If you have been using a dishwasher or just purchased your first one, well, congratulations! You won’t have to worry about the utensils piling up in the sink. This game-changing kitchen appliance helps you save time and money with its energy-efficient performance.
Simply toss your dirty dishes into the dishwasher, add the most reliable and effective dishwasher detergents, and add a pinch of additives for an extra boost, and voilà! Your dishwasher will take care of the rest.
But to fully benefit from this modern marvel, you need to ensure it's properly hooked up to your home’s water line. Whether you're a seasoned DIY enthusiast or a first-time installer, understanding how to connect dishwasher water line is essential.
In this guide, we’ll walk you through the process step-by-step, ensuring a smooth and hassle-free installation.
Step 1: Gathering the required tool
Before you start connecting your dishwasher to the water line, ensure you have all the necessary tools ready. Typically, these include an adjustable wrench, a pair of pliers, a 3/4 by 3/8 inch hose fitting, and a screwdriver.
Step 2: Shut off the water supply and disconnect the power
Turn off the main water supply to ensure an easier and stress-free installation. Locate the shut-off valve, usually found under your kitchen sink, and turn it clockwise until it is fully closed.
Additionally, disconnect the dishwasher from its power source to prevent the risk of electric shock, which can be fatal.
Step 3: Connect hose fittings
The next crucial step is installing the 3/4 by 3/8 inch hose fittings, the standard for dishwashers. Begin by removing the dishwasher from the cabinet and locating the hot water supply pipe, typically a copper pipe extending just below the sink.
If the copper pipe has a valve, use an adjustable wrench and pliers to remove it. Clean the hot water copper tube with a cloth to eliminate dirt or debris that might obstruct water flow.
After cleaning, reinstall the valve and connect the hose fittings. For added flexibility, you can attach an additional pipe to the copper pipe.
Step 4: Install the nut and ferrule
Before installing the 3/8-inch hose fitting, gently slide a nut and ferrule onto the copper pipe. Begin by placing the nut, followed by the ferrule, approximately 2.5 cm into the pipe.
Ensure that water does not come into contact with the dishwasher's base frame or motor to prevent vibrations during operation.
Step 5: Insert the water supply line
Carefully insert the water supply line into the standard 3/8 inch compression fitting, ensuring it goes in as deeply as possible to prevent any leaks. Simultaneously, make sure the 3/4 inch hose is oriented upwards.
Insert the rubber washer onto the 3/4-inch hose fitting without using Teflon tape, as it can loosen the compression fitting and lead to leaks. Secure the nut and ferrule by turning them clockwise until they fit snugly into the 3/8-inch compression threads.
Use an adjustable wrench to tighten the nut firmly, remembering that copper tubing can easily kink or bend, so gentle tightening is crucial.
Step 6: Align the hose fitting with the dishwasher valve
Position the 3/4 hose fitting to align with the dishwasher valve. Avoid using an adjustable wrench to tighten the coupling; hand-tighten instead to prevent cross-threading.
Verify the coupling's tightness with pliers. If it remains loose, adjust it slightly with pliers until the rubber gasket is fully sealed to prevent leaks. Avoid over-tightening to avoid damaging the threads and causing leaks. Be gentle when securing the connectors.
Step 7: Test if the installation is watertight
To check for water-tightness, position a paper towel beneath the 3/4 by 3/8 inch hose fitting and observe for any signs of leakage. If leakage occurs, re-tighten both the 3/4 and 3/8 hose fittings until no leaks are present.
Step 8: Create an air gap
Certain local plumbing regulations might necessitate the installation of an air gap between the dishwasher's drain hose and the sink drain or garbage disposal.
To comply, fit an air gap device above the sink's surface and attach the drain hose to it. Verify your local plumbing codes to confirm if an air gap installation is mandatory.
Step 9: Turn on the water supply
With everything securely connected, open the main water supply valve under the sink. Slowly turn it counterclockwise until it is fully open, allowing water to flow to the dishwasher.
Step 10: Test the connections
Before starting a full cycle, it’s essential to test the water and drain hose connections for any leaks. Run a short dishwasher program or cycle to check for any signs of water leakage around the appliance, water supply line, and drain line.
