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Q: Hook up water line for your refrigerator.

I was advised from the local hardware store guy to go with the clamp and hose kit to install a water line for my frig. I am pretty good at handling these things on my own, i just wanted to know if this is the best way to go. The clamp has a self piercing screw and it looks like you just tighten down on the clamp (after you have turned off your main of course). Run my line and connect to my frig. But here the tricky part. How do I know witch copper line is my cold water line (do I follow it to the sink? or turn on the hot water for a while before I shut off my main?).

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  • A: How to add a water line to your refrigerator



    Hi Sean -- it sounds like you are on the right track. I usually run the hot water to feel which pipe gets hot. The cold water line will also usually have either condensation, or green patina from years of condensation. Also-- water supply lines are usually 1/2 inch diameter -- they are usually smaller than the heating supply lines.

    Personally I prefer to add a 1/2 inch inlet, 3/8 outlet valve, added onto a sweated copper "T" and run flexible copper line to the refrigerator.. it is just more durable.

    A note on the unions that are with the refrigerator kit--

    don t over tighten the unions, they will deform, and be unusable to take apart for maintenance. This also may cause them to leak. Snug them up then look for drips, if you get a drip, give them a 1/4 turn, and thats all you need.

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    Jul 6, 2022

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