Hook up automatic ice maker

Many plumbing codes and inspectors frown on those devices. Some refrigerator manufacturers also state in their installation instructions not to use them. It is not uncommon for those tiny valves to deliver inadequate water supply to the ice maker.

3 Ways to Install an Ice Maker - wikiHow

This causes all sorts of problems and headaches. In my opinion the best way to install an ice maker supply line is to treat it like any other fixture branch. Install a standard tee fitting and a ball valve that will allow you to shut off the water supply to the ice maker without disrupting water to any other fixture in the house.


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Ball valves are superior shut off valves. They have a stainless steel ball inside the valve body that has a one half inch hole drilled through its center.

Expert Advice For Your Home

When you rotate the valve handle 90 degrees to the full open position, the water flows through the valve unobstructed. There are no washers to replace. Most water supply lines in a typical home are one half inch in size. The ice makers typically require a small soft copper water supply tube whose outer diameter is only one quarter inch. You can buy a brass reducing fitting that will solder onto the one half inch pipe leaving the ball valve and uses either a compression or flare fitting to adapt the smaller one quarter inch tubing to the one half inch pipe.

These fittings are readily available at plumbing supply stores, hardware stores, or home centers. I have also heard that hot water freezes faster than cold water. But I have always doubted it to be true. So I ran a controlled experiment on your behalf. I filled three identical glasses with three ounces of water.

How to Hook Up a Water Line to a Refrigerator From the Sink

One glass had cold tap water, the other had room temperature water and the final glass had steaming hot tap water. The cold tap water and the room temperature water froze at virtually the same time. The hot water was very cold but not yet frozen. However, I wanted to point out that this urban legend is indeed derived from fact. If one were to boil water and let it cool back to room temperature, and then put it in the freezer at the same time as room-temp water fresh from the tap, the boiled water would indeed freeze first. This is because in the process of boiling, you are evolving a lot of air out of the water.

So, the boiled water, which has less air in it, freezes faster. It is really a moot point. Even if you do connect the ice maker supply line to a hot water line, the hot water would never make it to the cube tray. The volume of water inside the coiled length of one quarter inch tubing behind or under the refrigerator has been at room temperature for hours.

How to Hook Up a Water Filter to an Ice Maker

You'll want to use water lines that are already in place if possible, rather than attempting to install new pipes. Drill a hole either through the cabinet wall separating the space under the sink and the refrigerator or in the basement ceiling up to the refrigerator. Thread copper tubing through the hole you just drilled.

Attach one end of the copper tubing to the refrigerator's water pipe, using a nut and ferrule. Make sure you leave extra tubing coiled behind the refrigerator, so you can move the refrigerator when necessary.

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Cut the cold water line under the sink or in the basement and attach a copper T-fitting. Attach a water valve to the T-fitting.

How to Connect an Ice Maker Like a Pro

This will control the water flow and water pressure to the refrigerator. Be sure to put a gasket seal between the valve and the T-fitting.

Attach the free end of the copper tubing to the valve. Now the refrigerator is connected.