Pulling out the crisper drawer and finding a puddle is one of the most common calls we take. A refrigerator leaking water inside is a call we take every week, and the cause is nearly always a clogged or frozen defrost drain, the small channel that carries meltwater from the evaporator coil down to a pan by the compressor. Water on the kitchen floor in front of or behind the fridge points somewhere else: a cracked drain pan, a weeping water line to the ice maker, a tired door gasket or a fridge that is no longer level.
This guide walks through each source in the order we check them on a service call, starting with a fix you can do in twenty minutes with a turkey baster and warm water. It covers freezer-on-top, bottom-freezer and French-door models, and it says plainly when the job belongs to a technician.
Table of Contents
Inside or on the floor? A quick decision tree
Before you pull anything apart, notice exactly where the water is. That one observation does most of the diagnosis for you.
- Water pooled under the crisper drawers or on the bottom shelf of the fresh-food section: a clogged or frozen defrost drain, almost every time.
- A sheet of ice on the freezer floor, with water dripping into the fridge below: the same defrost drain, just further along.
- Water at the front of the fridge, around the doors: condensation from a weak door gasket, or the cabinet tilting forward so meltwater runs the wrong way.
- Water behind or under the fridge: the drain pan, the water line or the inlet valve on models with an ice maker or dispenser.
- Water only after a power outage or a long grocery unload: normal thaw. If it stops on its own, it is not a fault.
The rest of this guide takes those causes in the order we see them. If you are not sure which bucket you are in, start with the defrost drain anyway. It is the cheapest check and the most likely answer. Most refrigerator leaking water inside calls end at the first cause.
The clogged defrost drain (the usual culprit)
Every frost-free fridge runs a defrost cycle a few times a day. A heater warms the evaporator coil, the frost melts, and the water runs into a trough and down a narrow drain tube to a pan on top of the compressor, where the warmth evaporates it. If that tube plugs with food debris or freezes shut, water backs up and finds its own way out, usually under the crisper drawers.
On freezer-on-top and side-by-side models you often see the ice sheet on the freezer floor first. On bottom-freezer and French-door fridges the evaporator sits behind the rear panel of the freezer, so the leak shows up as a frozen puddle under the freezer basket or as water on the floor of the fresh-food section above it. That ice sheet is the signature of a refrigerator leaking water inside from the defrost drain.
How to clear it yourself
- Unplug the fridge and move anything perishable to a cooler.
- Remove the crisper drawers, then the rear panel inside the freezer. It is usually held by four to six screws, and the drain hole sits in a trough below the coil.
- Chip away ice with your fingers or a plastic scraper. Never use a knife, a screwdriver or a heat gun near the coil. A punctured evaporator turns a twenty-minute job into a sealed-system repair.
- Flush the drain with warm water from a turkey baster. Then work a length of stiff plastic tubing, a pipe cleaner or a piece of trimmer line down the hole to push the clog through.
- Pour a cup of warm water down and listen for it dripping into the pan underneath. If you hear it, reassemble and plug back in.
Many fridges have a small metal clip or heat strap that sits in the drain hole and carries warmth from the defrost heater so the hole cannot ice over. If that strap is missing or bent away from the heater, the drain will keep freezing no matter how often you clear it. Samsung French-door fridges are the model we see this on most, and our Samsung refrigerator repair techs fit the updated drain clip regularly. Your manufacturer’s support site, such as Samsung Canada support, will show the drain location for your model. A missing or corroded drain clip is why a refrigerator leaking water inside often comes back a month after the drain is cleared.
Water on the floor: drain pan, water line and inlet valve
If the inside is dry but there is a puddle on the kitchen floor, the water is coming from the back of the fridge. Pull it out carefully, with a second person if it is a full-size French-door, and take the lower rear cover off.
Drain pan
The drain pan is a shallow plastic tray that sits on top of the compressor. It rarely leaks unless it cracked or was knocked off its bracket during a move. A pan that is full to the brim and never evaporates tells you the condenser fan is not running, and that is a bigger problem, because the same fan keeps the compressor from overheating.
Water line and inlet valve
Fridges with an ice maker or dispenser have a quarter-inch line running from a shutoff valve under the sink or in the basement. Check the compression fitting at that valve, the fitting where the line meets the inlet valve on the back of the fridge, and the line itself for a pinhole. Plastic lines get brittle after about ten years, and braided stainless replacements are inexpensive. The inlet valve can also crack at its plastic body and weep slowly, which you first notice as a stain on the floor or a warped kick plate.
Ice maker fill tube
If water is spraying or dripping inside the freezer rather than the fridge, the fill tube behind the ice maker may be frozen so water backs up and drips down over the ice bin. Thaw it, then check the water pressure and the inlet valve, because a valve that does not close crisply is what freezes the tube in the first place. A frozen fill tube is the one refrigerator leaking water inside fault that shows up in the freezer rather than the fridge.
Door gasket and condensation
A gasket that is torn, hardened or not sealing lets warm, humid air in. In a July kitchen in London that air carries a lot of moisture, and it condenses on the cold liner, runs down and collects at the bottom of the door or drips onto the floor in front of the fridge. Do the paper test: close the door on a strip of paper at several points around the frame. If it slides out with no resistance anywhere, the seal is weak at that spot.
Wash the gasket with warm soapy water and check for crumbs stuck in the folds. A gasket that has pulled out of its channel can often be pressed back in. A torn or shrunken one gets replaced, which is a quick job for us and not an expensive one. Location matters too: a fridge in a damp basement or an unheated garage will sweat far more than one in a dry kitchen, and a small dehumidifier nearby sometimes solves the whole complaint. Condensation from a bad gasket looks like a refrigerator leaking water inside, but the fix is on the door.
Is your fridge level?
Fridges are designed to sit slightly higher at the front, roughly a quarter of a bubble on a level, so the doors swing shut on their own and defrost water runs back toward the drain rather than forward. If the front feet are screwed all the way in, or the floor has settled, meltwater can drift toward the door and out.
Set a level on top of the cabinet front to back, then turn the front feet or roller screws clockwise to raise the front until the bubble sits just behind centre. This takes five minutes and it is the check people skip. An out-of-level fridge is the simplest cause of a refrigerator leaking water inside and takes five minutes to fix.
From the van: when a customer tells us the leak comes and goes every few days, that is the defrost timer talking. The drain only sees water during a defrost cycle, so a partial clog leaks on a schedule, not constantly. A leak that never stops is a water line.
Appliance Experts repairs refrigerators and freezers across London and Southwestern Ontario, 6 AM–9 PM, seven days a week — usually same day. The service call is free with the repair, and every job carries a 90-day parts and labour warranty.
When to call a pro
Most of what is above is fair game for a careful homeowner. These situations are not, or at least are not worth your Saturday:
- The drain clears, but the leak comes back within a few weeks. That points to a missing drain strap, a weak defrost heater or a defrost thermostat that is letting the coil ice over.
- Frost is building on the rear freezer panel and the fridge section is getting warm. The defrost system has failed and the coil is smothered.
- The condenser fan is not running or the compressor is hot to the touch.
- The inlet valve is weeping, or you cannot find where the water is entering the cabinet.
- Water is anywhere near the control board, the plug or the outlet.
Our refrigerator repair techs carry defrost heaters, thermostats, drain clips, inlet valves and gaskets for the common brands, so most leak calls are finished on the first visit. The service fee in Southwestern Ontario runs $90 to $140 and is applied to the repair if you go ahead, and most leak-related fridge repairs land in the $220 to $500 range depending on the part. If you are in Kitchener or Waterloo, our fridge repair team in Kitchener covers the same-day slots there, and you can take $35 off any completed repair with our online coupon. A refrigerator leaking water inside is usually a single-visit repair.
Frequently asked questions
Why is my refrigerator leaking water inside under the crisper drawers?
The defrost drain is clogged or frozen. Meltwater from the evaporator coil cannot reach the drain pan, so it backs up and runs down the rear wall to the lowest point in the fridge, which is the floor under the crisper drawers. Clearing the drain with warm water fixes most cases. It is the cause behind most refrigerator leaking water inside complaints on frost-free models.
How do I unclog a refrigerator defrost drain?
Unplug the fridge, remove the rear panel inside the freezer, and melt any ice around the drain hole with warm water from a turkey baster. Push a pipe cleaner or a length of stiff plastic tubing down the hole to clear the clog, then flush again until you hear water dripping into the pan below.
Why does my fridge leak water on the floor but not inside?
Water on the floor comes from behind the fridge. The usual sources are a cracked or dislodged drain pan, a leaking fitting or pinhole in the ice maker water line, or an inlet valve that is weeping. A weak door gasket can also cause condensation that drips at the front.
Can a leaking refrigerator damage my floor or cause mould?
Yes. A slow leak under a fridge can lift vinyl, stain hardwood and grow mould behind the kick plate, and it is often unnoticed for months. Fix the source rather than laying a towel down, and check under the fridge with a flashlight once you have cleared the drain.
How much does it cost to fix a refrigerator leaking water?
In Southwestern Ontario the service fee is typically $90 to $140 and is applied to the repair. A cleared drain with a new drain clip or gasket is at the low end, while a defrost heater, thermostat or inlet valve replacement usually falls in the $220 to $500 range for the complete job.
The bottom line
A refrigerator leaking water inside is almost always a blocked defrost drain, and it is one of the few fridge problems you can fix yourself with warm water and a bit of patience. Water on the floor means the drain pan, the water line, the inlet valve or a gasket, and each one has a simple check. If the leak keeps coming back, or frost is building up and the fridge is getting warm, the defrost system needs a technician. We are in the van across London, Woodstock and Kitchener from 6 AM to 9 PM every day. Call (519) 900-3010 or book online and we will find where the water is coming from.