How do I know if my defrost heater is bad?

Common signs of a failing defrost heater include excessive ice buildup on the freezer's evaporator coils, the refrigerator not cooling adequately, or water pooling under the appliance. You can test the heater's continuity with a multimeter; a lack of continuity indicates a break in the heating element.

What causes a defrost heater to fail?

Defrost heaters can fail due to age, constant exposure to temperature changes, or electrical issues. The heating element can burn out or develop a break in its circuit, preventing it from melting ice. Over time, components naturally degrade, leading to eventual failure.

Can I replace a defrost heater myself?

Yes, replacing a defrost heater is a common DIY repair for those with basic tool knowledge. It typically involves disassembling the freezer compartment, disconnecting the old heater, and installing the new one. Always ensure the refrigerator is unplugged before starting any repair work for safety.

Refrigerator Defrost Heater Replacement Guide

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🏆 RECOMMENDED PART

Whirlpool W11567493 Genuine OEM Refrigerator Defrost Heater Element Replacement Part - Replaces W11355319

GENUINE OEM: Whirlpool Genuine OEM Parts are designed specifically for your appliance, meet Whirlpool engineering standards, and are crafted to ensure the quality of your appliance
REPLACEMENT PART NUMBERS: W11567493 Refrigerator Defrost Heater Element replaces the part numbers W11355319
COMPATIBLE APPLIANCES: W11567493 is compatible with select Whirlpool refrigerators
Whirlpool offers the well-tested, high quality parts that your appliances deserve with a one-year warranty
KEEP YOUR HOME HUMMING: For over 100 years, Whirlpool has cared for your appliance as you care for your home, which is why our replacement parts are made using durable materials and innovative processes

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What the W11567493 does

The defrost heater melts frost and ice that accumulates on the evaporator coils during the cooling cycle. This process prevents excessive ice buildup, ensuring proper airflow and cooling efficiency.

Symptoms when this part fails

Excessive frost buildup in freezer
Refrigerator not cooling properly
Food spoilage in fresh food compartment
Water pooling on floor near fridge
Refrigerator running constantly

Compatibility

Fits the Whirlpool family. Specifically:

Any unit originally equipped with OEM part number(s): W11355319.
Check the model/rating plate inside your appliance and compare it against the fitment table on the product listing before ordering — this guide does not list specific compatible models because Amazon does not provide verified fitment data through this pipeline.

Also replaces: W11355319

Tools you'll need

Screwdriver set
Nut driver set
Pliers
Multimeter (for testing)

Difficulty: Moderate · Time: 1-2 hours

How to install the W11567493, step by step

Unplug the refrigerator from power.
Empty the freezer compartment and remove shelves.
Remove the rear freezer panel to access evaporator coils.
Disconnect wiring and mounting clips for old heater.
Install new defrost heater, securing wiring and clips.
Reassemble freezer panels and shelves.
Plug in refrigerator and test for proper operation.

Related troubleshooting

If swapping this part doesn't fix the issue, check these next: