How To Run A Refrigerator Water Line For A Kitchen Over A Basement

You're nearly done with your kitchen remodel and have one last important yet somewhat annoying step: running a water line for your refrigerator. The water line is vital for operating any in-fridge water and ice systems. An existing line might not be present if your house had never previously had a fridge with those systems.

Luckily, if your kitchen is right over the basement, running a water line is a relatively easy if you have a bit of do-it-yourself plumbing experience. If you lack that experience, it's best to leave this project up to a plumbing contractor to avoid flooding your basement. The project is easier if you use PEX piping, which is a flexible and cheaper alternative to copper piping.

Things You Need:

  • PEX piping
  • Tee crimp fitting  
  • Crimp tool
  • Tube talon
  • Crimp rings
  • Drill
  • Quarter-turn valve

Step 1: Begin the Pipe Work

Turn off the main water supply to your home.

Start the pipe work by finding the nearest cold water line to where you want your refrigerator. This might mean pipes running into the basement from under the sink or the pipes for your main water supply. Once you've found this, you need to remove a piece of this pipe and replace it with a tee crimp fitting that will allow you to attach your first segment of PEX pipe.

Use the crimp tool to tighten the edges of the crimp fitting around the length of PEX pipe. Secure the pipe to the neighboring joists using a tube talon.

Continue running the pipe through your basement, supporting the pipes with another talon at least every 32 inches. Stop when you've reached the point where the PEX will need to go up through your kitchen floor.

Step 2: Run Line Through Floor

Measure a circle on your kitchen floor near the wall where the refrigerator should be. You want the circle to be slightly larger than the diameter of the PEX to allow the pipe to pass through easily but not dangle loosely. Use your drill to cut out the hole.

Run the PEX up through the hole. Attach a quarter-turn valve no more than a few inches above where the pipe comes through the hole so that you can easily turn off the water to make repairs. Run the rest of the pipe needed from the valve and up to the refrigerator hookup. Leave some extra pipe slack so that you can move the refrigerator around a bit if you want.

For more information, or if you would like professional assistance, contact Joe Klosterman Plumbing or a similar company.


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