APPLIANCE LEAK

Appliance Leak Water Damage: Which Appliance, and What Now

Six household appliances cause most of the appliance water damage Prime sees in Macomb and Oakland County, and they fail the same way more often than people expect: a flexible supply line, a shutoff valve nobody checked, and a leak that hid longer than anyone realized.

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Water pooled on hardwood flooring at the base of a refrigerator in a kitchen — Water pools under a refrigerator long before it reaches the open kitchen floor.

Do this now

6 steps to take in the first hour

Step1
Shut the water off at the appliance
Find the shutoff valve at the wall behind or under the appliance and turn it off. The main shutoff for the house works too if you cannot find it fast.
Step2
Cut power if water reached an outlet or cord
Unplug the appliance only if the cord and outlet are dry. If water is already touching an outlet or cord, shut off power at the breaker instead of reaching into the water.
Step3
Stop running the appliance and anything near it
Do not run another cycle to "see if it still leaks." Every cycle adds more water to a floor or cabinet that is already wet.
Step4
Photograph it before anything moves
Take dated photos of the water, the appliance, and the fitting or hose you think failed, before you pull the appliance out or mop anything up.
Step5
Note how long you think it was leaking
A puddle that appeared in an hour and a stain that has been there for weeks point to different causes and different claims. Write down what you actually saw.
Step6
Call Prime, not your agent, first
Prime documents the source and the spread with moisture readings before any cleanup starts. Call your carrier after the scope is written, not before.

What do I do when an appliance leaks, and does insurance cover it?

Shut the water off at the appliance, cut power only if the cord and outlet are dry, and stop running the appliance. Photograph the leak and the fitting or hose before anything moves, and note whether the water appeared suddenly or has clearly been there for a while. A homeowners policy commonly covers sudden and accidental water damage, such as a burst supply hose. A slow leak that ran for weeks before anyone noticed it is reviewed differently. The carrier decides, based on the facts of the loss.

Compare

Which appliance is actually leaking?

All six of these leaks can produce the same first sign: a wet floor, a soft cabinet, or a stain on a ceiling. Where they actually start, and how long they hide before anyone notices, is different for each one.

A sudden failure on a washing machine supply hose or a refrigerator fitting shows itself fast, because the line is under full house water pressure the whole time it runs. A slow failure on a dishwasher gasket, a water heater tank seam, or a condensate line can run for weeks inside a cabinet or a ceiling cavity before it reaches anywhere visible.

Where six common appliance leaks start, how long they typically hide, and what they damage first
Appliance	Where it leaks	How long it hides	What it damages first
Washing machine	The rubber supply hose behind the machine, or the drain hose at the standpipe	A burst supply hose shows in minutes; a worn door seal or loose drain hose can drip for weeks	The laundry room subfloor, then the ceiling in the room below
Dishwasher	The door gasket, the supply line fitting, or the base pan under the unit	Weeks to months, because the leak sits under the toe-kick where nobody looks	The cabinet base and the subfloor under the dishwasher
Refrigerator	The icemaker water line fitting behind or under the unit	Weeks, since the fridge sits flush against a wall and water runs along the floor out of sight	The kitchen flooring at the base of the refrigerator, then the subfloor
Water heater	A tank weeping from the bottom seam as it ages, not usually a sudden burst	Weeks, because a weeping tank keeps firing and drips continuously in a room few people check daily	The basement flooring and anything stored on the floor near the tank
Sink	The flexible supply line or the P-trap under the sink	Days to weeks, until the cabinet floor swells enough to notice	The cabinet floor under the sink, then the floor of the room below
AC or furnace condensate line	A clogged condensate drain line or a failed condensate pump near the air handler	Days to weeks, because it drips into a ceiling or floor cavity before any stain shows	The ceiling below an attic air handler, or the floor around a basement furnace

The pattern

What do all six of these leaks have in common?

Every one of the six appliances above connects to the house water supply through a flexible hose or line, and every one of those lines has a shutoff valve somewhere near it. The appliance almost never fails on its own. The connection to it does.

Age is the biggest factor across all six. Oatey's published guidance on washing machine hoses puts a typical rubber supply hose service life at roughly five to eight years, after which the rubber can crack or bulge without warning. The same clock runs on the fittings behind a refrigerator, under a dishwasher, and under a sink, even though nobody publishes a replacement schedule for most of them.

The shutoff valve is the other half of the pattern. Most homeowners can point to the appliance but not to the valve that controls its water, which is why the first minute after a leak is found is usually spent searching for a valve instead of turning it.

A flexible rubber or braided supply line, not the appliance housing, is where most of these leaks start.
A dedicated shutoff valve exists for nearly every one of these fixtures; most people have never located or turned it.
Rubber hoses age out over roughly five to eight years; braided stainless steel hoses resist the same bulging and cracking failure.

Split rubber supply hose spraying water behind a washing machine with water spreading across the laundry room floor — A split supply hose behind the washer runs at full line pressure, and the floor shows it within minutes.

Before it happens

Can a sensor or a shutoff valve catch this before it floods?

Two different categories of device exist for this, and they do different things. A point-of-use moisture sensor sits directly at one fixture, using electrodes that detect conductivity when water touches them, and it sends an alert when that happens. EPA's WaterSense guide specifically recommends placing one "behind a clothes washer or near a water heater," which are two of the six leak points on the table above, because both are hard to see and prone to exactly this kind of failure.

An in-line flow monitoring device works differently. It sits on the main water line or a branch line and watches how much water moves through it. Some are built with an automatic shut-off valve that closes the line on its own when it detects continuous flow or an abnormal pattern, instead of only sending an alert for a person to act on. EPA's guide names a failed water heater and a washing machine hose failure as its own examples of the kind of catastrophic leak an automatic shut-off valve is meant to stop.

Neither device replaces checking a supply line by hand. A point-of-use sensor only catches a leak at the fixture where it sits, and it will miss a leak anywhere else in the house. The guide also reports that one device maker found 60 percent of homeowners who installed a shutoff-capable flow monitor discovered a leak they did not know they had, which says as much about how often these leaks go unnoticed as it does about the device.

Point-of-use sensors: placed at one fixture (behind a washer, near a water heater, under a sink); alert only, in most models.
In-line flow monitors: placed on the main or a branch line; some add an automatic shut-off valve that closes on its own.
A sensor or shutoff valve is a prevention device. It does not repair, replace, or install the supply line, valve, or appliance itself.

We clean up and dry out what a leak already damaged, whether or not a device caught it first.

The claim

Does insurance cover an appliance leak?

A homeowners policy commonly covers sudden and accidental water damage, which is the category a burst washing machine hose or a cracked refrigerator fitting usually falls into. The carrier decides, based on the facts of the loss and the policy actually in force.

A leak that ran for weeks before anyone found it, such as a weeping water heater tank or a dishwasher gasket dripping behind a toe-kick, gets reviewed differently. Michigan's Department of Insurance and Financial Services (DIFS) publishes general guidance distinguishing sudden, accidental events from gradual damage that built up over time, and a carrier can treat the two differently even when the appliance and the water look the same by the time anyone sees them.

This is why noting how long a leak had likely been running, and photographing it before anything is moved, matters as much as the cleanup itself. Prime documents the source and the spread with moisture readings, which is the record a carrier works from either way.

Close-up of a dishwasher base pan and water supply line fitting with the toe-kick panel removed — Pulling the toe-kick panel shows the base pan and the supply fitting, the part of a dishwasher leak nobody sees from the kitchen floor.

What nobody else publishes

Why six different appliances fail the same two ways, and what catches it before the floor does

A washing machine, a dishwasher, a refrigerator, a water heater, a kitchen sink, and an AC or furnace condensate line look like six unrelated appliances, but most of the leaks Prime cleans up from them trace back to the same two parts: a flexible supply line or hose, and a shutoff valve that either failed or that nobody used before the problem started. Oatey, a plumbing supply manufacturer, publishes guidance that a washing machine supply hose has a typical service life of roughly five to eight years before the rubber degrades enough to fail, and the same aging pattern shows up in the fittings behind a refrigerator, under a dishwasher, and under a sink. The appliance itself is rarely the point of failure. The line feeding it is.

EPA's WaterSense program publishes a guide to leak detection and flow monitoring devices that names two of these exact appliances in its own catastrophic-leak examples: it lists a failed water heater and a washing machine hose failure as the kind of event an automatic shut-off valve is built to stop, and it recommends placing a point-of-use moisture sensor "behind a clothes washer or near a water heater" specifically because those are hard-to-see, leak-prone spots. The same guide reports, citing one device maker's own data, that 60 percent of homeowners who installed an in-line flow monitoring device with shutoff capability discovered a leak they did not already know was there. It separately notes that from 2019 to 2023, 1.5 percent of homeowners filed an insurance claim for water damage or freezing, averaging $15,400 per claim, a figure the guide itself uses to argue that a sensor or shutoff valve is cheap against the cost of one appliance leak that goes undetected.

On site

What this looks like in a Macomb or Oakland County home

Close-up of a corroded braided supply line fitting under a sink spraying water — A corroded braided supply line is the most common point of failure under a kitchen sink.Illustrative photo

Close-up of a clogged condensate drain line dripping water onto a basement floor — A clogged condensate line backs up and drips until the pan overflows onto the floor.Illustrative photo

Commercial dehumidifiers running inside plastic containment over a covered floor — Commercial dehumidifiers inside containment pull water out of the air while the room dries.

Available nowCall now: (586) 277-1069On site in 25 minutes typically · Macomb & Oakland County · 24/7

Common questions

Frequently asked questions

Which appliance is most likely to flood my house?

A washing machine supply hose failure is the fastest and highest-volume of the six, because the hose runs at full house water pressure every time the machine fills. A water heater is the slowest to show itself, because it usually weeps from the bottom seam for weeks rather than bursting outright. Which one actually caused a specific flood depends on where the water is found first.

How do I know if my appliance leak was sudden or gradual?

A sudden leak usually means a wet floor, a running sound, or a puddle that appeared within an hour, typically from a burst or cracked supply line. A gradual leak shows up as a stain, a swollen cabinet floor, warped flooring, or a musty smell that built up over days or weeks, usually from a slow drip at a fitting, gasket, or tank seam. Write down which one you actually saw; it affects how the claim is reviewed.

Does homeowners insurance cover a washing machine hose that burst?

A homeowners policy commonly covers sudden and accidental water damage, which is the category most burst supply hoses fall into. The carrier decides based on the policy in force and the facts of the loss.

Does homeowners insurance cover a water heater that leaked slowly for weeks?

It depends on the policy and the facts, and it is reviewed differently than a sudden burst. Michigan DIFS publishes general guidance distinguishing sudden, accidental water damage from gradual damage that develops over time, and a carrier can treat a slow weeping tank differently than a sudden failure even though both are water heater leaks. The carrier decides.

What is a leak sensor, and where should it go?

A point-of-use leak sensor is a small device with electrodes that detects water by conductivity when it gets wet, and it sends an alert when that happens. EPA's WaterSense program specifically recommends placing one behind a clothes washer or near a water heater, because both are hard-to-see, leak-prone spots. A sensor only catches a leak at the fixture where it is placed.

What does an automatic shutoff valve actually do?

An automatic shutoff valve sits on a water line and closes on its own when it detects a leak signal, such as continuous flow for too long or an abnormal flow pattern, instead of only sending an alert. EPA's WaterSense guide names a failed water heater and a washing machine hose failure as examples of the kind of catastrophic leak this type of valve is built to stop before it floods a large area.

How often should I replace my appliance supply hoses?

Oatey, a plumbing supply manufacturer, publishes guidance that a rubber washing machine supply hose has a typical service life of roughly five to eight years before the rubber can crack or bulge. The same aging risk applies to the flexible lines behind a refrigerator, under a dishwasher, and under a sink, even though no single published schedule covers all of them.

Can Prime repair or replace the leaking appliance, hose, or valve?

Prime documents the leak, removes and dries what the water damaged, and rebuilds what cannot be cleaned.

What should I do first when I find water under any appliance?

Shut off the water at the appliance's own shutoff valve, or at the main if you cannot find it. Cut power at the breaker if water has already reached an outlet or cord; do not reach into standing water to unplug something. Stop running the appliance, photograph the leak before anything moves, and call Prime to document the source and the spread.

Is appliance leak cleanup different from a regular water damage cleanup?

The cleanup itself follows the same drying and moisture-mapping process as any clean-water loss. What differs is the source investigation: documenting which appliance, which part, and whether the leak was sudden or gradual, because that record is what a carrier reviews when deciding the claim.

Cities we serve

Sources

Available nowCall now: (586) 277-1069Written estimate on site, free of charge · (586) 277-1069

Published by Prime Restoration, Sterling Heights, MI. Updated October 27, 2026.

APPLIANCE LEAK

Appliance Leak Water Damage: Which Appliance, and What Now

Call (586) 277-1069 Text us instead

We answer in under 30 seconds. 24/7, every day of the year.

5.0★ on Google, 175 reviews
Michigan Licensed Builder #262500492
IICRC Certified Firm
24/7 dispatch, Macomb & Oakland County

Do this now

6 steps to take in the first hour

Step1
Shut the water off at the appliance
Find the shutoff valve at the wall behind or under the appliance and turn it off. The main shutoff for the house works too if you cannot find it fast.
Step2
Cut power if water reached an outlet or cord
Unplug the appliance only if the cord and outlet are dry. If water is already touching an outlet or cord, shut off power at the breaker instead of reaching into the water.
Step3
Stop running the appliance and anything near it
Do not run another cycle to "see if it still leaks." Every cycle adds more water to a floor or cabinet that is already wet.
Step4
Photograph it before anything moves
Take dated photos of the water, the appliance, and the fitting or hose you think failed, before you pull the appliance out or mop anything up.
Step5
Note how long you think it was leaking
A puddle that appeared in an hour and a stain that has been there for weeks point to different causes and different claims. Write down what you actually saw.
Step6
Call Prime, not your agent, first
Prime documents the source and the spread with moisture readings before any cleanup starts. Call your carrier after the scope is written, not before.

What do I do when an appliance leaks, and does insurance cover it?

Compare

Which appliance is actually leaking?

Where six common appliance leaks start, how long they typically hide, and what they damage first
Appliance	Where it leaks	How long it hides	What it damages first
Washing machine	The rubber supply hose behind the machine, or the drain hose at the standpipe	A burst supply hose shows in minutes; a worn door seal or loose drain hose can drip for weeks	The laundry room subfloor, then the ceiling in the room below
Dishwasher	The door gasket, the supply line fitting, or the base pan under the unit	Weeks to months, because the leak sits under the toe-kick where nobody looks	The cabinet base and the subfloor under the dishwasher
Refrigerator	The icemaker water line fitting behind or under the unit	Weeks, since the fridge sits flush against a wall and water runs along the floor out of sight	The kitchen flooring at the base of the refrigerator, then the subfloor
Water heater	A tank weeping from the bottom seam as it ages, not usually a sudden burst	Weeks, because a weeping tank keeps firing and drips continuously in a room few people check daily	The basement flooring and anything stored on the floor near the tank
Sink	The flexible supply line or the P-trap under the sink	Days to weeks, until the cabinet floor swells enough to notice	The cabinet floor under the sink, then the floor of the room below
AC or furnace condensate line	A clogged condensate drain line or a failed condensate pump near the air handler	Days to weeks, because it drips into a ceiling or floor cavity before any stain shows	The ceiling below an attic air handler, or the floor around a basement furnace

The pattern

What do all six of these leaks have in common?

A flexible rubber or braided supply line, not the appliance housing, is where most of these leaks start.
A dedicated shutoff valve exists for nearly every one of these fixtures; most people have never located or turned it.
Rubber hoses age out over roughly five to eight years; braided stainless steel hoses resist the same bulging and cracking failure.

Before it happens

Can a sensor or a shutoff valve catch this before it floods?

Point-of-use sensors: placed at one fixture (behind a washer, near a water heater, under a sink); alert only, in most models.
In-line flow monitors: placed on the main or a branch line; some add an automatic shut-off valve that closes on its own.
A sensor or shutoff valve is a prevention device. It does not repair, replace, or install the supply line, valve, or appliance itself.

We clean up and dry out what a leak already damaged, whether or not a device caught it first.

The claim

Does insurance cover an appliance leak?

What nobody else publishes

Why six different appliances fail the same two ways, and what catches it before the floor does

On site

What this looks like in a Macomb or Oakland County home

Available nowCall now: (586) 277-1069On site in 25 minutes typically · Macomb & Oakland County · 24/7

Common questions

Frequently asked questions

Which appliance is most likely to flood my house?

How do I know if my appliance leak was sudden or gradual?

Does homeowners insurance cover a washing machine hose that burst?

Does homeowners insurance cover a water heater that leaked slowly for weeks?

What is a leak sensor, and where should it go?

What does an automatic shutoff valve actually do?

How often should I replace my appliance supply hoses?

Can Prime repair or replace the leaking appliance, hose, or valve?

Prime documents the leak, removes and dries what the water damaged, and rebuilds what cannot be cleaned.

What should I do first when I find water under any appliance?

Is appliance leak cleanup different from a regular water damage cleanup?

Cities we serve

Sources

Available nowCall now: (586) 277-1069Written estimate on site, free of charge · (586) 277-1069

Published by Prime Restoration, Sterling Heights, MI. Updated October 27, 2026.

Water Damage Restoration

Appliance Leak Water Damage: Which Appliance, and What Now

6 steps to take in the first hour

Shut the water off at the appliance

Cut power if water reached an outlet or cord

Stop running the appliance and anything near it

Photograph it before anything moves

Note how long you think it was leaking

Call Prime, not your agent, first

What do I do when an appliance leaks, and does insurance cover it?

Which appliance is actually leaking?

What do all six of these leaks have in common?

Can a sensor or a shutoff valve catch this before it floods?

Does insurance cover an appliance leak?

Why six different appliances fail the same two ways, and what catches it before the floor does

What this looks like in a Macomb or Oakland County home

Frequently asked questions

Related water damage topics

Cities we serve

Water Damage Restoration

Appliance Leak Water Damage: Which Appliance, and What Now

6 steps to take in the first hour

Shut the water off at the appliance

Cut power if water reached an outlet or cord

Stop running the appliance and anything near it

Photograph it before anything moves

Note how long you think it was leaking

Call Prime, not your agent, first

What do I do when an appliance leaks, and does insurance cover it?

Which appliance is actually leaking?

What do all six of these leaks have in common?

Can a sensor or a shutoff valve catch this before it floods?

Does insurance cover an appliance leak?

Why six different appliances fail the same two ways, and what catches it before the floor does

What this looks like in a Macomb or Oakland County home

Frequently asked questions

Related water damage topics

Cities we serve