--- title: "Supply hoses and slow leaks: the lines that feed four appliances" description: "A fill hose gives no warning when it lets go, but it usually shows wear for months first. What to look at, when to replace it, and what to do the day one drips." url: "https://appliancemaintenance.center/guides/supply-hoses-and-slow-leaks/" date_modified: "2026-09-26" --- Fire, gas and water safety # Supply hoses and slow leaks: the lines that feed four appliances Appliance water supply hoses feed the laundry machine, the dish care machine and any refrigerator or ice maker with a water line, and all of them stay under house pressure around the clock. Check them monthly, replace laundry fill hoses every five years with new ones, avoid plastic tubing and self-piercing valves, and close the supply valve the moment one drips. By [ApplianceMaintenance.center technical team](https://appliancemaintenance.center/authors/technical-team/) Published September 26, 2026 ## At a glance. A fill hose sits at full house pressure every hour of every day, whether or not the machine is running. Most give plenty of warning before they fail, in the form of a bulge, a crack at the crimp or a damp ring on the floor, but only to someone who looks. Read the whole guide ### Laundry fill hoses Replaced every five years GE and Speed Queen, even when they look sound. ### Monthly look Every hose and the drain Speed Queen's monthly maintenance item. ### Never reused Old hoses on a new machine LG warns they can leak or burst. ### Drying after a leak Within 24 to 48 hours EPA's window for keeping mold from growing. In this guide 1. The lines that stay under pressure all day 2. What the monthly look should find 3. Replacing laundry fill hoses on a five-year clock 4. The dish care and cold storage lines 5. Habits that keep a small leak small 6. Step by step 7. Questions ## The lines that stay under pressure all day A typical home has four or five appliance water supply hoses: a hot and a cold fill hose behind the laundry machine, one line under the sink to the dish care machine, and a small line to any refrigerator or ice maker that makes its own ice. Homes with a plumbed coffee system or steam oven add another. None of them are shut off between uses unless someone closes the valve, so each one holds the full pressure of the house supply the whole time. That pressure is higher than many owners expect. Whirlpool's refrigerators, for example, are built to take between 30 and 120 psi at the connection. A hose rated for that range is fine when new; the question is what years of heat, flexing and pressure have done to it. ### Why the laundry hoses usually go first Speed Queen's maintenance section singles out its fill hoses for the temperature and constant high pressure they carry. The hot hose sees heat on top of pressure, and both hoses flex slightly every time the machine spins and walks. A dish care line is short and sits still in a cabinet, while a refrigerator line is small and carries cold water, so both tend to outlast the laundry pair. Source: [Whirlpool — Ensuring correct water pressure (refrigerators)](https://producthelp.whirlpool.com/Refrigeration/Full-Size_Refrigerators/Product_Info/Tips_and_Tricks/Ensuring_Correct_Water_Pressure) — Refrigerators operate on 30–120 psi at the connection; check for kinks in the supply line after the refrigerator was moved ## What the monthly look should find Speed Queen puts a check of all hoses and the drain for leaks on its monthly list, and says any hose showing deterioration should be replaced at once. The look takes two minutes with a flashlight. Run a dry hand along each hose where it can be reached, and pay most attention to the ends, where the rubber meets the metal collar and bends hardest. - Any swelling that makes one stretch of hose fatter than the rest - Fine surface cracks in the rubber, worst where it enters the metal collar - Rust or green corrosion on a coupling or valve - A sharp bend left behind when the machine went back against the wall - Dampness, a white mineral crust or a stain on the floor below a connection ### Leaks that stay hidden Some lines cannot be seen without moving the appliance. The dish care connection sits behind the kick plate and the refrigerator line coils behind the cabinet, so a slow drip there can soak a subfloor for weeks. EPA's WaterSense program notes that leak detection and flow monitoring devices can alert a household to irregular water use and reduce the damage a leak does; a small sensor on the floor under each appliance is the simplest version. Source: [Alliance Laundry Systems (Speed Queen) — User's Guide for Frontload Washers, 808187](https://docs.alliancelaundry.com/tech_pdf/Production/808187en.pdf) — Hoses face temperature and constant high pressure; check them monthly and replace any showing deterioration; replace every five years with the maker's hoses; flood-safe hoses not recommended; close valves at the end of each wash day; run hot faucets after two weeks unused because of hydrogen gas Close on a bulging rubber washer supply hose beside its valve. ## Replacing laundry fill hoses on a five-year clock GE and Speed Queen both recommend replacing fill hoses every five years, and GE lists that interval in the same article as its stainless steel hoses, so braiding does not exempt a hose. GE also notes that since August 2010 most of its laundry machines have shipped without fill hoses, which means the hoses in many homes are whatever the installer brought. If nobody knows their age, the safe assumption is that they are due. LG's instructions say to use new hoses with every installation and never reuse old ones, which can leak or burst. Tighten each coupling by hand and then give it a further two-thirds of a turn with pliers, as LG directs; over-tightening or cross-threading damages the valve or the coupling and causes the very leak it was meant to prevent. ### Hoses with automatic shutoffs It seems sensible to buy a hose that closes itself if it bursts. LG says not to use flood-preventing hoses with automatic shutoff devices, because they can trip during a normal fill and stop the machine from filling. Speed Queen says the same kind of hose often causes slow or no fill and recommends only the maker's replacement hoses. GE likewise does not recommend check valves in the line. Source: [Alliance Laundry Systems (Speed Queen) — User's Guide for Frontload Washers, 808187](https://docs.alliancelaundry.com/tech_pdf/Production/808187en.pdf) — Hoses face temperature and constant high pressure; check them monthly and replace any showing deterioration; replace every five years with the maker's hoses; flood-safe hoses not recommended; close valves at the end of each wash day; run hot faucets after two weeks unused because of hydrogen gas; [GE Appliances — Washer inlet fill hoses](https://products.geappliances.com/appliance/gea-support-search-content?contentId=22658) — Replace hoses every 5 years, stainless models included; hoses not included with most GE washers since August 2010; check valves not recommended; [LG Electronics — Washer owner's manual (WM4080)](https://media.us.lg.com/m/12df7154cf356724/original/WM4080_2023_Owners-Manual_Washer_Eng.pdf) — Use new hoses, never reuse old ones; hand-tight then 2/3 turn with pliers; no flood-preventing hoses with auto shutoff; turn off faucets and unplug for vacations; do not touch a product in standing water ## The dish care and cold storage lines Whirlpool wants its dish care machines fed from a hot water line with its own shutoff valve, through copper tubing with a compression fitting or a flexible braided line, and says plastic tubing is not recommended. After connecting, the valve is opened and the joints watched for leaks. The same rule of firm but not forced applies: a wrench makes the joint secure, and too much force cracks the fitting. Refrigerator and ice maker lines are smaller but just as permanent. Sub-Zero asks for an easily accessible shutoff valve supplied by the plumber and warns against self-piercing valves, which do not deliver enough flow. Whirlpool reminds owners to check for kinks in the line after a refrigerator has been moved, since a pinched line both restricts water and strains its fittings. - Braided stainless or copper to the dish care machine, never plastic - Copper or the maker's specified tubing to cold storage, with its own valve - No self-piercing or saddle-type taps on any appliance line - Slack left in each line so the appliance can come forward without pulling it Source: [Whirlpool — Ensuring correct water pressure (refrigerators)](https://producthelp.whirlpool.com/Refrigeration/Full-Size_Refrigerators/Product_Info/Tips_and_Tricks/Ensuring_Correct_Water_Pressure) — Refrigerators operate on 30–120 psi at the connection; check for kinks in the supply line after the refrigerator was moved; [Whirlpool — Connecting a dishwasher to the water supply](https://producthelp.whirlpool.com/Dishwashers/Product_Info/Dishwasher_Installation_Support/Dishwasher_Water_Supply_Connection) — Hot water line with a dedicated shutoff; copper with compression fitting or braided line; plastic not recommended; do not over-tighten; check for leaks after opening the valve; [Sub-Zero — Water line saddle valve](https://www.subzero-wolf.com/assistance/answers/sub-zero/common/water-line-saddle-valve) — Connect through an easily accessible shutoff valve supplied by the plumber; do not use self-piercing valves ## Habits that keep a small leak small Speed Queen tells owners to close the laundry shutoff valves at the end of each wash day, which removes pressure from the hoses for most of the week. LG asks for the faucets to be turned off and the machine unplugged before a vacation. Speed Queen adds an unusual warning for homes where the hot water has not been used for two weeks or more: hydrogen gas can collect in the system, so run every hot faucet for several minutes before starting a load, and keep flames and sparks away. Source: [Alliance Laundry Systems (Speed Queen) — User's Guide for Frontload Washers, 808187](https://docs.alliancelaundry.com/tech_pdf/Production/808187en.pdf) — Hoses face temperature and constant high pressure; check them monthly and replace any showing deterioration; replace every five years with the maker's hoses; flood-safe hoses not recommended; close valves at the end of each wash day; run hot faucets after two weeks unused because of hydrogen gas; [LG Electronics — Washer owner's manual (WM4080)](https://media.us.lg.com/m/12df7154cf356724/original/WM4080_2023_Owners-Manual_Washer_Eng.pdf) — Use new hoses, never reuse old ones; hand-tight then 2/3 turn with pliers; no flood-preventing hoses with auto shutoff; turn off faucets and unplug for vacations; do not touch a product in standing water; [EPA — A brief guide to mold, moisture and your home](https://www.epa.gov/mold/brief-guide-mold-moisture-and-your-home) — Dry water-damaged areas and items within 24–48 hours to prevent mold growth ## Where to stop If a hose is dripping, spraying or bulging, close its supply valve, keep clear of outlets and cords in the wet area, and switch off the circuit at a panel you can reach from dry ground. LG warns not to touch an appliance that is sitting in standing water. Dry soaked floors and cabinets within EPA's 24 to 48 hours, and book a visit for any leak inside a cabinet, a corroded valve that will not close, or a line that runs inside a wall. Written by [ApplianceMaintenance.center technical team](https://appliancemaintenance.center/authors/technical-team/). Technicians who clean and check household appliances, writing from home visits, service records and each maker's care chapter. Sources: [Whirlpool — Ensuring correct water pressure (refrigerators)](https://producthelp.whirlpool.com/Refrigeration/Full-Size_Refrigerators/Product_Info/Tips_and_Tricks/Ensuring_Correct_Water_Pressure) · [Alliance Laundry Systems (Speed Queen) — User's Guide for Frontload Washers, 808187](https://docs.alliancelaundry.com/tech_pdf/Production/808187en.pdf) · [EPA WaterSense — Fix a Leak Week](https://www.epa.gov/watersense/fix-leak-week) · [GE Appliances — Washer inlet fill hoses](https://products.geappliances.com/appliance/gea-support-search-content?contentId=22658) · [LG Electronics — Washer owner's manual (WM4080)](https://media.us.lg.com/m/12df7154cf356724/original/WM4080_2023_Owners-Manual_Washer_Eng.pdf) · [Whirlpool — Connecting a dishwasher to the water supply](https://producthelp.whirlpool.com/Dishwashers/Product_Info/Dishwasher_Installation_Support/Dishwasher_Water_Supply_Connection) · [Sub-Zero — Water line saddle valve](https://www.subzero-wolf.com/assistance/answers/sub-zero/common/water-line-saddle-valve) · [EPA — A brief guide to mold, moisture and your home](https://www.epa.gov/mold/brief-guide-mold-moisture-and-your-home) ## Step by step. Four steps, in the order worth doing them. 01 ### Close both valves Turn the hot and cold laundry valves off and unplug the machine before touching the hoses. 02 ### Drain and remove Put a towel and a shallow pan under the connections, then unscrew the old hoses from the valves and the machine. 03 ### Fit new hoses Install the maker's hoses with new washers seated flat, hand-tight plus the turn the manual gives. 04 ### Test under pressure Open the valves slowly, run a short fill and check every coupling with a dry tissue before pushing the machine back. For the heart of your home. ## Questions owners ask. ### Are braided stainless hoses permanent? No. GE recommends replacing fill hoses every five years in the same article that lists its stainless models, so braiding changes how a hose fails, not when it is due. ### Can old hoses go on a new laundry machine? LG says to use new hoses and never reuse old ones, which could leak or burst. Replace them at installation and note the date. ### Is a saddle valve acceptable on a cold storage water line? Sub-Zero warns against self-piercing valves because they do not deliver enough water flow, and asks for a proper shutoff valve fitted by the plumber. ### Should the laundry valves really be closed after every wash day? Speed Queen recommends it. With the valves closed, the hoses sit unpressurized between wash days, and a hose that gives way then leaks only what it holds. ## The problems behind it. Each has a page of its own: what it usually means and the causes in the order worth checking. [All 17 problems](https://appliancemaintenance.center/problems/) Fire, gas, water or wiring risk ### Supply Hose Leaking or Bulging Behind an Appliance: Shut the Water Off 6 causes, cheapest first Problem ### Water or Ice Tasting Stale: Filter Age, Scale and Idle Lines 6 causes, cheapest first Fire, gas, water or wiring risk ### Appliance Tripping the Breaker Every Time It Runs 5 causes, cheapest first ## When it needs a technician. The services on the right are where this guide ends when the checks do not settle it. ### Whole-home maintenance visit One unhurried pass through every appliance in the house, with a written log of what each one needs next. ### Water filter and descaling service Fresh filters in dispensers and ice makers, and scale cleared from steam ovens, ice makers and dish care machines. ### Annual maintenance plan Scheduled upkeep visits for every appliance in the home, spread across the year, with one running service log. ## More in fire, gas and water safety. The hazards that routine upkeep exists to prevent: lint packed into an exhaust run, a gas smell at a cooking appliance, carbon monoxide, a supply hose that bursts, and the burning smell or tripping breaker that means stop. [The whole section](https://appliancemaintenance.center/guides/safety-and-food/) Lint fires, gas at the burners, hoses and wiring ### Lint, exhaust runs and fire risk behind the laundry closet The screen catches most of the lint and the duct collects the rest. How long a run may be, what it should be made of, and how to tell it is choking before it overheats. Lint fires, gas at the burners, hoses and wiring ### Gas burners and carbon monoxide: flame, air and the alarm A clean, well-adjusted burner makes little carbon monoxide and a neglected one makes more. The flame colors to know, the alarms to install and the jobs an owner leaves alone. Guides ### All 18 guides Six sections, by what you are trying to find out. --- **[Read on the site: Supply hoses and slow leaks: the lines that feed four appliances](https://appliancemaintenance.center/guides/supply-hoses-and-slow-leaks/)** **[Book a visit with ApplianceMaintenance.center](https://appliancemaintenance.center/schedule/)**