Step 3: Hook up the water supply

man hooking up the water supply
Photo: Kolin Smith
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Lay down a tarp to protect the floor and tip the dishwasher on its back. Remove the cover panel at the bottom of the unit. Wrap Teflon around the water inlet's threads. Screw a brass elbow onto the inlet. Tighten it with an adjustable wrench.

Stand the dishwasher up and push it up to the bay. Check that the water and electrical lines are properly aligned. Feed the end of the drain line from the dishwasher through the side of the cabinet and up via the unused floor hole. Then have a helper guide the drain line as you slowly slide the dishwasher in place
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    Tools List

    • flathead screwdriver
      Screwdrivers
    • drill
      Drill/driver
      fitted with 1 1/4-inch and 2-inch hole saws
    • spade bit
      1-inch spade bit
    • needlenose pliers
      Pliers
    • adjustable wrench
      Adjustable wrench
    • Tube Bending Springs
      Tube Bending Springs
    • close quarter tubing cutter
      Close-quarter tubing cutter
    • torpedo level
      Torpedo level
    • wire strippers
      Wire Strippers

    Shopping List

    1. DISHWASHER
    The majority of built-in dishwashers come in only two sizes: 24 inches wide and 18 inches wide, both sized to fit under a standard 25-inch-deep and 36-inch-high counter. (Be sure to get a built-in dishwasher, not a portable one, which uses temporary connections at a sink tap and outlet.) Look for the Energy Star label on any model you buy—the criteria for dishwashers became more stringent in January 2007.

    2. 3/8-TO-½-INCH BRASS ELBOW
    to make the turn from the dishwasher's inlet to the copper supply line. This is a standard part for dishwashers and may be included in a dishwasher installation kit.

    3. TEFLON TAPE

    4. ½-INCH SOFT COPPER TUBING
    to bring water to the dishwasher. (The measurement refers to the pipe's outside diameter.) A 10-foot coil should be plenty.

    5. TWO ½-INCH COMPRESSION FITTINGS
    The number also refers to outside diameter. Each includes a brass ferrule (or compression sleeve) and a compression nut.

    6. ELECTRICAL WIRE NUTS to connect wire ends.
    Get ones that will fit two 12-gauge wires—either yellow or red.

    7. CABLE CLAMP
    to secure the electrical cable to the junction box on the dishwasher.

    8. NO. 6 HOSE CLAMP
    to attach the dishwasher's 5⁄8-inch drain hose to the sink's drain tailpiece.

    9. PLUMBER'S STRAPPING
    to hang the drain hose on the cabinet wall.