Installing a dishwasher and refrigerator hookups

Now let’s move on to installing dishwasher and refrigerator hookups. Click Here for DIY repairs. We’ve already learned how to take the dishwasher waste water outlet hose and connect it to the sink drainage assembly.

Now we just need to hook up the hot water and the electricity. It’s much easier if the dishwasher is close to the sink.

If you’re building your house new, then you will have a dishwasher line already run. If you’re adding a dishwasher to a kitchen without that extra hot water line, you can simply put a T-fitting in the sink hot line as shown in the photo below.

installing dishwasher

Connect it to the intake valve as shown. The dishwasher will need it’s own dedicated 120-volt, 20-amp circuit, so it won’t have an outlet or a plug.

It is going to be hard-wired, but it’s really easy. First, remember to shut the power off before doing any electrical work. You’ll have to remove the panel on the dishwasher electric box.

From there you just connect the black wire from the dishwasher to the black wire from the dedicated circuit run. Do the same with the white wire. Connect the green wire to the ground screw on the dishwasher.

dishwasher wiring diagram

Now let’s learn how to splice into a waterline to supply water to a refrigerator for the icemaker and water through the door.

The modern refrigerators just have one line going to both the water through the door and the icemaker. It is done by putting a saddle valve onto an available cold water line.

As you can see in the picture above, you puncture the waterline by turning the saddle valve until it breaks through. It makes a watertight seal and a new waterline at the same time.

The other end just screws onto the refrigerator intake valve. You can use either copper tubing or plastic. They both work the same way.

Next, oven-range wiring

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