Ice maker, fridge and washer water lines

Small lines, big leaks

Appliance water lines run behind machines where nobody looks. A cracked plastic fridge line or a burst rubber washer hose can release a lot of water before anyone notices. The fix is usually simple: replace old plastic or rubber with braided stainless lines, and give each appliance its own quarter-turn shutoff.

Refrigerator and ice maker lines

Many older ice maker lines are thin plastic or copper tubing fed by a saddle valve clamped onto a cold pipe. Saddle valves leak over time. We replace them with a proper shutoff where the supply allows, and run a braided line to the fridge with enough slack for pulling the fridge out. We check the connection at the fridge inlet valve and flush the line before connecting a new filter.

Washer hoses and boxes

Rubber washer hoses become brittle with age and heat. Braided hoses are more burst-resistant. We replace hoses, rebuild or replace leaking washer valves in the wall box, and check that the drain hose is secured in the standpipe so it cannot pop out during a spin.

Signs of trouble

• Water on the floor near the fridge or washer.
• Ice maker making small or hollow cubes, or none.
• Clicking from the fridge water valve.
• Washer filling slowly.
• Swelling or soft spots in the floor near the machine.

What is outside our scope

Running a new water line to a fridge across the house, moving a laundry box, and repairs inside the appliance are outside our scope.

Checking a line after it is reconnected

After a refrigerator line is reconnected, run the water dispenser for a few minutes to push out air and loose particles, and throw away the first batches of ice. Wipe the fitting at the wall and at the back of the fridge with a dry paper towel later that day and again the next morning; a slow weep shows as a damp spot long before it makes a puddle. When pushing the fridge back, leave a loose loop of line behind it rather than a kink.

Choosing the right line

Fridge lines come in braided stainless with fittings on both ends, in PEX, and in copper or plastic tubing. Braided lines with factory crimped ends are the most forgiving: they flex when the fridge moves and the connections are not field-made. Measure from the shutoff to the fridge inlet and add enough slack to pull the fridge out about two feet for cleaning.

Copper tubing works but kinks if bent too tight and can work-harden and crack if the fridge is moved often. Thin plastic tubing becomes brittle and is the line we replace most.

Washer hoses come in standard lengths with female hose threads on both ends. Use new rubber washers in each end, and do not overtighten; a snug turn past hand tight is enough. Many makers recommend periodic hose replacement in their manuals, so check yours.

Washer drain and the standpipe

A washer drain hose hooked loosely over a laundry sink can whip out during a spin. A standpipe with the hose secured by a clip or strap, at the height the washer maker lists, prevents that. A standpipe that overflows during the drain cycle can mean a partial clog in the line below it, often from lint. We clear the trap and accessible line.

Leak sensors and auto-shutoffs

Battery water sensors placed on the floor behind the fridge, washer, water heater and under sinks sound an alarm or send a phone notice when they get wet. Some washer hose kits include automatic shutoff valves that close if a hose bursts. They are inexpensive extras that can save a floor, and we can place them while the appliance is out.

Why it matters

EPA WaterSense lists leaking valves among the common household leaks and says that "the average household's leaks can account for more than 9,300 gallons of water wasted every year." Appliance lines that drip behind machines are among the hardest to notice.

What to send

A photo behind the appliance showing the line and valve, and the appliance brand and model. If the floor is wet or soft, a photo of that too.

More questions about appliance lines

Why does my fridge water taste odd after a line change? New lines and filters can leave air and a plastic taste for the first few gallons. Run several glasses of water through the dispenser and discard the first batches of ice.

Can the fridge line come off the kitchen sink supply? Often, yes. A dual-outlet stop under the sink can feed both the faucet and a line to the fridge when the fridge is close by.

Is a washer pan worth it? On second floors or over finished rooms, a pan with a drain connection catches small leaks. Without a drain, a pan only holds a small amount, so pair it with a water sensor.

What about the dishwasher line? The same rule applies: a braided line on a working stop. We check it whenever the sink cabinet is open.

Before we arrive

Empty the bottom shelf of the fridge door if it holds heavy jars, clear a path to pull the fridge forward, and move items stored on top of the washer. If the floor behind the appliance is wet, leave the area open to dry and send a photo so we can judge whether the subfloor needs attention too.