Although it can seem intimidating, installing a new dishwasher is well within the reach of most DIYers. But first, you must remove the old dishwasher, a task that involves disconnecting water and power connections, as well as dealing with the hardware bracketing that holds the dishwasher in place. Enlisting the aid of a helper will make this work easier, especially as you extract the appliance from the opening beneath the countertop.
Before You Begin
First, find the cord that provides power to the dishwasher and unplug it from the wall outlet. This wall outlet is often located under the sink.
Next, shut off the water. Locate the shutoff valve controlling the water line to the dishwasher. This will usually be located under the kitchen sink and will be attached to the hot water pipe, or to a two-way shutoff valve that controls water to both the faucet and to the dishwasher. If the dishwasher has been plumbed without a fixture shutoff valve, then you will need to turn off the home’s main water valve before disconnecting the water line.
Watch Now: How to Safely Disconnect and Remove a Dishwasher
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Source: The Spruce