink, or at the water heater.
  • Next, remove the cabinet doors from the base of the sink to make it easier to disconnect the drain lines.
  • Turn off the power, remove the front panel, test the voltage to verify that there is no electricity, then disconnect the wires and pull the cable out of the box.
  • After you remove the power line from the box, leave the cable clip open and use it again on the new washer. Sometimes washing machines are connected to a socket and wire instead of “hard wire”. Unplug the wire and use it again in the new washing machine. If it is damaged, you must replace it.
  • Remove the nut and hold it at a 90-degree angle.
  • Flexible copper or stainless-steel braided water supply line.
  • As long as the nut and washer are in good condition with no cracks or holes, leave them on the line for reuse later.  Bend the copper line slightly, being careful not to bend the line.  If you do, you must replace it.
  • Remove the 90-degree fittings to use in the new washer, and adjust them in the same direction so that the water line is fed directly.
  • Blot up standing water in the washing machine with a sponge, then remove the drain line under the sink. When removing the old washing machine, put the drain hose back through the hole in the sink cabinet.
  • Lower the washer further to remove it, as the leveling feet may be difficult to rotate, but they make it easier for oil to penetrate the threads.  If you need more clearance, cut the feet off with the saw blade and turn the screw.
  • Then place cardboard or a rug under it to avoid scuffing your floor when you pull out the dishwasher.

Can I install a dishwasher myself?

Simply, yes, you can install the new washing machine according to the instructions in the box, as you find the guidebooks and installation instructions in it.

Installing a dishwasher for the first time

When you want to install a washing machine for the first time, you must read the instructions and bring the necessary tools. Do dishwashers need to be installed by a plumber?

Dishwasher installation kit

  • 4 in 1 screwdriver.
  •  Adjustable spanner.
  •  level gauge.
  •  pliers.
  • voltage tester.
  • Braided water line made of stainless steel.
  • Teflon.

How to install a dishwasher where there was none UK?

Wrap the fitting at a 90-degree angle twice with Teflon, then wrap it with the new valve.

  • After that, straighten and straighten the elbow, as on the old machine.
  • Tilt the washing machine on its back and tie it at an angle of 90 degrees.
  • Do not use the old drain hose, the dishwasher comes with a new one, be sure to attach the flexible drain line to the bottom of the worktop so that the sink does not clog.
  • Sometimes he installed an air gap in the drain line.
  • Adjust the leveling feet and wheels to the height of the slot before placing them in the washing machine.
  • But in the event that your kitchen floor is built on, you must adjust the feet after moving them in the slot.
  • If the washing machine is equipped with rear wheels without adjusters in the back, you need to adjust the shims to raise the back to the finished floor height.
  • Then fix it on the ground so that it does not flop when operating.
  • Hold the sides of the washer and lift it slightly, then roll it into the opening.
  • Don’t forget to protect the kitchen floor with tarpaulin or cardboard.
  • Insert the washer and hold it on both sides so that the front panel does not dent.
  • Set it in place, and stick it to the surface
  • Make connections and adjustments.

How to connect a dishwasher to water supply?

The copper water line must be connected so that there is no leakage, by aligning it to slide directly into the threaded elbow part, if you straighten it on one side, the pressure nut on the right will not thread so that it does not leak. Or rotate the elbow slightly with a wrench, or gently bend the copper lines 8 to 12 inches apart.

  • Then connect the electric cable and drain, turn the power and water back on, and don’t forget to check that there are no leaks. 
  • Check the location again and attach the washing machine to the worktop, if the worktop is synthetic material or stone, see the instructions of the manual.


In conclusion, when you know: how to replace a built-in dishwasher? Do not forget to consult a professional installer in case you do not have enough experience.

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