The Most Common Causes
Ranked by how often we see each one. The diagnostic that actually matters isn’t a guess from a list — it’s a tech listening to your machine, looking at the install, and checking the right things in the right order. But it’s useful to know what’s on the menu.
Clogged Defrost Drain
Water shows up: pooling inside the fridge, usually at the bottom of the produce drawers. Modern fridges run a defrost cycle a few times a day; the meltwater runs down a small drain channel into a pan under the unit, where it evaporates. When the drain channel clogs with food debris, the water has nowhere to go — so it backs up into the fridge interior.
Ice-Maker Water Line
Water shows up: on the floor, often suddenly worse over a few days. The plastic supply line that runs from the wall valve to the ice-maker behind the fridge can crack, loosen at fittings, or freeze and split in cold conditions. Edmonton garage and basement fridges are especially at risk in winter.
Damaged Water Filter or Housing
Water shows up: in front of the fridge, often shortly after a filter change. The water filter and its housing can crack — sometimes from over-tightening on installation, sometimes from age. A slow drip can become a kitchen puddle by morning.
Frozen or Cracked Evaporator Drain Pan
Water shows up: both inside (defrost water backing up) and on the floor (overflow from the pan). The plastic drain pan under the fridge can crack from age. Once it cracks, defrost water doesn’t evaporate harmlessly anymore — it dribbles out onto the floor.
Door Seal Failure
Water shows up: wet spots inside the fridge near the door edges; sometimes condensation on the outer cabinet. A torn or compressed door gasket lets humid kitchen air in. The air condenses on cold interior surfaces. Not usually a flood — accumulates over time.
Cracked Water Reservoir or Internal Line
Water shows up: variable — usually inside the freezer or fridge near the back. The internal water reservoir that supplies the dispenser is plastic and can crack. Internal lines can split from accidental freezing. Less common, but it happens.
Before You Call
A handful of things worth checking before you book — narrows the cause and can sometimes resolve the smaller issues entirely:
- Where exactly is the water? Inside the fridge interior? On the floor in front? Behind the unit? Flashlight on, look carefully. Location is half the diagnosis.
- Pull the unit forward and look at the ice-maker line. Plastic line, often white or clear, running into the wall. Look for kinks, frost, drips, or water stains. If you see any, shut off the water valve at the wall.
- Was the water filter changed recently? If yes, take it out and re-seat it carefully (not over-tight). Many “fridge leak” calls within a week of a filter change are the filter housing.
- If water is inside the fridge: empty the bottom drawers and look for the defrost drain hole at the back wall of the fridge interior. A turkey baster of warm water poured into it often clears a clogged drain.
- Shut off the water supply if the leak is bad. The valve is usually on the wall behind the fridge. Cuts off the bleeding while you wait for the call.
Why a Real Diagnosis Matters
Fridge leak diagnosis goes faster when the tech knows where the water has been showing up — interior leaks point to defrost or door seal, exterior leaks point to water line or filter. Skipping that step costs half an hour on every visit. Most fridge leak calls resolve in a single visit when the diagnosis is set up properly.
The 15-Minute Difference
- Distinguishes defrost-drain from water-line. Both can produce floor water, but defrost is cheap to fix and water-line is a plumbing-style repair. The fix is completely different.
- Catches the ice-line risk. A cracked ice-maker line in an Edmonton garage fridge is a flood waiting to happen. We say “shut this off” before it gets worse.
- Checks both inside and behind. Some leaks come from two places at once — a clogged drain plus a worn gasket. A real diagnosis includes both.
- Says when the fridge isn’t worth a leak repair. Older fridges with multiple leak points sometimes aren’t worth pursuing. We say so without billing for the bad-news diagnosis.
What the Repair Typically Costs
Kodiak quotes labour as a flat rate per repair type, after diagnosis but before any work begins. Parts are quoted separately on your invoice. Typical labour ranges:
Fridge Leak Repairs
Standard repair (parts replacement or labour-only): Most fridge leak fixes — defrost drain clearing, water filter / housing replacement, ice-maker water-line replacement, door gasket swap — fall in the $220–350 range for labour. Parts are quoted separately when needed.
Internal-line repairs: A cracked water reservoir or internal supply line is heavier labour — the back panel has to come off. Quoted on-site.
Service-call fee: $119, applied toward the repair if you proceed.
Your firm quote comes from your tech after diagnosis, before any work begins. You approve before we touch anything. Full pricing details.
Related Reading
- Appliance Maintenance Guide — The annual defrost-drain clear that prevents this leak in the first place.
- Is It Worth Repairing Your Appliance? — Repair-vs-replace math, especially relevant for older leaking fridges.
- Find Your Appliance Model Number — The first thing the tech asks for when sourcing a filter housing or door gasket.
Ready When You Are
If the leak is from the ice-maker line, shut off the wall valve right now — it buys time. Kodiak launches in Edmonton October 2026; join the waitlist for day-one priority.