A person filling up their water bottle from the fridge

5 easy steps to install a refrigerator water line

By installing a water line in your refrigerator, you gain access to popular features, like a water dispenser or ice maker. Read this step-by-step guide to install a water line to your fridge and enjoy refreshment and convenience whenever you want. To learn model-specific instructions for your refrigerator, consult your appliance’s installation instructions.

How to connect a water line to your refrigerator

Remember, this is a general overview covering how to install a refrigerator water line, meaning different units may require different steps or supplies. Always review your model’s specific installation instructions for detailed information. Keep reading to learn the steps to connect a kitchen water supply line to the water line inlet on the back of your fridge.

IMPORTANT: Plumbing must always be installed in accordance with the International Plumbing Code and any local ordinances and codes.

Tools
  • Flat-blade screwdriver

  • ¼" nut driver

  • 2 adjustable wrenches

Supplies
  • Tee fitting

  • ¼-inch copper water supply tubing

A person turning off a water valve

1. Shut off the water supply

First, unplug the fridge’s power supply. Then, inspect behind the fridge to see if a water line and a water supply valve are present. If not, you can connect the water line to the water supply underneath the sink, turning it clockwise to shut it off. Before doing anything else, let the remaining water flush from the line by turning on your faucet until the water drains completely.

A person tightening a water valve

2. Connect the tubing to the water supply

Using a ¼" soft copper tubing, ensuring you have the proper length, cut both ends square and slide the compression sleeve and nut onto the tubing. Next, insert the tubing’s end into the water supply outlet as far as it can go. Now it’s time to use an adjustable wrench to screw the compression nut onto the outlet.

A tube in a bucket

3. Flush out the tubing

Put the other end of the tubing into a sink or small bucket, and then turn on the water supply. To help prevent a water valve malfunction, let the water flush through the tubing until it is clear. After it’s done, the last two steps are to turn off the water supply and bend the tubing to meet the water line inlet on the back of the fridge cabinet.

A person connecting the water supply tubing to the refrigerator

4. Connect the water supply tubing to the unit

Reach behind the unit to remove the short, black plastic piece from the end of the water line inlet and connect the water line tubing. Then, use a wrench to tighten the nut securely into place, without over-tightening it. Next, install a water supply tube clamp around the water supply line, as this will reduce strain on the coupling.

A water supply valve

5. Turn on the water supply

Find the water supply valve, which is typically under the sink, and then re-activate it by twisting it counterclockwise. Inspect for leaks at each of the tubing’s connection points and tighten the connections accordingly, if needed. After confirming there are no leaks, slide the unit back into place and then reconnect its power supply.

How difficult is it to install a refrigerator water line?

While difficulty levels may vary, installing a refrigerator water line can be an easy task that doesn’t always require professional help, depending on your skill level. That said, if the line needs to extend over a long distance or through floors and walls, or if other issues arise, it’s recommended to hire a plumber.

What size line should I use when installing a refrigerator water line?

When installing a new refrigerator, the tubing to connect the water supply to your model should have a ¼-inch diameter. This will allow the tubing to properly connect to the unit’s supply fitting.

Are the refrigerator ice maker line and the water line the same?

Sometimes, the water line can be referred to as the refrigerator ice maker line. These terms are often used interchangeably in reference to the water dispenser and the valve that dispenses water into your ice maker.

Does a refrigerator need a water line to dispense ice or water?

A water line is needed to dispense ice or water. That said, a refrigerator does not require a water line if it doesn’t have an ice or water dispenser. If you don’t connect your refrigerator to a water line, you will have to make ice manually using an ice cube tray filled with water and placing it in your freezer.

Tips for installing a refrigerator water line:

Here are some additional tips for installing a refrigerator water line.

  • Copper tubing can help prevent an odd taste and odour in water and ice.

  • Only install tubing in areas where temperatures can be maintained above freezing.

  • Flush out several gallons of water to clear the line of any residual contaminants and air.

  • Throw away the first two batches of ice from your ice maker.

To help ensure your drinking water is fresh and fresh-tasting, it’s also recommended to change your refrigerator's water filter every six months.

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