Does the water line connected to a refrigerator have to be a copper line?

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Does the water line connected to a refrigerator have to be a copper line?

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no! Refrigerator icemaker lines can be run in either copper or plastic. Good luck, Tom

Like Tom said, it can be copper tubing, plastic tubing or it can even be a special SS braided hose specifically made for ice maker hook ups (sold at all home improvement stores nowadays)... ;)

Mark