Clearing a frozen defrost drain is a warm-water job, not a chipping job: unplug the fridge, find the drain opening, and flush it slowly with a turkey baster until water runs freely to the drain pan. Water pooling under the crisper drawers, a sheet of ice on the freezer floor, or water running down the back wall are the usual signs it's blocked.
Time: about 45 minutes (longer if the ice is thick) · Difficulty: Moderate · You'll need: a turkey baster, a container of warm (not boiling) tap water, towels, coolers for food, a flashlight
Before you start
- •Unplug the fridge or switch off its breaker before working inside.
- •Move food into coolers with ice packs.
- •Use warm tap water, never boiling water, and never chip ice with knives, screwdrivers or ice picks. A punctured line in the freezer ruins the sealed system.
- •If reaching the drain means removing an inside panel that has wiring or a fan behind it, stop there and call a technician.
Steps
Step 1 — Find the drain
On many top-freezer models the drain is a small hole or trough at the back of the freezer floor. On many side-by-side and bottom-freezer models it sits low in the freezer behind the rear panel, and some models with a separate fresh-food cooling system also have a drain trough at the back of the fresh-food section. Your manual or a careful look with a flashlight will show it; if it's hidden behind a panel, see the safety note above.
Step 2 — Remove ice around the opening
Lay towels down and lift away any loose ice sheets by hand. Leave stubborn ice to melt rather than prying.
Step 3 — Flush with warm water
Fill the turkey baster with warm water and squeeze it slowly into the drain. Repeat, pausing to let it work, until water runs down instead of backing up.
Step 4 — Clear any debris
If you feel a soft blockage, a pipe cleaner or a length of flexible plastic tubing can push it through gently. Don't force anything rigid down the line.
Step 5 — Check the drain pan
The drain empties into a pan underneath the fridge, often behind the toe grille. Make sure it isn't overflowing, and wipe it out if you can reach it.
Step 6 — Dry out and restart
Dry the compartment, plug the fridge back in and return the food once it's cold again.
Didn't fix it?
If the drain freezes again within days or weeks, the drain itself usually isn't the root problem. Repeat freezing tends to point to the defrost system, such as a heater, sensor or control, or a missing drain strap or heater clip. If the frost on the back panel is thick enough to block airflow, see how to manually defrost a freezer for the safe way to thaw it. Then book refrigerator repair so the defrost system can be tested.
How often to do this
This is a fix, not routine upkeep. If you need it more than once, call for service rather than repeating it.
From Kevin: I often find that the drain was flushed weeks earlier and froze right back up. When it comes back, the fix is in the defrost circuit, not the drain hole.
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