The supply hoses behind a washing machine carry hot and cold water from the wall valves into the machine. Most St. Louis homes have two of them, one marked hot and one marked cold. They sit in a tight space, they are rarely looked at, and when one fails it can release a lot of water into a laundry closet, a basement, or the floor below. A few minutes of checking now is cheaper in time and cleanup than a flooded room later.
Know what kind of hose you have
Older installations often use plain rubber hoses. Many newer ones use braided stainless steel sleeves over an inner hose. Rubber tends to bulge, crack, or go stiff with age. Braided hoses can fail at the fittings or where the braid has been kinked or rubbed against a wall or a machine foot. Either type can drip, so the inspection is the same. Look at the whole length, not just the ends.
Shut off the water first
Before you pull the machine out from the wall, turn off both supply valves. Turn each one clockwise until it stops. If a valve is stiff, does not close fully, or drips at the stem when you turn it, note that. A valve that will not shut off is a separate problem, and you should not try to force it. If you cannot close a valve at all, shut the main water supply for the house and call a licensed plumber before you go further.
Once the valves are closed, unplug the machine, then slide it out slowly so you do not pull on the hoses. Keep a towel and a flat pan under the connections in case a little water is still in the lines.
What to look for
- Bulges or soft spots along the hose, especially near the ends.
- Cracks, splits, or a chalky, hardened outer surface on rubber hoses.
- Fraying, flattened spots, or cut braid on stainless sleeves.
- Crusty white or gray buildup at the fittings, which can mark a slow seep over time.
- Rust, green corrosion, or staining on the valve body or the wall behind the connection.
- Dampness on the floor, the back panel, or the wall after a load of laundry.
Dry the connections with a paper towel, then turn the water back on briefly with the machine ready to fill. Watch the joints for a few minutes and check the towel. A drip you cannot see by eye often shows up as a damp spot on the paper.
Look at the date and the kink points
Some hoses have a printed date stamp near the fitting. If the date is old or missing, treat the hose as due for review even if it looks fine. Also check how the hose bends. A hose pinched behind a machine or bent sharply at the valve will wear faster and may split at that point. A longer or better-routed hose can relieve that stress.
Replacing a hose
Replacement is usually straightforward, but take care with each step. Buy hoses that match the connection type on your machine and your valves. Hand tighten each fitting first, then snug it with a wrench only until it stops. Do not overtighten, since that can crack plastic fittings or damage the washer seal inside the joint. Replace the rubber washers that come with the hoses rather than reusing old ones.
Turn the water back on slowly, then check each joint for drips before you run a full load. Leave the machine pulled out for a short test cycle so you can watch the connections while it fills and drains.
When to call for help
If a valve is leaking at the stem, will not close, or sits inside a wall that is damp or stained, a licensed plumber in the St. Louis area can assess the valve, the supply line, and any damage behind the wall. Water that has soaked into drywall, subfloor, or flooring should be dried and checked, since hidden moisture can spread quietly. If you find active leaking after you have shut the valves, keep the house main shut off until the problem is handled.
A regular look at these hoses takes only a few minutes, and it gives you a clear record of what condition they are in. That makes the next decision, whether to replace now or check again later, much easier.