The tools necessary for installing a refrigerator water line are a tape measure, soldering torch and tube cutter. A drill and 1/2-inch drill bit may be necessary for running the water line through cabinets.
Other materials required for the project are 1/4-inch flexible copper tubing, a 1/2-inch copper pipe, a copper tee and a water supply stop valve. Use a steel or plastic tee if the pipes are made of either of these materials. Completing the project requires tapping into the water pipe and adding copper tubing to the refrigerator. The project takes about one day to complete and is of moderate difficulty, according to The Family Handyman.