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Installing a Dishwasher


Plan ahead before installing a dishwasher. Measure the space to find out what size you should buy. Most dishwashers are 24 inches wide and 34 inches high, and will hold 12 to 14 place settings.


There are many options available with today's dishwashers. Dishwashers have light cycles for washing delicate or lightly soiled dishes, normal cycles for everyday usage, rinse cycles to remove food and energy-saver cycles for drying.


Energy-conscious buyers should inspect the yellow Energy Guide label for the efficiency rating. The lower the number, the less energy the dishwasher will use over a one-year period.




Step 1: Prepare the Dishwasher for Installation

Prepare the Dishwasher for Installation Read the manufacturer's instructions for the location of the power supply and drainage lines. Remove the bottom access panel to find the power cord connection, inlet solenoid valve and drain outlet. Measure and mark the location to cut a 1-1/2" hole in the wall of the sink cabinet. The drain line water supply line and power cord will be fed through this hole. Slide the dishwasher into place and verify the location. Adjust the mark if necessary.  Slide the dishwasher back out and set it aside to make more room to work beneath the cabinet.

Step 2: Cut the Hole for the Supply and Discharge

 Cut the Hole for the Supply and Discharge Cut the hole in the cabinet wall with a power drill and hole saw.

Step 3: Connect the Lines

Connect the Lines Run the drain tubing, supply line and power cord. Slide the dishwasher into place. Level the dishwasher by adjusting the threaded feet. A good way to check for level is to open and close the door - it will operate smoothly if the dishwasher is level. When level, tighten the locknuts. The mounting brackets for the dishwasher should also be aligned with the underside of the countertop and the side of the cabinet. Install the compression elbow on the dishwasher solenoid. Bend the supply line so it lines up with the elbow.  Slide the compression nut over the tubing, and then place the compression ring over the end. Connect the tubing to the solenoid using an adjustable wrench.  Install a tee on the hot water supply. Measure and cut tubing to the tee.  Connect with compression fittings. Turn on the water. Inspect for leaks and then tighten connections as necessary.

Step 4: Install the Drain Line

Install the Drain Line Replace the regular sink drain tailpiece with one that has a side inlet.  Connect the drain line to the dishwasher outlet using hose clamps. Measure the hose and cut it to length so it connects to the inlet with another hose clamp. If local codes require an air gap, read the instructions to install one.

Step 5: Hook up the Power

Hook up the Power Match the wires: connect white to white, black to black and the green to the ground screw. If the colors are different, read the manufacturer's instructions for connecting the wires. Connect the wires with wire nuts.  Plug the power supply cord into an electrical outlet installed under the sink cabinet. Run the dishwasher through a test cycle to make sure it works properly.