XPARTCO WR51X10055 Refrigerator Defrost Heater
- Sku: EXPWR51X10055
- Vendor: XPARTCO
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XPARTCO WR51X10055 Refrigerator Defrost Heater
XPARTCO WR51X10055 Refrigerator Defrost Heater Assembly
The XPARTCO WR51X10055 is an aftermarket replacement refrigerator defrost heater and bracket assembly compatible with a wide range of GE, Hotpoint, Kenmore, Haier, Americana, Monogram, and Café refrigerators. The defrost heater is a glass quartz tube heater mounted on a bracket below the evaporator coils in the freezer compartment. During each automatic defrost cycle, the heater energizes and melts any frost that has accumulated on the evaporator coils — maintaining unobstructed airflow through the coils so the refrigerator can cool efficiently. When the heater fails, frost accumulates on the coils unchecked, blocking airflow and causing both the freezer and fresh food sections to gradually warm up.
Rated at 120V, 725W, this single quartz tube heater assembly measures 12-1/8" L x 3-3/8" W x 2-1/8" H and includes the heater element and mounting bracket. It directly replaces WR51X10030, AP3183311, 914088, AH303781, EA303781, PS303781, SH323, and EAP303781. Often replaced together with the defrost thermostat (WR50X10068) and temperature sensor (WR55X10025) for a complete defrost system repair. Installs in 20–30 minutes with basic hand tools.
Quick Answer
The XPARTCO WR51X10055 Refrigerator Defrost Heater Assembly fixes GE and Hotpoint refrigerators where frost is building up on the evaporator coils, the freezer is too warm, the fresh food section is warming up, or the refrigerator is running continuously without cooling properly. Single quartz tube heater, 120V / 725W. Assembly measures 12-1/8" L x 3-3/8" W x 2-1/8" H. Includes heater and bracket. Replaces WR51X10030, AP3183311, 914088, SH323, and more. Compatible with GE, Hotpoint, Kenmore, Haier, Americana, Monogram, and Café.
Common Problems This Part Fixes
- Frost or ice buildup covering the evaporator coils in the freezer compartment
- Freezer section warming up or not maintaining set temperature
- Fresh food section warming up even though the freezer is running
- Refrigerator running continuously but not cooling properly
- Visible frost accumulation on the freezer back wall behind the panel
- Defrost heater element visibly burned out, broken, or dark/charred at the ends
- Both compartments gradually warming up after working normally for years
Replaces Part Numbers
This defrost heater assembly directly replaces the following OEM and cross-reference part numbers:
WR51X10055, WR51X10030, 914088, AGE29323, AH303781, AP3183311, EA303781, EAP303781, PD00001004, PS303781.
If your part number is not listed above, contact our support team before ordering and we will verify compatibility.
Compatibility
This defrost heater is compatible with select refrigerators from the following brands:
- GE refrigerators (side-by-side, French door, top-freezer, and bottom-freezer)
- Hotpoint refrigerators
- Kenmore / Sears refrigerators (select GE-built models)
- Haier refrigerators (select GE-platform models)
- Americana refrigerators
- Monogram refrigerators
- Café refrigerators
Tip: When replacing the defrost heater, it is highly recommended to also replace the defrost thermostat (WR50X10068) and temperature sensor (WR55X10025) at the same time. These three parts form the defrost system and are commonly replaced together — replacing all three prevents a second disassembly if another component fails soon after.
Key Features
- Single quartz tube glass heater — melts frost from the evaporator coils during each automatic defrost cycle, maintaining airflow and cooling efficiency
- Rated 120V / 725W — correct electrical specifications for compatible GE refrigerators
- Assembly dimensions: 12-1/8" L x 3-3/8" W x 2-1/8" H — direct fit into the evaporator coil bracket
- Includes heater element and mounting bracket — complete assembly ready to install
- Replaces WR51X10030 and WR51X10055 — both older and current part numbers covered
- Compatible with GE, Hotpoint, Kenmore, Haier, Americana, Monogram, and Café refrigerators
- Often replaced together with WR50X10068 defrost thermostat and WR55X10025 temperature sensor
- Aftermarket replacement built to OEM-equivalent quality standards
- DIY repair — installs in 20–30 minutes with basic hand tools
Product Specifications
| Part Number | WR51X10055 |
| Also Replaces | WR51X10030 |
| Part Type | Refrigerator Defrost Heater and Bracket Assembly |
| Condition | Aftermarket Replacement |
| Heater Type | Single quartz tube glass heater |
| Voltage | 120V AC |
| Wattage | 725W |
| Dimensions | 12-1/8" L x 3-3/8" W x 2-1/8" H |
| Includes | Heater element and mounting bracket |
| Often Replaced With | WR50X10068 Defrost Thermostat, WR55X10025 Temperature Sensor |
| Compatible Brands | GE, Hotpoint, Kenmore, Haier, Americana, Monogram, Café |
Installation Notes
Frequently Asked Questions
What does the refrigerator defrost heater do?
Modern refrigerators use an automatic defrost system that periodically runs a defrost cycle — typically once or twice a day — to melt frost that accumulates on the evaporator coils during normal operation. The defrost heater is a glass quartz heating element that energizes during this cycle and melts the frost off the coils. This keeps the coils clear so air can flow freely through them to cool the refrigerator. When the heater fails, frost builds up unchecked on the coils over days or weeks — eventually blocking airflow completely and causing both compartments to warm up, even though the compressor is still running.
How do I know if my defrost heater has failed?
Remove the freezer back panel to expose the evaporator coils. If the coils are heavily coated in frost or solid ice — especially if both the freezer and refrigerator sections have been warming up — a failed defrost heater is the most likely cause. You can confirm with a multimeter: disconnect the heater and probe both wire ends. A working heater shows continuity (resistance between approximately 10–200 ohms at room temperature depending on wattage). No continuity confirms the heater element has burned out. Also visually inspect the glass tube — a burned, blackened, or broken tube is a clear sign of failure.
Should I also replace the defrost thermostat and temperature sensor?
Yes — since the freezer must be fully emptied and the back panel removed to replace the heater, it is highly recommended to also replace the defrost thermostat (WR50X10068) and temperature sensor (WR55X10025) at the same time. All three components form the defrost system and wear at similar rates. A failed thermostat or sensor can cause the heater to run too long or not at all — replacing all three in a single repair eliminates that risk and saves you from another complete freezer teardown in the near future.
My freezer is warming up but the compressor is running — is it the defrost heater?
It often is — but not always. A compressor that is running but not cooling can be caused by a failed defrost heater (frost blocking airflow), a faulty evaporator fan motor (air not circulating), a defrost thermostat or timer failure, or a sealed system problem (refrigerant leak or compressor issue). The easiest way to distinguish a defrost system failure from other causes is to open the freezer and check whether frost has built up on the back panel or coils. If yes, the defrost heater is the most likely culprit. If the coils are clear and the compressor is running, look at the evaporator fan or sealed system next.
Is this an OEM or aftermarket part?
This is an aftermarket replacement part built to OEM-equivalent quality standards. It is not a genuine GE OEM part, but is manufactured as a single quartz tube glass heater rated at 120V/725W to match the dimensions and performance of the original WR51X10055 defrost heater assembly.
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Model Compatibility
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